Amazon Linux AMI update for kernel

Published: 2024-08-06

Risk	Low
Patch available	YES
Number of vulnerabilities	6
CVE-ID	CVE-2022-2196 CVE-2023-0458 CVE-2023-1281 CVE-2023-26545 CVE-2023-52646 CVE-2023-52707
CWE-ID	CWE-665 CWE-476 CWE-416 CWE-415
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) Improper Initialization

EUVDB-ID: #VU74019

Risk: Low

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

CVE-ID: CVE-2022-2196

CWE-ID: CWE-665 - Improper Initialization

Exploit availability: No

Description

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

The vulnerability exists due to improper initialization within nVMX in Linux kernel. A local user can perform speculative execution attacks and escalate privileges on the system.

Mitigation

Update the affected packages:

aarch64:
    perf-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-tools-debuginfo-6.1.15-28.43.amzn2023.aarch64
    bpftool-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-tools-6.1.15-28.43.amzn2023.aarch64
    python3-perf-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-livepatch-6.1.15-28.43-1.0-0.amzn2023.aarch64
    python3-perf-6.1.15-28.43.amzn2023.aarch64
    kernel-tools-devel-6.1.15-28.43.amzn2023.aarch64
    kernel-libbpf-6.1.15-28.43.amzn2023.aarch64
    kernel-libbpf-static-6.1.15-28.43.amzn2023.aarch64
    kernel-libbpf-devel-6.1.15-28.43.amzn2023.aarch64
    bpftool-6.1.15-28.43.amzn2023.aarch64
    perf-6.1.15-28.43.amzn2023.aarch64
    kernel-headers-6.1.15-28.43.amzn2023.aarch64
    kernel-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-6.1.15-28.43.amzn2023.aarch64
    kernel-debuginfo-common-aarch64-6.1.15-28.43.amzn2023.aarch64
    kernel-devel-6.1.15-28.43.amzn2023.aarch64

src:
    kernel-6.1.15-28.43.amzn2023.src

x86_64:
    python3-perf-6.1.15-28.43.amzn2023.x86_64
    bpftool-6.1.15-28.43.amzn2023.x86_64
    kernel-libbpf-devel-6.1.15-28.43.amzn2023.x86_64
    kernel-tools-debuginfo-6.1.15-28.43.amzn2023.x86_64
    bpftool-debuginfo-6.1.15-28.43.amzn2023.x86_64
    kernel-livepatch-6.1.15-28.43-1.0-0.amzn2023.x86_64
    kernel-libbpf-6.1.15-28.43.amzn2023.x86_64
    python3-perf-debuginfo-6.1.15-28.43.amzn2023.x86_64
    perf-6.1.15-28.43.amzn2023.x86_64
    kernel-tools-6.1.15-28.43.amzn2023.x86_64
    kernel-libbpf-static-6.1.15-28.43.amzn2023.x86_64
    perf-debuginfo-6.1.15-28.43.amzn2023.x86_64
    kernel-tools-devel-6.1.15-28.43.amzn2023.x86_64
    kernel-headers-6.1.15-28.43.amzn2023.x86_64
    kernel-debuginfo-6.1.15-28.43.amzn2023.x86_64
    kernel-6.1.15-28.43.amzn2023.x86_64
    kernel-debuginfo-common-x86_64-6.1.15-28.43.amzn2023.x86_64
    kernel-devel-6.1.15-28.43.amzn2023.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: before 6.1.15-28.43

CPE2.3

cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:

External links

http://alas.aws.amazon.com/AL2023/ALAS-2023-127.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) NULL pointer dereference

EUVDB-ID: #VU76223

Risk: Low

CVSSv3.1: 4.1 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-0458

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to a NULL pointer dereference error in the do_prlimit() function. A local user can pass specially crafted data to the system and perform a denial of service (DoS) attack.

Mitigation

Update the affected packages:

aarch64:
    perf-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-tools-debuginfo-6.1.15-28.43.amzn2023.aarch64
    bpftool-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-tools-6.1.15-28.43.amzn2023.aarch64
    python3-perf-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-livepatch-6.1.15-28.43-1.0-0.amzn2023.aarch64
    python3-perf-6.1.15-28.43.amzn2023.aarch64
    kernel-tools-devel-6.1.15-28.43.amzn2023.aarch64
    kernel-libbpf-6.1.15-28.43.amzn2023.aarch64
    kernel-libbpf-static-6.1.15-28.43.amzn2023.aarch64
    kernel-libbpf-devel-6.1.15-28.43.amzn2023.aarch64
    bpftool-6.1.15-28.43.amzn2023.aarch64
    perf-6.1.15-28.43.amzn2023.aarch64
    kernel-headers-6.1.15-28.43.amzn2023.aarch64
    kernel-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-6.1.15-28.43.amzn2023.aarch64
    kernel-debuginfo-common-aarch64-6.1.15-28.43.amzn2023.aarch64
    kernel-devel-6.1.15-28.43.amzn2023.aarch64

src:
    kernel-6.1.15-28.43.amzn2023.src

x86_64:
    python3-perf-6.1.15-28.43.amzn2023.x86_64
    bpftool-6.1.15-28.43.amzn2023.x86_64
    kernel-libbpf-devel-6.1.15-28.43.amzn2023.x86_64
    kernel-tools-debuginfo-6.1.15-28.43.amzn2023.x86_64
    bpftool-debuginfo-6.1.15-28.43.amzn2023.x86_64
    kernel-livepatch-6.1.15-28.43-1.0-0.amzn2023.x86_64
    kernel-libbpf-6.1.15-28.43.amzn2023.x86_64
    python3-perf-debuginfo-6.1.15-28.43.amzn2023.x86_64
    perf-6.1.15-28.43.amzn2023.x86_64
    kernel-tools-6.1.15-28.43.amzn2023.x86_64
    kernel-libbpf-static-6.1.15-28.43.amzn2023.x86_64
    perf-debuginfo-6.1.15-28.43.amzn2023.x86_64
    kernel-tools-devel-6.1.15-28.43.amzn2023.x86_64
    kernel-headers-6.1.15-28.43.amzn2023.x86_64
    kernel-debuginfo-6.1.15-28.43.amzn2023.x86_64
    kernel-6.1.15-28.43.amzn2023.x86_64
    kernel-debuginfo-common-x86_64-6.1.15-28.43.amzn2023.x86_64
    kernel-devel-6.1.15-28.43.amzn2023.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: before 6.1.15-28.43

CPE2.3

cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:

External links

http://alas.aws.amazon.com/AL2023/ALAS-2023-127.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) Use-after-free

EUVDB-ID: #VU74122

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-2023-1281

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 Linux kernel traffic control index filter (tcindex) when the tcf_exts_exec() function is called with the destroyed tcf_ext. A local user attacker can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected packages:

aarch64:
    perf-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-tools-debuginfo-6.1.15-28.43.amzn2023.aarch64
    bpftool-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-tools-6.1.15-28.43.amzn2023.aarch64
    python3-perf-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-livepatch-6.1.15-28.43-1.0-0.amzn2023.aarch64
    python3-perf-6.1.15-28.43.amzn2023.aarch64
    kernel-tools-devel-6.1.15-28.43.amzn2023.aarch64
    kernel-libbpf-6.1.15-28.43.amzn2023.aarch64
    kernel-libbpf-static-6.1.15-28.43.amzn2023.aarch64
    kernel-libbpf-devel-6.1.15-28.43.amzn2023.aarch64
    bpftool-6.1.15-28.43.amzn2023.aarch64
    perf-6.1.15-28.43.amzn2023.aarch64
    kernel-headers-6.1.15-28.43.amzn2023.aarch64
    kernel-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-6.1.15-28.43.amzn2023.aarch64
    kernel-debuginfo-common-aarch64-6.1.15-28.43.amzn2023.aarch64
    kernel-devel-6.1.15-28.43.amzn2023.aarch64

src:
    kernel-6.1.15-28.43.amzn2023.src

x86_64:
    python3-perf-6.1.15-28.43.amzn2023.x86_64
    bpftool-6.1.15-28.43.amzn2023.x86_64
    kernel-libbpf-devel-6.1.15-28.43.amzn2023.x86_64
    kernel-tools-debuginfo-6.1.15-28.43.amzn2023.x86_64
    bpftool-debuginfo-6.1.15-28.43.amzn2023.x86_64
    kernel-livepatch-6.1.15-28.43-1.0-0.amzn2023.x86_64
    kernel-libbpf-6.1.15-28.43.amzn2023.x86_64
    python3-perf-debuginfo-6.1.15-28.43.amzn2023.x86_64
    perf-6.1.15-28.43.amzn2023.x86_64
    kernel-tools-6.1.15-28.43.amzn2023.x86_64
    kernel-libbpf-static-6.1.15-28.43.amzn2023.x86_64
    perf-debuginfo-6.1.15-28.43.amzn2023.x86_64
    kernel-tools-devel-6.1.15-28.43.amzn2023.x86_64
    kernel-headers-6.1.15-28.43.amzn2023.x86_64
    kernel-debuginfo-6.1.15-28.43.amzn2023.x86_64
    kernel-6.1.15-28.43.amzn2023.x86_64
    kernel-debuginfo-common-x86_64-6.1.15-28.43.amzn2023.x86_64
    kernel-devel-6.1.15-28.43.amzn2023.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: before 6.1.15-28.43

CPE2.3

cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:

External links

http://alas.aws.amazon.com/AL2023/ALAS-2023-127.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) Double Free

EUVDB-ID: #VU73766

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-2023-26545

CWE-ID: CWE-415 - Double Free

Exploit availability: No

Description

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

The vulnerability exists due to a double free in net/mpls/af_mpls.c during the renaming of a device. A local user can trigger a double free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected packages:

aarch64:
    perf-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-tools-debuginfo-6.1.15-28.43.amzn2023.aarch64
    bpftool-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-tools-6.1.15-28.43.amzn2023.aarch64
    python3-perf-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-livepatch-6.1.15-28.43-1.0-0.amzn2023.aarch64
    python3-perf-6.1.15-28.43.amzn2023.aarch64
    kernel-tools-devel-6.1.15-28.43.amzn2023.aarch64
    kernel-libbpf-6.1.15-28.43.amzn2023.aarch64
    kernel-libbpf-static-6.1.15-28.43.amzn2023.aarch64
    kernel-libbpf-devel-6.1.15-28.43.amzn2023.aarch64
    bpftool-6.1.15-28.43.amzn2023.aarch64
    perf-6.1.15-28.43.amzn2023.aarch64
    kernel-headers-6.1.15-28.43.amzn2023.aarch64
    kernel-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-6.1.15-28.43.amzn2023.aarch64
    kernel-debuginfo-common-aarch64-6.1.15-28.43.amzn2023.aarch64
    kernel-devel-6.1.15-28.43.amzn2023.aarch64

src:
    kernel-6.1.15-28.43.amzn2023.src

x86_64:
    python3-perf-6.1.15-28.43.amzn2023.x86_64
    bpftool-6.1.15-28.43.amzn2023.x86_64
    kernel-libbpf-devel-6.1.15-28.43.amzn2023.x86_64
    kernel-tools-debuginfo-6.1.15-28.43.amzn2023.x86_64
    bpftool-debuginfo-6.1.15-28.43.amzn2023.x86_64
    kernel-livepatch-6.1.15-28.43-1.0-0.amzn2023.x86_64
    kernel-libbpf-6.1.15-28.43.amzn2023.x86_64
    python3-perf-debuginfo-6.1.15-28.43.amzn2023.x86_64
    perf-6.1.15-28.43.amzn2023.x86_64
    kernel-tools-6.1.15-28.43.amzn2023.x86_64
    kernel-libbpf-static-6.1.15-28.43.amzn2023.x86_64
    perf-debuginfo-6.1.15-28.43.amzn2023.x86_64
    kernel-tools-devel-6.1.15-28.43.amzn2023.x86_64
    kernel-headers-6.1.15-28.43.amzn2023.x86_64
    kernel-debuginfo-6.1.15-28.43.amzn2023.x86_64
    kernel-6.1.15-28.43.amzn2023.x86_64
    kernel-debuginfo-common-x86_64-6.1.15-28.43.amzn2023.x86_64
    kernel-devel-6.1.15-28.43.amzn2023.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: before 6.1.15-28.43

CPE2.3

cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:

External links

http://alas.aws.amazon.com/AL2023/ALAS-2023-127.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) NULL pointer dereference

EUVDB-ID: #VU93858

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-2023-52646

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to NULL pointer dereference within the aio_ring_mremap() function in fs/aio.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Update the affected packages:

aarch64:
    perf-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-tools-debuginfo-6.1.15-28.43.amzn2023.aarch64
    bpftool-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-tools-6.1.15-28.43.amzn2023.aarch64
    python3-perf-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-livepatch-6.1.15-28.43-1.0-0.amzn2023.aarch64
    python3-perf-6.1.15-28.43.amzn2023.aarch64
    kernel-tools-devel-6.1.15-28.43.amzn2023.aarch64
    kernel-libbpf-6.1.15-28.43.amzn2023.aarch64
    kernel-libbpf-static-6.1.15-28.43.amzn2023.aarch64
    kernel-libbpf-devel-6.1.15-28.43.amzn2023.aarch64
    bpftool-6.1.15-28.43.amzn2023.aarch64
    perf-6.1.15-28.43.amzn2023.aarch64
    kernel-headers-6.1.15-28.43.amzn2023.aarch64
    kernel-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-6.1.15-28.43.amzn2023.aarch64
    kernel-debuginfo-common-aarch64-6.1.15-28.43.amzn2023.aarch64
    kernel-devel-6.1.15-28.43.amzn2023.aarch64

src:
    kernel-6.1.15-28.43.amzn2023.src

x86_64:
    python3-perf-6.1.15-28.43.amzn2023.x86_64
    bpftool-6.1.15-28.43.amzn2023.x86_64
    kernel-libbpf-devel-6.1.15-28.43.amzn2023.x86_64
    kernel-tools-debuginfo-6.1.15-28.43.amzn2023.x86_64
    bpftool-debuginfo-6.1.15-28.43.amzn2023.x86_64
    kernel-livepatch-6.1.15-28.43-1.0-0.amzn2023.x86_64
    kernel-libbpf-6.1.15-28.43.amzn2023.x86_64
    python3-perf-debuginfo-6.1.15-28.43.amzn2023.x86_64
    perf-6.1.15-28.43.amzn2023.x86_64
    kernel-tools-6.1.15-28.43.amzn2023.x86_64
    kernel-libbpf-static-6.1.15-28.43.amzn2023.x86_64
    perf-debuginfo-6.1.15-28.43.amzn2023.x86_64
    kernel-tools-devel-6.1.15-28.43.amzn2023.x86_64
    kernel-headers-6.1.15-28.43.amzn2023.x86_64
    kernel-debuginfo-6.1.15-28.43.amzn2023.x86_64
    kernel-6.1.15-28.43.amzn2023.x86_64
    kernel-debuginfo-common-x86_64-6.1.15-28.43.amzn2023.x86_64
    kernel-devel-6.1.15-28.43.amzn2023.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: before 6.1.15-28.43

CPE2.3

cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:

External links

http://alas.aws.amazon.com/AL2023/ALAS-2023-127.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) Use-after-free

EUVDB-ID: #VU90064

Risk: Low

CVSSv3.1: 7.7 [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-2023-52707

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 psi_trigger_destroy() function in kernel/sched/psi.c. A local user can escalate privileges on the system.

Mitigation

Update the affected packages:

aarch64:
    perf-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-tools-debuginfo-6.1.15-28.43.amzn2023.aarch64
    bpftool-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-tools-6.1.15-28.43.amzn2023.aarch64
    python3-perf-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-livepatch-6.1.15-28.43-1.0-0.amzn2023.aarch64
    python3-perf-6.1.15-28.43.amzn2023.aarch64
    kernel-tools-devel-6.1.15-28.43.amzn2023.aarch64
    kernel-libbpf-6.1.15-28.43.amzn2023.aarch64
    kernel-libbpf-static-6.1.15-28.43.amzn2023.aarch64
    kernel-libbpf-devel-6.1.15-28.43.amzn2023.aarch64
    bpftool-6.1.15-28.43.amzn2023.aarch64
    perf-6.1.15-28.43.amzn2023.aarch64
    kernel-headers-6.1.15-28.43.amzn2023.aarch64
    kernel-debuginfo-6.1.15-28.43.amzn2023.aarch64
    kernel-6.1.15-28.43.amzn2023.aarch64
    kernel-debuginfo-common-aarch64-6.1.15-28.43.amzn2023.aarch64
    kernel-devel-6.1.15-28.43.amzn2023.aarch64

src:
    kernel-6.1.15-28.43.amzn2023.src

x86_64:
    python3-perf-6.1.15-28.43.amzn2023.x86_64
    bpftool-6.1.15-28.43.amzn2023.x86_64
    kernel-libbpf-devel-6.1.15-28.43.amzn2023.x86_64
    kernel-tools-debuginfo-6.1.15-28.43.amzn2023.x86_64
    bpftool-debuginfo-6.1.15-28.43.amzn2023.x86_64
    kernel-livepatch-6.1.15-28.43-1.0-0.amzn2023.x86_64
    kernel-libbpf-6.1.15-28.43.amzn2023.x86_64
    python3-perf-debuginfo-6.1.15-28.43.amzn2023.x86_64
    perf-6.1.15-28.43.amzn2023.x86_64
    kernel-tools-6.1.15-28.43.amzn2023.x86_64
    kernel-libbpf-static-6.1.15-28.43.amzn2023.x86_64
    perf-debuginfo-6.1.15-28.43.amzn2023.x86_64
    kernel-tools-devel-6.1.15-28.43.amzn2023.x86_64
    kernel-headers-6.1.15-28.43.amzn2023.x86_64
    kernel-debuginfo-6.1.15-28.43.amzn2023.x86_64
    kernel-6.1.15-28.43.amzn2023.x86_64
    kernel-debuginfo-common-x86_64-6.1.15-28.43.amzn2023.x86_64
    kernel-devel-6.1.15-28.43.amzn2023.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

kernel: before 6.1.15-28.43

CPE2.3

cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:

External links

http://alas.aws.amazon.com/AL2023/ALAS-2023-127.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.