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ALSA-2025:19409 — Moderate: kernel security update

Affected: AlmaLinux:9: kernel, AlmaLinux:9: kernel-64k, AlmaLinux:9: kernel-64k-core, AlmaLinux:9: kernel-64k-debug, AlmaLinux:9: kernel-64k-debug-core, AlmaLinux:9: kernel-64k-debug-devel, AlmaLinux:9: kernel-64k-debug-devel-matched, AlmaLinux:9: kernel-64k-debug-modules, AlmaLinux:9: kernel-64k-debug-modules-core, AlmaLinux:9: kernel-64k-debug-modules-extra and 66 more

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

Security Fix(es):

* kernel: ipv6: sr: Fix MAC comparison to be constant-time (CVE-2025-39702) * kernel: fs: fix UAF/GPF bug in nilfs_mdt_destroy (CVE-2022-50367) * kernel: crypto: xts - Handle EBUSY correctly (CVE-2023-53494)

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.

bdu:2026-02180

certfr-2025-avi-0895 — De multiples vulnérabilités ont été découvertes dans le noyau Linux de SUSE. Certaines d'entre elles permettent à un at…

certfr-2025-avi-0895

EUVD-2026-344902

fkie_cve-2022-50367

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_metadata_file_inode() returns true and nilfs_free_inode() wrongly calls nilfs_mdt_destroy(), which frees the uninitialized inode->i_private and leads to crashes(e.g., UAF/GPF).

Fix this by moving security_inode_alloc just prior to this_cpu_inc(nr_inodes)

GHSA-4hcm-79j9-x472

In the Linux kernel, the following vulnerability has been resolved:

fs: fix UAF/GPF bug in nilfs_mdt_destroy

Fix this by moving security_inode_alloc just prior to this_cpu_inc(nr_inodes)

RHSA-2025:19409 — Red Hat Security Advisory: kernel security update

kernel: fs: fix UAF/GPF bug in nilfs_mdt_destroy kernel: crypto: xts - Handle EBUSY correctly kernel: ipv6: sr: Fix MAC comparison to be constant-time

RHSA-2025:19886 — Red Hat Security Advisory: kernel security update

kernel: fs: fix UAF/GPF bug in nilfs_mdt_destroy kernel: mm: fix zswap writeback race condition kernel: pstore/ram: Check start of empty przs during init kernel: mm: kmem: fix a NULL pointer dereference in obj_stock_flush_required() kernel: ethtool: check device is present when getting link settings kernel: NFS: Fix filehandle bounds checking in nfs_fh_to_dentry()

SUSE-SU-2025:03613-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

UBUNTU-CVE-2022-50367

Affected: Ubuntu:Pro:14.04:LTS: linux-azure, Ubuntu:Pro:14.04:LTS: linux, Ubuntu:Pro:14.04:LTS: linux-aws, Ubuntu:Pro:14.04:LTS: linux-lts-xenial, Ubuntu:Pro:16.04:LTS: linux-aws-hwe, Ubuntu:Pro:16.04:LTS: linux-azure, Ubuntu:Pro:16.04:LTS: linux-gcp, Ubuntu:Pro:16.04:LTS: linux-hwe, Ubuntu:Pro:16.04:LTS: linux-oracle, Ubuntu:Pro:16.04:LTS: linux and 153 more

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_metadata_file_inode() returns true and nilfs_free_inode() wrongly calls nilfs_mdt_destroy(), which frees the uninitialized inode->i_private and leads to crashes(e.g., UAF/GPF). Fix this by moving security_inode_alloc just prior to this_cpu_inc(nr_inodes)

WID-SEC-W-2025-2087 — Linux Kernel: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen oder nicht näher beschriebene Auswirkungen zu erzielen.