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High RLSA-2026:38492 3 CVEs

Important: kernel security update

Published Jul 14, 2026 · Updated Jul 14, 2026

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: md/bitmap: fix GPF in write_page caused by resize race (CVE-2026-43163)

* kernel: rtmutex: Use waiter::task instead of current in remove_waiter() (CVE-2026-43499)

* kernel: futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock (CVE-2026-53166)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 1

ReleasePackageFixed in
Rocky Linux · 10 kernel 0:6.12.0-211.33.1.el10_2

Vulnerabilities 3

  • High 7.8
    CVE-2026-43499 Public exploit

    rtmutex: Use waiter::task instead of current in remove_waiter()

    In the Linux kernel, the following vulnerability has been resolved: rtmutex: Use waiter::task instead of current in remove_waiter() remove_waiter() is used by the slowlock paths, but it is also used for proxy-lock rollback in rt_mutex_start_proxy_lock() when …

  • Unscored —

    md/bitmap: fix GPF in write_page caused by resize race

    In the Linux kernel, the following vulnerability has been resolved: md/bitmap: fix GPF in write_page caused by resize race A General Protection Fault occurs in write_page() during array resize: RIP: 0010:write_page+0x22b/0x3c0 [md_mod] This is a use-after-fre…

  • Unscored —
    CVE-2026-53166 Rejected

    This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2480453
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2467059
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2492805