Skip to content
OpenAdvisories
Medium RLSA-2025:19931 3 CVEs

Moderate: kernel security update

Published Nov 13, 2025 · Updated Nov 13, 2025

Summary

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

Security Fix(es):

* kernel: x86/vmscape: Add conditional IBPB mitigation (CVE-2025-40300)

* kernel: mm: fix zswap writeback race condition (CVE-2023-53178)

* kernel: fs: fix UAF/GPF bug in nilfs_mdt_destroy (CVE-2022-50367)

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 · 8 kernel 0:4.18.0-553.83.1.el8_10

Vulnerabilities 3

  • High 7.8

    fs: fix UAF/GPF bug in nilfs_mdt_destroy

    In the Linux kernel, the following vulnerability has been resolved: fs: fix UAF/GPF bug in nilfs_mdt_destroy In alloc_inode, inode_init_always() could return -ENOMEM if security_inode_alloc() fails, which causes inode->i_private uninitialized. Then nilfs_is_m…

  • High 7.8

    mm: fix zswap writeback race condition

    In the Linux kernel, the following vulnerability has been resolved: mm: fix zswap writeback race condition The zswap writeback mechanism can cause a race condition resulting in memory corruption, where a swapped out page gets swapped in with data that was wri…

  • Unscored —

    x86/vmscape: Add conditional IBPB mitigation

    In the Linux kernel, the following vulnerability has been resolved: x86/vmscape: Add conditional IBPB mitigation VMSCAPE is a vulnerability that exploits insufficient branch predictor isolation between a guest and a userspace hypervisor (like QEMU). Existing …

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2394627
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2395358
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2396114