vulnerability
Amazon Linux AMI 2: CVE-2023-4622: Security patch for kernel, kernel-livepatch-4.14.320-243.544, kernel-livepatch-4.14.322-244.536, kernel-livepatch-4.14.322-244.539, kernel-livepatch-4.14.322-246.539, kernel-livepatch-5.10.186-179.751 (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:M/Au:S/C:C/I:C/A:C) | Sep 6, 2023 | Oct 4, 2023 | Feb 20, 2025 |
Severity
7
CVSS
(AV:L/AC:M/Au:S/C:C/I:C/A:C)
Published
Sep 6, 2023
Added
Oct 4, 2023
Modified
Feb 20, 2025
Description
A use-after-free vulnerability in the Linux kernel's af_unix component can be exploited to achieve local privilege escalation.
The unix_stream_sendpage() function tries to add data to the last skb in the peer's recv queue without locking the queue. Thus there is a race where unix_stream_sendpage() could access an skb locklessly that is being released by garbage collection, resulting in use-after-free.
We recommend upgrading past commit 790c2f9d15b594350ae9bca7b236f2b1859de02c.
Solution(s)
amazon-linux-ami-2-upgrade-bpftoolamazon-linux-ami-2-upgrade-bpftool-debuginfoamazon-linux-ami-2-upgrade-kernelamazon-linux-ami-2-upgrade-kernel-debuginfoamazon-linux-ami-2-upgrade-kernel-debuginfo-common-aarch64amazon-linux-ami-2-upgrade-kernel-debuginfo-common-x86_64amazon-linux-ami-2-upgrade-kernel-develamazon-linux-ami-2-upgrade-kernel-headersamazon-linux-ami-2-upgrade-kernel-livepatch-4-14-320-243-544amazon-linux-ami-2-upgrade-kernel-livepatch-4-14-320-243-544-debuginfoamazon-linux-ami-2-upgrade-kernel-livepatch-4-14-322-244-536amazon-linux-ami-2-upgrade-kernel-livepatch-4-14-322-244-536-debuginfoamazon-linux-ami-2-upgrade-kernel-livepatch-4-14-322-244-539amazon-linux-ami-2-upgrade-kernel-livepatch-4-14-322-244-539-debuginfoamazon-linux-ami-2-upgrade-kernel-livepatch-4-14-322-246-539amazon-linux-ami-2-upgrade-kernel-livepatch-4-14-322-246-539-debuginfoamazon-linux-ami-2-upgrade-kernel-livepatch-4-14-326-245-539amazon-linux-ami-2-upgrade-kernel-livepatch-5-10-186-179-751amazon-linux-ami-2-upgrade-kernel-livepatch-5-10-186-179-751-debuginfoamazon-linux-ami-2-upgrade-kernel-livepatch-5-10-192-182-736amazon-linux-ami-2-upgrade-kernel-livepatch-5-15-128-80-144amazon-linux-ami-2-upgrade-kernel-toolsamazon-linux-ami-2-upgrade-kernel-tools-debuginfoamazon-linux-ami-2-upgrade-kernel-tools-develamazon-linux-ami-2-upgrade-perfamazon-linux-ami-2-upgrade-perf-debuginfoamazon-linux-ami-2-upgrade-python-perfamazon-linux-ami-2-upgrade-python-perf-debuginfo
References
- AMAZON-AL2/ALAS-2023-2264
- AMAZON-AL2/ALASKERNEL-5.10-2023-039
- AMAZON-AL2/ALASKERNEL-5.15-2023-026
- AMAZON-AL2/ALASKERNEL-5.4-2023-053
- AMAZON-AL2/ALASLIVEPATCH-2023-151
- AMAZON-AL2/ALASLIVEPATCH-2023-152
- AMAZON-AL2/ALASLIVEPATCH-2023-153
- AMAZON-AL2/ALASLIVEPATCH-2023-154
- AMAZON-AL2/ALASLIVEPATCH-2023-155
- CVE-2023-4622
- https://attackerkb.com/topics/CVE-2023-4622
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