SUSE update for the Linux Kernel

Published: 2023-08-16

Risk	Medium
Patch available	YES
Number of vulnerabilities	13
CVE-ID	CVE-2017-18344 CVE-2018-3639 CVE-2022-40982 CVE-2022-45919 CVE-2023-0459 CVE-2023-20593 CVE-2023-3141 CVE-2023-3159 CVE-2023-3161 CVE-2023-3268 CVE-2023-3567 CVE-2023-35824 CVE-2023-3776
CWE-ID	CWE-125 CWE-362 CWE-1342 CWE-416 CWE-1037 CWE-682
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software Subscribe	SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE Operating systems & Components / Operating system SUSE Linux Enterprise Server 11 Operating systems & Components / Operating system kernel-ec2-base Operating systems & Components / Operating system package or component kernel-syms Operating systems & Components / Operating system package or component kernel-xen-devel Operating systems & Components / Operating system package or component kernel-trace-devel Operating systems & Components / Operating system package or component kernel-default-base Operating systems & Components / Operating system package or component kernel-xen-base Operating systems & Components / Operating system package or component kernel-source Operating systems & Components / Operating system package or component kernel-default-devel Operating systems & Components / Operating system package or component kernel-trace-base Operating systems & Components / Operating system package or component kernel-ec2-devel Operating systems & Components / Operating system package or component kernel-ec2 Operating systems & Components / Operating system package or component kernel-xen Operating systems & Components / Operating system package or component kernel-trace Operating systems & Components / Operating system package or component kernel-default Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 13 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU14184

Risk: Low

CVSSv3.1: 3 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2017-18344

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: Yes

Description

The vulnerability allows a local attacker to obtain potentially sensitive information.

The vulnerability exists due to out-of-bounds memory read error in the 'sigevent->sigev_notify' field of show_timer() function in the timer subsystem. A local attacker can obtain potentially sensitive information from system memory.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE: 11-SP4

SUSE Linux Enterprise Server 11: SP4

kernel-ec2-base: before 3.0.101-108.144.1

kernel-syms: before 3.0.101-108.144.1

kernel-xen-devel: before 3.0.101-108.144.1

kernel-trace-devel: before 3.0.101-108.144.1

kernel-default-base: before 3.0.101-108.144.1

kernel-xen-base: before 3.0.101-108.144.1

kernel-source: before 3.0.101-108.144.1

kernel-default-devel: before 3.0.101-108.144.1

kernel-trace-base: before 3.0.101-108.144.1

kernel-ec2-devel: before 3.0.101-108.144.1

kernel-ec2: before 3.0.101-108.144.1

kernel-xen: before 3.0.101-108.144.1

kernel-trace: before 3.0.101-108.144.1

kernel-default: before 3.0.101-108.144.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20233333-1/

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.

2) Speculative Store Bypass

EUVDB-ID: #VU12911

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-2018-3639

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows a local attacker to obtain potentially sensitive information on the target system.

The weakness exists due to race conditions in CPU cache processing. A local attacker can conduct a side-channel attack to exploit a flaw in the speculative execution of Load and Store instructions to read privileged memory.

Note: the vulnerability is referred to as "Spectre variant 4".

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE: 11-SP4

SUSE Linux Enterprise Server 11: SP4

kernel-ec2-base: before 3.0.101-108.144.1

kernel-syms: before 3.0.101-108.144.1

kernel-xen-devel: before 3.0.101-108.144.1

kernel-trace-devel: before 3.0.101-108.144.1

kernel-default-base: before 3.0.101-108.144.1

kernel-xen-base: before 3.0.101-108.144.1

kernel-source: before 3.0.101-108.144.1

kernel-default-devel: before 3.0.101-108.144.1

kernel-trace-base: before 3.0.101-108.144.1

kernel-ec2-devel: before 3.0.101-108.144.1

kernel-ec2: before 3.0.101-108.144.1

kernel-xen: before 3.0.101-108.144.1

kernel-trace: before 3.0.101-108.144.1

kernel-default: before 3.0.101-108.144.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20233333-1/

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 exposure through microarchitectural state after transient execution

EUVDB-ID: #VU79262

Risk: Medium

CVSSv3.1: 7.6 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-40982

CWE-ID: CWE-1342 - Information Exposure through Microarchitectural State after Transient Execution

Exploit availability: No

Description

The vulnerability allows a malicious guest to escalate privileges on the system.

The vulnerability exists due to the way data is shared between threads whereby the AVX GATHER instructions on Intel processors can forward the content of stale vector registers to dependent instructions. A malicious guest can infer data from different contexts on the same core and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE: 11-SP4

SUSE Linux Enterprise Server 11: SP4

kernel-ec2-base: before 3.0.101-108.144.1

kernel-syms: before 3.0.101-108.144.1

kernel-xen-devel: before 3.0.101-108.144.1

kernel-trace-devel: before 3.0.101-108.144.1

kernel-default-base: before 3.0.101-108.144.1

kernel-xen-base: before 3.0.101-108.144.1

kernel-source: before 3.0.101-108.144.1

kernel-default-devel: before 3.0.101-108.144.1

kernel-trace-base: before 3.0.101-108.144.1

kernel-ec2-devel: before 3.0.101-108.144.1

kernel-ec2: before 3.0.101-108.144.1

kernel-xen: before 3.0.101-108.144.1

kernel-trace: before 3.0.101-108.144.1

kernel-default: before 3.0.101-108.144.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20233333-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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

4) Use-after-free

EUVDB-ID: #VU75337

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-2022-45919

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 drivers/media/dvb-core/dvb_ca_en50221.c in Linux kernel. A local user can trigger a race condition and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE: 11-SP4

SUSE Linux Enterprise Server 11: SP4

kernel-ec2-base: before 3.0.101-108.144.1

kernel-syms: before 3.0.101-108.144.1

kernel-xen-devel: before 3.0.101-108.144.1

kernel-trace-devel: before 3.0.101-108.144.1

kernel-default-base: before 3.0.101-108.144.1

kernel-xen-base: before 3.0.101-108.144.1

kernel-source: before 3.0.101-108.144.1

kernel-default-devel: before 3.0.101-108.144.1

kernel-trace-base: before 3.0.101-108.144.1

kernel-ec2-devel: before 3.0.101-108.144.1

kernel-ec2: before 3.0.101-108.144.1

kernel-xen: before 3.0.101-108.144.1

kernel-trace: before 3.0.101-108.144.1

kernel-default: before 3.0.101-108.144.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20233333-1/

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) Processor optimization removal or modification of security-critical code

EUVDB-ID: #VU76222

Risk: Low

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

CVE-ID: CVE-2023-0459

CWE-ID: CWE-1037 - Processor optimization removal or modification of security-critical code

Exploit availability: No

Description

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

The vulnerability exists due to improper implementation of speculative execution barriers in usercopy functions
in certain situations. A local user can gain access to sensitive information.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE: 11-SP4

SUSE Linux Enterprise Server 11: SP4

kernel-ec2-base: before 3.0.101-108.144.1

kernel-syms: before 3.0.101-108.144.1

kernel-xen-devel: before 3.0.101-108.144.1

kernel-trace-devel: before 3.0.101-108.144.1

kernel-default-base: before 3.0.101-108.144.1

kernel-xen-base: before 3.0.101-108.144.1

kernel-source: before 3.0.101-108.144.1

kernel-default-devel: before 3.0.101-108.144.1

kernel-trace-base: before 3.0.101-108.144.1

kernel-ec2-devel: before 3.0.101-108.144.1

kernel-ec2: before 3.0.101-108.144.1

kernel-xen: before 3.0.101-108.144.1

kernel-trace: before 3.0.101-108.144.1

kernel-default: before 3.0.101-108.144.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20233333-1/

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) Use-after-free

EUVDB-ID: #VU78572

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-2023-20593

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 AMD Zen2 processors. A local user can trigger a use-after-free error and execute arbitrary code on the system.

Note, the vulnerability was dubbed Zenbleed.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE: 11-SP4

SUSE Linux Enterprise Server 11: SP4

kernel-ec2-base: before 3.0.101-108.144.1

kernel-syms: before 3.0.101-108.144.1

kernel-xen-devel: before 3.0.101-108.144.1

kernel-trace-devel: before 3.0.101-108.144.1

kernel-default-base: before 3.0.101-108.144.1

kernel-xen-base: before 3.0.101-108.144.1

kernel-source: before 3.0.101-108.144.1

kernel-default-devel: before 3.0.101-108.144.1

kernel-trace-base: before 3.0.101-108.144.1

kernel-ec2-devel: before 3.0.101-108.144.1

kernel-ec2: before 3.0.101-108.144.1

kernel-xen: before 3.0.101-108.144.1

kernel-trace: before 3.0.101-108.144.1

kernel-default: before 3.0.101-108.144.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20233333-1/

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.

7) Use-after-free

EUVDB-ID: #VU77955

Risk: Low

CVSSv3.1: 6.2 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-3141

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 within the r592_remove() function of drivers/memstick/host/r592.c in media access in the Linux kernel. A local user can trigger a use-after-free error and escalate privileges on the system.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE: 11-SP4

SUSE Linux Enterprise Server 11: SP4

kernel-ec2-base: before 3.0.101-108.144.1

kernel-syms: before 3.0.101-108.144.1

kernel-xen-devel: before 3.0.101-108.144.1

kernel-trace-devel: before 3.0.101-108.144.1

kernel-default-base: before 3.0.101-108.144.1

kernel-xen-base: before 3.0.101-108.144.1

kernel-source: before 3.0.101-108.144.1

kernel-default-devel: before 3.0.101-108.144.1

kernel-trace-base: before 3.0.101-108.144.1

kernel-ec2-devel: before 3.0.101-108.144.1

kernel-ec2: before 3.0.101-108.144.1

kernel-xen: before 3.0.101-108.144.1

kernel-trace: before 3.0.101-108.144.1

kernel-default: before 3.0.101-108.144.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20233333-1/

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) Use-after-free

EUVDB-ID: #VU78064

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-2023-3159

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 within the outbound_phy_packet_callback() function in driver/firewire in Linux kernel. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE: 11-SP4

SUSE Linux Enterprise Server 11: SP4

kernel-ec2-base: before 3.0.101-108.144.1

kernel-syms: before 3.0.101-108.144.1

kernel-xen-devel: before 3.0.101-108.144.1

kernel-trace-devel: before 3.0.101-108.144.1

kernel-default-base: before 3.0.101-108.144.1

kernel-xen-base: before 3.0.101-108.144.1

kernel-source: before 3.0.101-108.144.1

kernel-default-devel: before 3.0.101-108.144.1

kernel-trace-base: before 3.0.101-108.144.1

kernel-ec2-devel: before 3.0.101-108.144.1

kernel-ec2: before 3.0.101-108.144.1

kernel-xen: before 3.0.101-108.144.1

kernel-trace: before 3.0.101-108.144.1

kernel-default: before 3.0.101-108.144.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20233333-1/

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) Incorrect calculation

EUVDB-ID: #VU77956

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-2023-3161

CWE-ID: CWE-682 - Incorrect Calculation

Exploit availability: No

Description

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

The vulnerability exists due to incorrect calculation in the Framebuffer Console (fbcon) in the Linux kernel. A local user can perform a denial of service (DoS) attack.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE: 11-SP4

SUSE Linux Enterprise Server 11: SP4

kernel-ec2-base: before 3.0.101-108.144.1

kernel-syms: before 3.0.101-108.144.1

kernel-xen-devel: before 3.0.101-108.144.1

kernel-trace-devel: before 3.0.101-108.144.1

kernel-default-base: before 3.0.101-108.144.1

kernel-xen-base: before 3.0.101-108.144.1

kernel-source: before 3.0.101-108.144.1

kernel-default-devel: before 3.0.101-108.144.1

kernel-trace-base: before 3.0.101-108.144.1

kernel-ec2-devel: before 3.0.101-108.144.1

kernel-ec2: before 3.0.101-108.144.1

kernel-xen: before 3.0.101-108.144.1

kernel-trace: before 3.0.101-108.144.1

kernel-default: before 3.0.101-108.144.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20233333-1/

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.

10) Out-of-bounds read

EUVDB-ID: #VU78008

Risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-3268

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition within the relay_file_read_start_pos() function in kernel/relay.c in the relayfs. A local user can trigger an out-of-bounds read error and read contents of memory on the system or crash the kernel.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE: 11-SP4

SUSE Linux Enterprise Server 11: SP4

kernel-ec2-base: before 3.0.101-108.144.1

kernel-syms: before 3.0.101-108.144.1

kernel-xen-devel: before 3.0.101-108.144.1

kernel-trace-devel: before 3.0.101-108.144.1

kernel-default-base: before 3.0.101-108.144.1

kernel-xen-base: before 3.0.101-108.144.1

kernel-source: before 3.0.101-108.144.1

kernel-default-devel: before 3.0.101-108.144.1

kernel-trace-base: before 3.0.101-108.144.1

kernel-ec2-devel: before 3.0.101-108.144.1

kernel-ec2: before 3.0.101-108.144.1

kernel-xen: before 3.0.101-108.144.1

kernel-trace: before 3.0.101-108.144.1

kernel-default: before 3.0.101-108.144.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20233333-1/

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.

11) Use-after-free

EUVDB-ID: #VU79491

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-2023-3567

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 within the vc_screen() function in vcs_read in drivers/tty/vt/vc_screen.c. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE: 11-SP4

SUSE Linux Enterprise Server 11: SP4

kernel-ec2-base: before 3.0.101-108.144.1

kernel-syms: before 3.0.101-108.144.1

kernel-xen-devel: before 3.0.101-108.144.1

kernel-trace-devel: before 3.0.101-108.144.1

kernel-default-base: before 3.0.101-108.144.1

kernel-xen-base: before 3.0.101-108.144.1

kernel-source: before 3.0.101-108.144.1

kernel-default-devel: before 3.0.101-108.144.1

kernel-trace-base: before 3.0.101-108.144.1

kernel-ec2-devel: before 3.0.101-108.144.1

kernel-ec2: before 3.0.101-108.144.1

kernel-xen: before 3.0.101-108.144.1

kernel-trace: before 3.0.101-108.144.1

kernel-default: before 3.0.101-108.144.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20233333-1/

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.

12) Use-after-free

EUVDB-ID: #VU78062

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-2023-35824

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 within the dm1105_remove() function in drivers/media/pci/dm1105/dm1105.c. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE: 11-SP4

SUSE Linux Enterprise Server 11: SP4

kernel-ec2-base: before 3.0.101-108.144.1

kernel-syms: before 3.0.101-108.144.1

kernel-xen-devel: before 3.0.101-108.144.1

kernel-trace-devel: before 3.0.101-108.144.1

kernel-default-base: before 3.0.101-108.144.1

kernel-xen-base: before 3.0.101-108.144.1

kernel-source: before 3.0.101-108.144.1

kernel-default-devel: before 3.0.101-108.144.1

kernel-trace-base: before 3.0.101-108.144.1

kernel-ec2-devel: before 3.0.101-108.144.1

kernel-ec2: before 3.0.101-108.144.1

kernel-xen: before 3.0.101-108.144.1

kernel-trace: before 3.0.101-108.144.1

kernel-default: before 3.0.101-108.144.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20233333-1/

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.

13) Use-after-free

EUVDB-ID: #VU79285

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-2023-3776

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 within the the Linux kernel's net/sched: cls_fw component. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE: 11-SP4

SUSE Linux Enterprise Server 11: SP4

kernel-ec2-base: before 3.0.101-108.144.1

kernel-syms: before 3.0.101-108.144.1

kernel-xen-devel: before 3.0.101-108.144.1

kernel-trace-devel: before 3.0.101-108.144.1

kernel-default-base: before 3.0.101-108.144.1

kernel-xen-base: before 3.0.101-108.144.1

kernel-source: before 3.0.101-108.144.1

kernel-default-devel: before 3.0.101-108.144.1

kernel-trace-base: before 3.0.101-108.144.1

kernel-ec2-devel: before 3.0.101-108.144.1

kernel-ec2: before 3.0.101-108.144.1

kernel-xen: before 3.0.101-108.144.1

kernel-trace: before 3.0.101-108.144.1

kernel-default: before 3.0.101-108.144.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20233333-1/

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.