Amazon Linux AMI update for kernel



| Updated: 2024-10-25
Risk Low
Patch available YES
Number of vulnerabilities 9
CVE-ID CVE-2023-1032
CVE-2023-1076
CVE-2023-1077
CVE-2023-1118
CVE-2023-1829
CVE-2023-1998
CVE-2023-2985
CVE-2023-45863
CVE-2023-7192
CWE-ID CWE-415
CWE-843
CWE-416
CWE-254
CWE-787
CWE-401
Exploitation vector Local
Public exploit Public exploit code for vulnerability #5 is available.
Public exploit code for vulnerability #6 is available.
Vulnerable software
 Amazon Linux AMI
Operating systems & Components / Operating system

kernel
Operating systems & Components / Operating system package or component

Vendor Amazon Web Services

Security Bulletin

This security bulletin contains information about 9 vulnerabilities.

1) Double Free

EUVDB-ID: #VU73267

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-1032

CWE-ID: CWE-415 - Double Free

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error when handling the IORING_OP_SOCKET operation with io_uring in Linux kernel. A local user can trigger a double free error and crash the kernel.

Mitigation

Update the affected packages:

aarch64:
    kernel-libbpf-6.1.19-30.43.amzn2023.aarch64
    bpftool-6.1.19-30.43.amzn2023.aarch64
    kernel-libbpf-static-6.1.19-30.43.amzn2023.aarch64
    python3-perf-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-6.1.19-30.43.amzn2023.aarch64
    kernel-libbpf-devel-6.1.19-30.43.amzn2023.aarch64
    perf-debuginfo-6.1.19-30.43.amzn2023.aarch64
    python3-perf-6.1.19-30.43.amzn2023.aarch64
    kernel-headers-6.1.19-30.43.amzn2023.aarch64
    kernel-livepatch-6.1.19-30.43-1.0-0.amzn2023.aarch64
    bpftool-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-devel-6.1.19-30.43.amzn2023.aarch64
    perf-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-6.1.19-30.43.amzn2023.aarch64
    kernel-debuginfo-common-aarch64-6.1.19-30.43.amzn2023.aarch64
    kernel-devel-6.1.19-30.43.amzn2023.aarch64

src:
    kernel-6.1.19-30.43.amzn2023.src

x86_64:
    kernel-tools-devel-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-devel-6.1.19-30.43.amzn2023.x86_64
    bpftool-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-livepatch-6.1.19-30.43-1.0-0.amzn2023.x86_64
    python3-perf-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-headers-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-static-6.1.19-30.43.amzn2023.x86_64
    bpftool-6.1.19-30.43.amzn2023.x86_64
    perf-6.1.19-30.43.amzn2023.x86_64
    python3-perf-6.1.19-30.43.amzn2023.x86_64
    kernel-tools-debuginfo-6.1.19-30.43.amzn2023.x86_64
    perf-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-tools-6.1.19-30.43.amzn2023.x86_64
    kernel-6.1.19-30.43.amzn2023.x86_64
    kernel-debuginfo-common-x86_64-6.1.19-30.43.amzn2023.x86_64
    kernel-devel-6.1.19-30.43.amzn2023.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: before 6.1.19-30.43

CPE2.3 External links

http://alas.aws.amazon.com/AL2023/ALAS-2023-138.html


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Type Confusion

EUVDB-ID: #VU72742

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-1076

CWE-ID: CWE-843 - Type confusion

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a type confusion error during initialization of TUN/TAP sockets. A local user can trigger a type confusion error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected packages:

aarch64:
    kernel-libbpf-6.1.19-30.43.amzn2023.aarch64
    bpftool-6.1.19-30.43.amzn2023.aarch64
    kernel-libbpf-static-6.1.19-30.43.amzn2023.aarch64
    python3-perf-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-6.1.19-30.43.amzn2023.aarch64
    kernel-libbpf-devel-6.1.19-30.43.amzn2023.aarch64
    perf-debuginfo-6.1.19-30.43.amzn2023.aarch64
    python3-perf-6.1.19-30.43.amzn2023.aarch64
    kernel-headers-6.1.19-30.43.amzn2023.aarch64
    kernel-livepatch-6.1.19-30.43-1.0-0.amzn2023.aarch64
    bpftool-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-devel-6.1.19-30.43.amzn2023.aarch64
    perf-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-6.1.19-30.43.amzn2023.aarch64
    kernel-debuginfo-common-aarch64-6.1.19-30.43.amzn2023.aarch64
    kernel-devel-6.1.19-30.43.amzn2023.aarch64

src:
    kernel-6.1.19-30.43.amzn2023.src

x86_64:
    kernel-tools-devel-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-devel-6.1.19-30.43.amzn2023.x86_64
    bpftool-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-livepatch-6.1.19-30.43-1.0-0.amzn2023.x86_64
    python3-perf-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-headers-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-static-6.1.19-30.43.amzn2023.x86_64
    bpftool-6.1.19-30.43.amzn2023.x86_64
    perf-6.1.19-30.43.amzn2023.x86_64
    python3-perf-6.1.19-30.43.amzn2023.x86_64
    kernel-tools-debuginfo-6.1.19-30.43.amzn2023.x86_64
    perf-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-tools-6.1.19-30.43.amzn2023.x86_64
    kernel-6.1.19-30.43.amzn2023.x86_64
    kernel-debuginfo-common-x86_64-6.1.19-30.43.amzn2023.x86_64
    kernel-devel-6.1.19-30.43.amzn2023.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: before 6.1.19-30.43

CPE2.3 External links

http://alas.aws.amazon.com/AL2023/ALAS-2023-138.html


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Type Confusion

EUVDB-ID: #VU72699

Risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-1077

CWE-ID: CWE-843 - Type confusion

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a type confusion error within the pick_next_rt_entity() function pick_next_rt_entity(). A local user can trigger a type confusion error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected packages:

aarch64:
    kernel-libbpf-6.1.19-30.43.amzn2023.aarch64
    bpftool-6.1.19-30.43.amzn2023.aarch64
    kernel-libbpf-static-6.1.19-30.43.amzn2023.aarch64
    python3-perf-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-6.1.19-30.43.amzn2023.aarch64
    kernel-libbpf-devel-6.1.19-30.43.amzn2023.aarch64
    perf-debuginfo-6.1.19-30.43.amzn2023.aarch64
    python3-perf-6.1.19-30.43.amzn2023.aarch64
    kernel-headers-6.1.19-30.43.amzn2023.aarch64
    kernel-livepatch-6.1.19-30.43-1.0-0.amzn2023.aarch64
    bpftool-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-devel-6.1.19-30.43.amzn2023.aarch64
    perf-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-6.1.19-30.43.amzn2023.aarch64
    kernel-debuginfo-common-aarch64-6.1.19-30.43.amzn2023.aarch64
    kernel-devel-6.1.19-30.43.amzn2023.aarch64

src:
    kernel-6.1.19-30.43.amzn2023.src

x86_64:
    kernel-tools-devel-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-devel-6.1.19-30.43.amzn2023.x86_64
    bpftool-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-livepatch-6.1.19-30.43-1.0-0.amzn2023.x86_64
    python3-perf-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-headers-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-static-6.1.19-30.43.amzn2023.x86_64
    bpftool-6.1.19-30.43.amzn2023.x86_64
    perf-6.1.19-30.43.amzn2023.x86_64
    python3-perf-6.1.19-30.43.amzn2023.x86_64
    kernel-tools-debuginfo-6.1.19-30.43.amzn2023.x86_64
    perf-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-tools-6.1.19-30.43.amzn2023.x86_64
    kernel-6.1.19-30.43.amzn2023.x86_64
    kernel-debuginfo-common-x86_64-6.1.19-30.43.amzn2023.x86_64
    kernel-devel-6.1.19-30.43.amzn2023.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: before 6.1.19-30.43

CPE2.3 External links

http://alas.aws.amazon.com/AL2023/ALAS-2023-138.html


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Use-after-free

EUVDB-ID: #VU72734

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-1118

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error in the Linux kernel integrated infrared receiver/transceiver driver "drivers/media/rc/ene_ir.c" when detaching rc device. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.


Mitigation

Update the affected packages:

aarch64:
    kernel-libbpf-6.1.19-30.43.amzn2023.aarch64
    bpftool-6.1.19-30.43.amzn2023.aarch64
    kernel-libbpf-static-6.1.19-30.43.amzn2023.aarch64
    python3-perf-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-6.1.19-30.43.amzn2023.aarch64
    kernel-libbpf-devel-6.1.19-30.43.amzn2023.aarch64
    perf-debuginfo-6.1.19-30.43.amzn2023.aarch64
    python3-perf-6.1.19-30.43.amzn2023.aarch64
    kernel-headers-6.1.19-30.43.amzn2023.aarch64
    kernel-livepatch-6.1.19-30.43-1.0-0.amzn2023.aarch64
    bpftool-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-devel-6.1.19-30.43.amzn2023.aarch64
    perf-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-6.1.19-30.43.amzn2023.aarch64
    kernel-debuginfo-common-aarch64-6.1.19-30.43.amzn2023.aarch64
    kernel-devel-6.1.19-30.43.amzn2023.aarch64

src:
    kernel-6.1.19-30.43.amzn2023.src

x86_64:
    kernel-tools-devel-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-devel-6.1.19-30.43.amzn2023.x86_64
    bpftool-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-livepatch-6.1.19-30.43-1.0-0.amzn2023.x86_64
    python3-perf-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-headers-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-static-6.1.19-30.43.amzn2023.x86_64
    bpftool-6.1.19-30.43.amzn2023.x86_64
    perf-6.1.19-30.43.amzn2023.x86_64
    python3-perf-6.1.19-30.43.amzn2023.x86_64
    kernel-tools-debuginfo-6.1.19-30.43.amzn2023.x86_64
    perf-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-tools-6.1.19-30.43.amzn2023.x86_64
    kernel-6.1.19-30.43.amzn2023.x86_64
    kernel-debuginfo-common-x86_64-6.1.19-30.43.amzn2023.x86_64
    kernel-devel-6.1.19-30.43.amzn2023.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: before 6.1.19-30.43

CPE2.3 External links

http://alas.aws.amazon.com/AL2023/ALAS-2023-138.html


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) Use-after-free

EUVDB-ID: #VU75448

Risk: Low

CVSSv3.1: 7.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2023-1829

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the tcindex_delete() function. A local user can trigger a use-after-free error and execute arbitrary code with root privileges.

Mitigation

Update the affected packages:

aarch64:
    kernel-libbpf-6.1.19-30.43.amzn2023.aarch64
    bpftool-6.1.19-30.43.amzn2023.aarch64
    kernel-libbpf-static-6.1.19-30.43.amzn2023.aarch64
    python3-perf-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-6.1.19-30.43.amzn2023.aarch64
    kernel-libbpf-devel-6.1.19-30.43.amzn2023.aarch64
    perf-debuginfo-6.1.19-30.43.amzn2023.aarch64
    python3-perf-6.1.19-30.43.amzn2023.aarch64
    kernel-headers-6.1.19-30.43.amzn2023.aarch64
    kernel-livepatch-6.1.19-30.43-1.0-0.amzn2023.aarch64
    bpftool-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-devel-6.1.19-30.43.amzn2023.aarch64
    perf-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-6.1.19-30.43.amzn2023.aarch64
    kernel-debuginfo-common-aarch64-6.1.19-30.43.amzn2023.aarch64
    kernel-devel-6.1.19-30.43.amzn2023.aarch64

src:
    kernel-6.1.19-30.43.amzn2023.src

x86_64:
    kernel-tools-devel-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-devel-6.1.19-30.43.amzn2023.x86_64
    bpftool-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-livepatch-6.1.19-30.43-1.0-0.amzn2023.x86_64
    python3-perf-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-headers-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-static-6.1.19-30.43.amzn2023.x86_64
    bpftool-6.1.19-30.43.amzn2023.x86_64
    perf-6.1.19-30.43.amzn2023.x86_64
    python3-perf-6.1.19-30.43.amzn2023.x86_64
    kernel-tools-debuginfo-6.1.19-30.43.amzn2023.x86_64
    perf-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-tools-6.1.19-30.43.amzn2023.x86_64
    kernel-6.1.19-30.43.amzn2023.x86_64
    kernel-debuginfo-common-x86_64-6.1.19-30.43.amzn2023.x86_64
    kernel-devel-6.1.19-30.43.amzn2023.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: before 6.1.19-30.43

CPE2.3 External links

http://alas.aws.amazon.com/AL2023/ALAS-2023-138.html


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

6) Security features bypass

EUVDB-ID: #VU75454

Risk: Low

CVSSv3.1: 5.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2023-1998

CWE-ID: CWE-254 - Security Features

Exploit availability: Yes

Description

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to incorrect implementation of the Spectre v2 SMT mitigations, related to calling prctl with PR_SET_SPECULATION_CTRL. An attacker can gain unauthorized access to kernel memory from userspace.

Mitigation

Update the affected packages:

aarch64:
    kernel-libbpf-6.1.19-30.43.amzn2023.aarch64
    bpftool-6.1.19-30.43.amzn2023.aarch64
    kernel-libbpf-static-6.1.19-30.43.amzn2023.aarch64
    python3-perf-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-6.1.19-30.43.amzn2023.aarch64
    kernel-libbpf-devel-6.1.19-30.43.amzn2023.aarch64
    perf-debuginfo-6.1.19-30.43.amzn2023.aarch64
    python3-perf-6.1.19-30.43.amzn2023.aarch64
    kernel-headers-6.1.19-30.43.amzn2023.aarch64
    kernel-livepatch-6.1.19-30.43-1.0-0.amzn2023.aarch64
    bpftool-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-devel-6.1.19-30.43.amzn2023.aarch64
    perf-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-6.1.19-30.43.amzn2023.aarch64
    kernel-debuginfo-common-aarch64-6.1.19-30.43.amzn2023.aarch64
    kernel-devel-6.1.19-30.43.amzn2023.aarch64

src:
    kernel-6.1.19-30.43.amzn2023.src

x86_64:
    kernel-tools-devel-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-devel-6.1.19-30.43.amzn2023.x86_64
    bpftool-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-livepatch-6.1.19-30.43-1.0-0.amzn2023.x86_64
    python3-perf-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-headers-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-static-6.1.19-30.43.amzn2023.x86_64
    bpftool-6.1.19-30.43.amzn2023.x86_64
    perf-6.1.19-30.43.amzn2023.x86_64
    python3-perf-6.1.19-30.43.amzn2023.x86_64
    kernel-tools-debuginfo-6.1.19-30.43.amzn2023.x86_64
    perf-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-tools-6.1.19-30.43.amzn2023.x86_64
    kernel-6.1.19-30.43.amzn2023.x86_64
    kernel-debuginfo-common-x86_64-6.1.19-30.43.amzn2023.x86_64
    kernel-devel-6.1.19-30.43.amzn2023.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: before 6.1.19-30.43

CPE2.3 External links

http://alas.aws.amazon.com/AL2023/ALAS-2023-138.html


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

7) Use-after-free

EUVDB-ID: #VU77495

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-2985

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error within the hfsplus_put_super() function in fs/hfsplus/super.c. A local user can trigger a use-after-free error and crash the kernel.


Mitigation

Update the affected packages:

aarch64:
    kernel-libbpf-6.1.19-30.43.amzn2023.aarch64
    bpftool-6.1.19-30.43.amzn2023.aarch64
    kernel-libbpf-static-6.1.19-30.43.amzn2023.aarch64
    python3-perf-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-6.1.19-30.43.amzn2023.aarch64
    kernel-libbpf-devel-6.1.19-30.43.amzn2023.aarch64
    perf-debuginfo-6.1.19-30.43.amzn2023.aarch64
    python3-perf-6.1.19-30.43.amzn2023.aarch64
    kernel-headers-6.1.19-30.43.amzn2023.aarch64
    kernel-livepatch-6.1.19-30.43-1.0-0.amzn2023.aarch64
    bpftool-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-devel-6.1.19-30.43.amzn2023.aarch64
    perf-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-6.1.19-30.43.amzn2023.aarch64
    kernel-debuginfo-common-aarch64-6.1.19-30.43.amzn2023.aarch64
    kernel-devel-6.1.19-30.43.amzn2023.aarch64

src:
    kernel-6.1.19-30.43.amzn2023.src

x86_64:
    kernel-tools-devel-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-devel-6.1.19-30.43.amzn2023.x86_64
    bpftool-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-livepatch-6.1.19-30.43-1.0-0.amzn2023.x86_64
    python3-perf-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-headers-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-static-6.1.19-30.43.amzn2023.x86_64
    bpftool-6.1.19-30.43.amzn2023.x86_64
    perf-6.1.19-30.43.amzn2023.x86_64
    python3-perf-6.1.19-30.43.amzn2023.x86_64
    kernel-tools-debuginfo-6.1.19-30.43.amzn2023.x86_64
    perf-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-tools-6.1.19-30.43.amzn2023.x86_64
    kernel-6.1.19-30.43.amzn2023.x86_64
    kernel-debuginfo-common-x86_64-6.1.19-30.43.amzn2023.x86_64
    kernel-devel-6.1.19-30.43.amzn2023.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: before 6.1.19-30.43

CPE2.3 External links

http://alas.aws.amazon.com/AL2023/ALAS-2023-138.html


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

8) Out-of-bounds write

EUVDB-ID: #VU84354

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-45863

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error within the fill_kobj_path() function in lib/kobject.c. A local user can can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Mitigation

Update the affected packages:

aarch64:
    kernel-libbpf-6.1.19-30.43.amzn2023.aarch64
    bpftool-6.1.19-30.43.amzn2023.aarch64
    kernel-libbpf-static-6.1.19-30.43.amzn2023.aarch64
    python3-perf-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-6.1.19-30.43.amzn2023.aarch64
    kernel-libbpf-devel-6.1.19-30.43.amzn2023.aarch64
    perf-debuginfo-6.1.19-30.43.amzn2023.aarch64
    python3-perf-6.1.19-30.43.amzn2023.aarch64
    kernel-headers-6.1.19-30.43.amzn2023.aarch64
    kernel-livepatch-6.1.19-30.43-1.0-0.amzn2023.aarch64
    bpftool-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-devel-6.1.19-30.43.amzn2023.aarch64
    perf-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-6.1.19-30.43.amzn2023.aarch64
    kernel-debuginfo-common-aarch64-6.1.19-30.43.amzn2023.aarch64
    kernel-devel-6.1.19-30.43.amzn2023.aarch64

src:
    kernel-6.1.19-30.43.amzn2023.src

x86_64:
    kernel-tools-devel-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-devel-6.1.19-30.43.amzn2023.x86_64
    bpftool-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-livepatch-6.1.19-30.43-1.0-0.amzn2023.x86_64
    python3-perf-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-headers-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-static-6.1.19-30.43.amzn2023.x86_64
    bpftool-6.1.19-30.43.amzn2023.x86_64
    perf-6.1.19-30.43.amzn2023.x86_64
    python3-perf-6.1.19-30.43.amzn2023.x86_64
    kernel-tools-debuginfo-6.1.19-30.43.amzn2023.x86_64
    perf-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-tools-6.1.19-30.43.amzn2023.x86_64
    kernel-6.1.19-30.43.amzn2023.x86_64
    kernel-debuginfo-common-x86_64-6.1.19-30.43.amzn2023.x86_64
    kernel-devel-6.1.19-30.43.amzn2023.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: before 6.1.19-30.43

CPE2.3 External links

http://alas.aws.amazon.com/AL2023/ALAS-2023-138.html


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

9) Memory leak

EUVDB-ID: #VU86248

Risk: Low

CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-7192

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a local user to perform DoS attack on the target system.

The vulnerability exists due memory leak within the ctnetlink_create_conntrack() function in net/netfilter/nf_conntrack_netlink.c. A local user with CAP_NET_ADMIN privileges can perform denial of service attack.

Mitigation

Update the affected packages:

aarch64:
    kernel-libbpf-6.1.19-30.43.amzn2023.aarch64
    bpftool-6.1.19-30.43.amzn2023.aarch64
    kernel-libbpf-static-6.1.19-30.43.amzn2023.aarch64
    python3-perf-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-6.1.19-30.43.amzn2023.aarch64
    kernel-libbpf-devel-6.1.19-30.43.amzn2023.aarch64
    perf-debuginfo-6.1.19-30.43.amzn2023.aarch64
    python3-perf-6.1.19-30.43.amzn2023.aarch64
    kernel-headers-6.1.19-30.43.amzn2023.aarch64
    kernel-livepatch-6.1.19-30.43-1.0-0.amzn2023.aarch64
    bpftool-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-devel-6.1.19-30.43.amzn2023.aarch64
    perf-6.1.19-30.43.amzn2023.aarch64
    kernel-tools-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-debuginfo-6.1.19-30.43.amzn2023.aarch64
    kernel-6.1.19-30.43.amzn2023.aarch64
    kernel-debuginfo-common-aarch64-6.1.19-30.43.amzn2023.aarch64
    kernel-devel-6.1.19-30.43.amzn2023.aarch64

src:
    kernel-6.1.19-30.43.amzn2023.src

x86_64:
    kernel-tools-devel-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-devel-6.1.19-30.43.amzn2023.x86_64
    bpftool-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-livepatch-6.1.19-30.43-1.0-0.amzn2023.x86_64
    python3-perf-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-headers-6.1.19-30.43.amzn2023.x86_64
    kernel-libbpf-static-6.1.19-30.43.amzn2023.x86_64
    bpftool-6.1.19-30.43.amzn2023.x86_64
    perf-6.1.19-30.43.amzn2023.x86_64
    python3-perf-6.1.19-30.43.amzn2023.x86_64
    kernel-tools-debuginfo-6.1.19-30.43.amzn2023.x86_64
    perf-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-debuginfo-6.1.19-30.43.amzn2023.x86_64
    kernel-tools-6.1.19-30.43.amzn2023.x86_64
    kernel-6.1.19-30.43.amzn2023.x86_64
    kernel-debuginfo-common-x86_64-6.1.19-30.43.amzn2023.x86_64
    kernel-devel-6.1.19-30.43.amzn2023.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: before 6.1.19-30.43

CPE2.3 External links

http://alas.aws.amazon.com/AL2023/ALAS-2023-138.html


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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