Vulmon
Amazon Linux 2 Security Advisory: ALASKERNEL-5.15-2023-028
Advisory Release Date: 2023-10-12 17:29 Pacific
Advisory Updated Date: 2023-10-17 22:14 Pacific
FAQs regarding Amazon Linux ALAS/CVE Severity
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.
Due to a race condition between nf_tables netlink control plane transaction and nft_set element garbage collection, it is possible to underflow the reference counter causing a use-after-free vulnerability.
We recommend upgrading past commit 3e91b0ebd994635df2346353322ac51ce84ce6d8. (CVE-2023-4244)
ipv4: fix null-deref in ipv4_link_failure
NOTE: https://www.openwall.com/lists/oss-security/2023/10/02/8
NOTE: https://git.kernel.org/linus/0113d9c9d1ccc07f5a3710dac4aa24b6d711278c (6.6-rc3) (CVE-2023-42754)
A flaw was found in the Netfilter subsystem of the Linux kernel. A race condition between IPSET_CMD_ADD and IPSET_CMD_SWAP can lead to a kernel panic due to the invocation of `__ip_set_put` on a wrong `set`. This issue may allow a local user to crash the system. (CVE-2023-42756)
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.
Addition and removal of rules from chain bindings within the same transaction causes leads to use-after-free.
We recommend upgrading past commit f15f29fd4779be8a418b66e9d52979bb6d6c2325. (CVE-2023-5197)
Affected Packages:
kernel
Issue Correction:
Run yum update kernel to update your system.
aarch64:
kernel-5.15.134-87.145.amzn2.aarch64
kernel-headers-5.15.134-87.145.amzn2.aarch64
kernel-debuginfo-common-aarch64-5.15.134-87.145.amzn2.aarch64
perf-5.15.134-87.145.amzn2.aarch64
perf-debuginfo-5.15.134-87.145.amzn2.aarch64
python-perf-5.15.134-87.145.amzn2.aarch64
python-perf-debuginfo-5.15.134-87.145.amzn2.aarch64
kernel-tools-5.15.134-87.145.amzn2.aarch64
kernel-tools-devel-5.15.134-87.145.amzn2.aarch64
kernel-tools-debuginfo-5.15.134-87.145.amzn2.aarch64
bpftool-5.15.134-87.145.amzn2.aarch64
bpftool-debuginfo-5.15.134-87.145.amzn2.aarch64
kernel-devel-5.15.134-87.145.amzn2.aarch64
kernel-debuginfo-5.15.134-87.145.amzn2.aarch64
kernel-livepatch-5.15.134-87.145-1.0-0.amzn2.aarch64
i686:
kernel-headers-5.15.134-87.145.amzn2.i686
src:
kernel-5.15.134-87.145.amzn2.src
x86_64:
kernel-5.15.134-87.145.amzn2.x86_64
kernel-headers-5.15.134-87.145.amzn2.x86_64
kernel-debuginfo-common-x86_64-5.15.134-87.145.amzn2.x86_64
perf-5.15.134-87.145.amzn2.x86_64
perf-debuginfo-5.15.134-87.145.amzn2.x86_64
python-perf-5.15.134-87.145.amzn2.x86_64
python-perf-debuginfo-5.15.134-87.145.amzn2.x86_64
kernel-tools-5.15.134-87.145.amzn2.x86_64
kernel-tools-devel-5.15.134-87.145.amzn2.x86_64
kernel-tools-debuginfo-5.15.134-87.145.amzn2.x86_64
bpftool-5.15.134-87.145.amzn2.x86_64
bpftool-debuginfo-5.15.134-87.145.amzn2.x86_64
kernel-devel-5.15.134-87.145.amzn2.x86_64
kernel-debuginfo-5.15.134-87.145.amzn2.x86_64
kernel-livepatch-5.15.134-87.145-1.0-0.amzn2.x86_64