Amazon Linux AMI update for kernel



Published: 2022-08-06
Risk Low
Patch available YES
Number of vulnerabilities 6
CVE-ID CVE-2022-2318
CVE-2022-26365
CVE-2022-33740
CVE-2022-33741
CVE-2022-33742
CVE-2022-33744
CWE-ID CWE-416
CWE-200
CWE-399
Exploitation vector Local
Public exploit N/A
Vulnerable software
Subscribe 		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 6 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU65318

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-2022-2318

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error caused by timer handler in net/rose/rose_timer.c of linux. A local user can exploit the vulnerability to perform a denial of service attack.

Mitigation

Update the affected packages:

i686:
    perf-4.14.287-148.504.amzn1.i686
    kernel-headers-4.14.287-148.504.amzn1.i686
    kernel-tools-4.14.287-148.504.amzn1.i686
    kernel-devel-4.14.287-148.504.amzn1.i686
    kernel-4.14.287-148.504.amzn1.i686
    kernel-tools-devel-4.14.287-148.504.amzn1.i686
    perf-debuginfo-4.14.287-148.504.amzn1.i686
    kernel-debuginfo-4.14.287-148.504.amzn1.i686
    kernel-tools-debuginfo-4.14.287-148.504.amzn1.i686
    kernel-debuginfo-common-i686-4.14.287-148.504.amzn1.i686

src:
    kernel-4.14.287-148.504.amzn1.src

x86_64:
    perf-debuginfo-4.14.287-148.504.amzn1.x86_64
    kernel-debuginfo-common-x86_64-4.14.287-148.504.amzn1.x86_64
    perf-4.14.287-148.504.amzn1.x86_64
    kernel-tools-debuginfo-4.14.287-148.504.amzn1.x86_64
    kernel-tools-4.14.287-148.504.amzn1.x86_64
    kernel-4.14.287-148.504.amzn1.x86_64
    kernel-tools-devel-4.14.287-148.504.amzn1.x86_64
    kernel-devel-4.14.287-148.504.amzn1.x86_64
    kernel-debuginfo-4.14.287-148.504.amzn1.x86_64
    kernel-headers-4.14.287-148.504.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: before 4.14.287-148.504

External links

http://alas.aws.amazon.com/ALAS-2022-1624.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) Information disclosure

EUVDB-ID: #VU65345

Risk: Low

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

CVE-ID: CVE-2022-26365

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend. A local user can gain unauthorized access to sensitive information on the system.

Mitigation

Update the affected packages:

i686:
    perf-4.14.287-148.504.amzn1.i686
    kernel-headers-4.14.287-148.504.amzn1.i686
    kernel-tools-4.14.287-148.504.amzn1.i686
    kernel-devel-4.14.287-148.504.amzn1.i686
    kernel-4.14.287-148.504.amzn1.i686
    kernel-tools-devel-4.14.287-148.504.amzn1.i686
    perf-debuginfo-4.14.287-148.504.amzn1.i686
    kernel-debuginfo-4.14.287-148.504.amzn1.i686
    kernel-tools-debuginfo-4.14.287-148.504.amzn1.i686
    kernel-debuginfo-common-i686-4.14.287-148.504.amzn1.i686

src:
    kernel-4.14.287-148.504.amzn1.src

x86_64:
    perf-debuginfo-4.14.287-148.504.amzn1.x86_64
    kernel-debuginfo-common-x86_64-4.14.287-148.504.amzn1.x86_64
    perf-4.14.287-148.504.amzn1.x86_64
    kernel-tools-debuginfo-4.14.287-148.504.amzn1.x86_64
    kernel-tools-4.14.287-148.504.amzn1.x86_64
    kernel-4.14.287-148.504.amzn1.x86_64
    kernel-tools-devel-4.14.287-148.504.amzn1.x86_64
    kernel-devel-4.14.287-148.504.amzn1.x86_64
    kernel-debuginfo-4.14.287-148.504.amzn1.x86_64
    kernel-headers-4.14.287-148.504.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: before 4.14.287-148.504

External links

http://alas.aws.amazon.com/ALAS-2022-1624.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) Information disclosure

EUVDB-ID: #VU65346

Risk: Low

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

CVE-ID: CVE-2022-33740

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend. A local user can gain unauthorized access to sensitive information on the system.

Mitigation

Update the affected packages:

i686:
    perf-4.14.287-148.504.amzn1.i686
    kernel-headers-4.14.287-148.504.amzn1.i686
    kernel-tools-4.14.287-148.504.amzn1.i686
    kernel-devel-4.14.287-148.504.amzn1.i686
    kernel-4.14.287-148.504.amzn1.i686
    kernel-tools-devel-4.14.287-148.504.amzn1.i686
    perf-debuginfo-4.14.287-148.504.amzn1.i686
    kernel-debuginfo-4.14.287-148.504.amzn1.i686
    kernel-tools-debuginfo-4.14.287-148.504.amzn1.i686
    kernel-debuginfo-common-i686-4.14.287-148.504.amzn1.i686

src:
    kernel-4.14.287-148.504.amzn1.src

x86_64:
    perf-debuginfo-4.14.287-148.504.amzn1.x86_64
    kernel-debuginfo-common-x86_64-4.14.287-148.504.amzn1.x86_64
    perf-4.14.287-148.504.amzn1.x86_64
    kernel-tools-debuginfo-4.14.287-148.504.amzn1.x86_64
    kernel-tools-4.14.287-148.504.amzn1.x86_64
    kernel-4.14.287-148.504.amzn1.x86_64
    kernel-tools-devel-4.14.287-148.504.amzn1.x86_64
    kernel-devel-4.14.287-148.504.amzn1.x86_64
    kernel-debuginfo-4.14.287-148.504.amzn1.x86_64
    kernel-headers-4.14.287-148.504.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: before 4.14.287-148.504

External links

http://alas.aws.amazon.com/ALAS-2022-1624.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) Information disclosure

EUVDB-ID: #VU65351

Risk: Low

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

CVE-ID: CVE-2022-33741

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend. A local user can gain unauthorized access to sensitive information on the system.

Mitigation

Update the affected packages:

i686:
    perf-4.14.287-148.504.amzn1.i686
    kernel-headers-4.14.287-148.504.amzn1.i686
    kernel-tools-4.14.287-148.504.amzn1.i686
    kernel-devel-4.14.287-148.504.amzn1.i686
    kernel-4.14.287-148.504.amzn1.i686
    kernel-tools-devel-4.14.287-148.504.amzn1.i686
    perf-debuginfo-4.14.287-148.504.amzn1.i686
    kernel-debuginfo-4.14.287-148.504.amzn1.i686
    kernel-tools-debuginfo-4.14.287-148.504.amzn1.i686
    kernel-debuginfo-common-i686-4.14.287-148.504.amzn1.i686

src:
    kernel-4.14.287-148.504.amzn1.src

x86_64:
    perf-debuginfo-4.14.287-148.504.amzn1.x86_64
    kernel-debuginfo-common-x86_64-4.14.287-148.504.amzn1.x86_64
    perf-4.14.287-148.504.amzn1.x86_64
    kernel-tools-debuginfo-4.14.287-148.504.amzn1.x86_64
    kernel-tools-4.14.287-148.504.amzn1.x86_64
    kernel-4.14.287-148.504.amzn1.x86_64
    kernel-tools-devel-4.14.287-148.504.amzn1.x86_64
    kernel-devel-4.14.287-148.504.amzn1.x86_64
    kernel-debuginfo-4.14.287-148.504.amzn1.x86_64
    kernel-headers-4.14.287-148.504.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: before 4.14.287-148.504

External links

http://alas.aws.amazon.com/ALAS-2022-1624.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) Information disclosure

EUVDB-ID: #VU65348

Risk: Low

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

CVE-ID: CVE-2022-33742

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend. A local user can gain unauthorized access to sensitive information on the system.

Mitigation

Update the affected packages:

i686:
    perf-4.14.287-148.504.amzn1.i686
    kernel-headers-4.14.287-148.504.amzn1.i686
    kernel-tools-4.14.287-148.504.amzn1.i686
    kernel-devel-4.14.287-148.504.amzn1.i686
    kernel-4.14.287-148.504.amzn1.i686
    kernel-tools-devel-4.14.287-148.504.amzn1.i686
    perf-debuginfo-4.14.287-148.504.amzn1.i686
    kernel-debuginfo-4.14.287-148.504.amzn1.i686
    kernel-tools-debuginfo-4.14.287-148.504.amzn1.i686
    kernel-debuginfo-common-i686-4.14.287-148.504.amzn1.i686

src:
    kernel-4.14.287-148.504.amzn1.src

x86_64:
    perf-debuginfo-4.14.287-148.504.amzn1.x86_64
    kernel-debuginfo-common-x86_64-4.14.287-148.504.amzn1.x86_64
    perf-4.14.287-148.504.amzn1.x86_64
    kernel-tools-debuginfo-4.14.287-148.504.amzn1.x86_64
    kernel-tools-4.14.287-148.504.amzn1.x86_64
    kernel-4.14.287-148.504.amzn1.x86_64
    kernel-tools-devel-4.14.287-148.504.amzn1.x86_64
    kernel-devel-4.14.287-148.504.amzn1.x86_64
    kernel-debuginfo-4.14.287-148.504.amzn1.x86_64
    kernel-headers-4.14.287-148.504.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: before 4.14.287-148.504

External links

http://alas.aws.amazon.com/ALAS-2022-1624.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.

6) Resource management error

EUVDB-ID: #VU65844

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-33744

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows an attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of foreign mappings performed by rbtree when mapping pages of Arm guests. An unprivileged Arm guest can cause inconsistencies of the rbtree via PV devices, which can lead to denial of service of dom0 and cause crashes or the inability to perform further mappings of other guests' memory pages.

Mitigation

Update the affected packages:

i686:
    perf-4.14.287-148.504.amzn1.i686
    kernel-headers-4.14.287-148.504.amzn1.i686
    kernel-tools-4.14.287-148.504.amzn1.i686
    kernel-devel-4.14.287-148.504.amzn1.i686
    kernel-4.14.287-148.504.amzn1.i686
    kernel-tools-devel-4.14.287-148.504.amzn1.i686
    perf-debuginfo-4.14.287-148.504.amzn1.i686
    kernel-debuginfo-4.14.287-148.504.amzn1.i686
    kernel-tools-debuginfo-4.14.287-148.504.amzn1.i686
    kernel-debuginfo-common-i686-4.14.287-148.504.amzn1.i686

src:
    kernel-4.14.287-148.504.amzn1.src

x86_64:
    perf-debuginfo-4.14.287-148.504.amzn1.x86_64
    kernel-debuginfo-common-x86_64-4.14.287-148.504.amzn1.x86_64
    perf-4.14.287-148.504.amzn1.x86_64
    kernel-tools-debuginfo-4.14.287-148.504.amzn1.x86_64
    kernel-tools-4.14.287-148.504.amzn1.x86_64
    kernel-4.14.287-148.504.amzn1.x86_64
    kernel-tools-devel-4.14.287-148.504.amzn1.x86_64
    kernel-devel-4.14.287-148.504.amzn1.x86_64
    kernel-debuginfo-4.14.287-148.504.amzn1.x86_64
    kernel-headers-4.14.287-148.504.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: before 4.14.287-148.504

External links

http://alas.aws.amazon.com/ALAS-2022-1624.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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