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High 1 exploited CVE ALAS2-2025-2800 5 CVEs

Important: kernel security update (Amazon Linux 2)

Published Mar 13, 2025 · Updated Mar 25, 2025

Ecosystem: Amazon Linux

Summary

Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2025-21702: In the Linux kernel, the following vulnerability has been resolved: pfifo_tail_enqueue: Drop new packet when sch->limit == 0 CVE-2024-53179: In the Linux kernel, the following vulnerability has been resolved: smb: client: fix use-after-free of signing key CVE-2024-50302: In the Linux kernel, the following vulnerability has been resolved: HID: core: zero-initialize the report buffer Since the report buffer is used by all kinds of drivers in various ways, let's zero-initialize it during allocation to make sure that it can't be ever used to leak kernel memory via specially-crafted report. CVE-2024-49960: In the Linux kernel, the following vulnerability has been resolved: ext4: fix timer use-after-free on failed mount CVE-2024-35870: In the Linux kernel, the following vulnerability has been resolved: smb: client: fix UAF in smb2_reconnect_server()

Fixed packages 14

ReleasePackageFixed in
Amazon Linux · 2 kernel 0:4.14.355-275.603.amzn2
Amazon Linux · 2 kernel-debuginfo 0:4.14.355-275.603.amzn2
Amazon Linux · 2 kernel-debuginfo-common-aarch64 0:4.14.355-275.603.amzn2
Amazon Linux · 2 kernel-debuginfo-common-x86_64 0:4.14.355-275.603.amzn2
Amazon Linux · 2 kernel-devel 0:4.14.355-275.603.amzn2
Amazon Linux · 2 kernel-headers 0:4.14.355-275.603.amzn2
Amazon Linux · 2 kernel-livepatch-4.14.355-275.603 0:1.0-0.amzn2
Amazon Linux · 2 kernel-tools 0:4.14.355-275.603.amzn2
Amazon Linux · 2 kernel-tools-debuginfo 0:4.14.355-275.603.amzn2
Amazon Linux · 2 kernel-tools-devel 0:4.14.355-275.603.amzn2
Amazon Linux · 2 perf 0:4.14.355-275.603.amzn2
Amazon Linux · 2 perf-debuginfo 0:4.14.355-275.603.amzn2
Amazon Linux · 2 python-perf 0:4.14.355-275.603.amzn2
Amazon Linux · 2 python-perf-debuginfo 0:4.14.355-275.603.amzn2

Vulnerabilities 5

  • Medium 5.5
    CVE-2024-50302 Exploited

    HID: core: zero-initialize the report buffer

    In the Linux kernel, the following vulnerability has been resolved: HID: core: zero-initialize the report buffer Since the report buffer is used by all kinds of drivers in various ways, let's zero-initialize it during allocation to make sure that it can't be …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
    KEV Mar 4, 2025
  • Critical 9.8
    CVE-2024-35870

    smb: client: fix UAF in smb2_reconnect_server()

    In the Linux kernel, the following vulnerability has been resolved: smb: client: fix UAF in smb2_reconnect_server() The UAF bug is due to smb2_reconnect_server() accessing a session that is already being teared down by another thread that is executing __cifs_…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Critical 9.8
    CVE-2024-53179

    smb: client: fix use-after-free of signing key

    In the Linux kernel, the following vulnerability has been resolved: smb: client: fix use-after-free of signing key Customers have reported use-after-free in @ses->auth_key.response with SMB2.1 + sign mounts which occurs due to following race: task A task B ci…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2024-49960

    ext4: fix timer use-after-free on failed mount

    In the Linux kernel, the following vulnerability has been resolved: ext4: fix timer use-after-free on failed mount Syzbot has found an ODEBUG bug in ext4_fill_super The del_timer_sync function cancels the s_err_report timer, which reminds about filesystem err…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2025-21702

    pfifo_tail_enqueue: Drop new packet when sch->limit == 0

    In the Linux kernel, the following vulnerability has been resolved: pfifo_tail_enqueue: Drop new packet when sch->limit == 0 Expected behaviour: In case we reach scheduler's limit, pfifo_tail_enqueue() will drop a packet in scheduler's queue and decrease sche…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2024-35870.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2024-49960.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2024-50302.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2024-53179.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2025-21702.html