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OpenAdvisories
High ALAS2-2024-2391 11 CVEs

Important: kernel security update (Amazon Linux 2)

Published Jan 3, 2024 · Updated Dec 5, 2024

Ecosystem: Amazon Linux

Summary

Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2024-0584: A use-after-free issue was found in igmp_start_timer in net/ipv4/igmp.c in the network sub-component in the Linux Kernel. This flaw allows a local user to observe a refcnt use-after-free issue when receiving an igmp query packet, leading to a kernel information leak. CVE-2023-6932: A use-after-free vulnerability in the Linux kernel's ipv4: igmp component can be exploited to achieve local privilege escalation. A race condition can be exploited to cause a timer be mistakenly registered on a RCU read locked object which is freed by another thread. We recommend upgrading past commit e2b706c691905fe78468c361aaabc719d0a496f1. CVE-2023-52881: In the Linux kernel, the following vulnerability has been resolved: tcp: do not accept ACK of bytes we never sent CVE-2023-52819: In the Linux kernel, the following vulnerability has been resolved: drm/amd: Fix UBSAN array-index-out-of-bounds for Polaris and Tonga CVE-2023-52818: In the Linux kernel, the following vulnerability has been resolved: drm/amd: Fix UBSAN array-index-out-of-bounds for SMU7 CVE-2023-52813: In the Linux kernel, the following vulnerability has been resolved: crypto: pcrypt - Fix hungtask for PADATA_RESET CVE-2023-52809: In the Linux kernel, the following vulnerability has been resolved: scsi: libfc: Fix potential NULL pointer dereference in fc_lport_ptp_setup() CVE-2023-52759: In the Linux kernel, the following vulnerability has been resolved: gfs2: ignore negated quota changes CVE-2023-52340: When a router encounters an IPv6 packet too big to transmit to the next-hop, it returns an ICMP6 "Packet Too Big" (PTB) message to the sender. The sender caches this updated Maximum Transmission Unit (MTU) so it knows not to exceed this value when subsequently routing to the same host. In Linux kernels prior to 6.3, garbage collection is run on the IPv6 Destination Route Cache if the number of entries exceeds a threshold when adding the destination to the cache. This garbage collection examines every entry in the cache while holding a lock. In these affected kernel versions, a flood of the IPv6 ICMP6 PTB messages could cause high lock contention and increased CPU usage, leading to a Denial-of-Service. The fix backports the garbage collection improvements from Linux kernel 6.3 by bringing the IPv6 code closer to the IPv4 code, which does not have this issue. Patch: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=af6d10345ca76670c1b7c37799f0d5576ccef277 CVE-2023-39198: A race condition leading to a use-after-free issue was found in the QXL driver in the Linux kernel. CVE-2023-0590: A use-after-free flaw was found in qdisc_graft in net/sched/sch_api.c in the Linux Kernel due to a race problem. This flaw leads to a denial of service issue.

Fixed packages 14

ReleasePackageFixed in
Amazon Linux · 2 kernel 0:4.14.334-252.552.amzn2
Amazon Linux · 2 kernel-debuginfo 0:4.14.334-252.552.amzn2
Amazon Linux · 2 kernel-debuginfo-common-aarch64 0:4.14.334-252.552.amzn2
Amazon Linux · 2 kernel-debuginfo-common-x86_64 0:4.14.334-252.552.amzn2
Amazon Linux · 2 kernel-devel 0:4.14.334-252.552.amzn2
Amazon Linux · 2 kernel-headers 0:4.14.334-252.552.amzn2
Amazon Linux · 2 kernel-livepatch-4.14.334-252.552 0:1.0-0.amzn2
Amazon Linux · 2 kernel-tools 0:4.14.334-252.552.amzn2
Amazon Linux · 2 kernel-tools-debuginfo 0:4.14.334-252.552.amzn2
Amazon Linux · 2 kernel-tools-devel 0:4.14.334-252.552.amzn2
Amazon Linux · 2 perf 0:4.14.334-252.552.amzn2
Amazon Linux · 2 perf-debuginfo 0:4.14.334-252.552.amzn2
Amazon Linux · 2 python-perf 0:4.14.334-252.552.amzn2
Amazon Linux · 2 python-perf-debuginfo 0:4.14.334-252.552.amzn2

Vulnerabilities 11

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2023-0590.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2023-39198.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2023-52340.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2023-52759.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2023-52809.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2023-52813.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2023-52818.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2023-52819.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2023-52881.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2023-6932.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2024-0584.html