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OpenAdvisories
High ALAS2-2025-2854 6 CVEs

Important: kernel security update (Amazon Linux 2)

Published May 8, 2025 · Updated Aug 5, 2025

Ecosystem: Amazon Linux

Summary

Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2025-38323: In the Linux kernel, the following vulnerability has been resolved: net: atm: add lec_mutex CVE-2025-22004: In the Linux kernel, the following vulnerability has been resolved: net: atm: fix use after free in lec_send() CVE-2025-21920: In the Linux kernel, the following vulnerability has been resolved: vlan: enforce underlying device type CVE-2022-49465: In the Linux kernel, the following vulnerability has been resolved: blk-throttle: Set BIO_THROTTLED when bio has been throttled CVE-2022-49413: In the Linux kernel, the following vulnerability has been resolved: bfq: Update cgroup information before merging bio CVE-2022-49168: In the Linux kernel, the following vulnerability has been resolved: btrfs: do not clean up repair bio if submit fails

Fixed packages 14

ReleasePackageFixed in
Amazon Linux · 2 kernel 0:4.14.355-277.643.amzn2
Amazon Linux · 2 kernel-debuginfo 0:4.14.355-277.643.amzn2
Amazon Linux · 2 kernel-debuginfo-common-aarch64 0:4.14.355-277.643.amzn2
Amazon Linux · 2 kernel-debuginfo-common-x86_64 0:4.14.355-277.643.amzn2
Amazon Linux · 2 kernel-devel 0:4.14.355-277.643.amzn2
Amazon Linux · 2 kernel-headers 0:4.14.355-277.643.amzn2
Amazon Linux · 2 kernel-livepatch-4.14.355-277.643 0:1.0-0.amzn2
Amazon Linux · 2 kernel-tools 0:4.14.355-277.643.amzn2
Amazon Linux · 2 kernel-tools-debuginfo 0:4.14.355-277.643.amzn2
Amazon Linux · 2 kernel-tools-devel 0:4.14.355-277.643.amzn2
Amazon Linux · 2 perf 0:4.14.355-277.643.amzn2
Amazon Linux · 2 perf-debuginfo 0:4.14.355-277.643.amzn2
Amazon Linux · 2 python-perf 0:4.14.355-277.643.amzn2
Amazon Linux · 2 python-perf-debuginfo 0:4.14.355-277.643.amzn2

Vulnerabilities 6

  • High 8.6
    CVE-2025-22004

    net: atm: fix use after free in lec_send()

    In the Linux kernel, the following vulnerability has been resolved: net: atm: fix use after free in lec_send() The ->send() operation frees skb so save the length before calling ->send() to avoid a use after free.

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2022-49168

    btrfs: do not clean up repair bio if submit fails

    In the Linux kernel, the following vulnerability has been resolved: btrfs: do not clean up repair bio if submit fails The submit helper will always run bio_endio() on the bio if it fails to submit, so cleaning up the bio just leads to a variety of use-after-f…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2022-49413

    bfq: Update cgroup information before merging bio

    In the Linux kernel, the following vulnerability has been resolved: bfq: Update cgroup information before merging bio When the process is migrated to a different cgroup (or in case of writeback just starts submitting bios associated with a different cgroup) b…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2022-49465

    blk-throttle: Set BIO_THROTTLED when bio has been throttled

    In the Linux kernel, the following vulnerability has been resolved: blk-throttle: Set BIO_THROTTLED when bio has been throttled 1.In current process, all bio will set the BIO_THROTTLED flag after __blk_throtl_bio(). 2.If bio needs to be throttled, it will sta…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.1
    CVE-2025-21920

    vlan: enforce underlying device type

    In the Linux kernel, the following vulnerability has been resolved: vlan: enforce underlying device type Currently, VLAN devices can be created on top of non-ethernet devices. Besides the fact that it doesn't make much sense, this also causes a bug which leak…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2025-38323

    net: atm: add lec_mutex

    In the Linux kernel, the following vulnerability has been resolved: net: atm: add lec_mutex syzbot found its way in net/atm/lec.c, and found an error path in lecd_attach() could leave a dangling pointer in dev_lec[]. Add a mutex to protect dev_lecp[] uses fro…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2022-49168.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2022-49413.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2022-49465.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2025-21920.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2025-22004.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2025-38323.html