Red Hat Security Advisory: kernel security update

Fixed packages 142

Vulnerabilities 7

• 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
  Apr 3, 2025
• High 8.4
  CVE-2025-22121

  ext4: fix out-of-bound read in ext4_xattr_inode_dec_ref_all()

  In the Linux kernel, the following vulnerability has been resolved: ext4: fix out-of-bound read in ext4_xattr_inode_dec_ref_all() There's issue as follows: BUG: KASAN: use-after-free in ext4_xattr_inode_dec_ref_all+0x6ff/0x790 Read of size 4 at addr ffff88807…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Apr 16, 2025
• High 7.8
  CVE-2025-21759

  ipv6: mcast: extend RCU protection in igmp6_send()

  In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: extend RCU protection in igmp6_send() igmp6_send() can be called without RTNL or RCU being held. Extend RCU protection so that we can safely fetch the net pointer and avoid a pot…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Feb 27, 2025
• High 7.8
  CVE-2025-23150

  ext4: fix off-by-one error in do_split

  In the Linux kernel, the following vulnerability has been resolved: ext4: fix off-by-one error in do_split Syzkaller detected a use-after-free issue in ext4_insert_dentry that was caused by out-of-bounds access due to incorrect splitting in do_split. BUG: KAS…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  May 1, 2025
• High 7.8
  CVE-2025-37738

  ext4: ignore xattrs past end

  In the Linux kernel, the following vulnerability has been resolved: ext4: ignore xattrs past end Once inside 'ext4_xattr_inode_dec_ref_all' we should ignore xattrs entries past the 'end' entry. This fixes the following KASAN reported issue: ==================…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  May 1, 2025
• High 7.8
  CVE-2025-38110

  net/mdiobus: Fix potential out-of-bounds clause 45 read/write access

  In the Linux kernel, the following vulnerability has been resolved: net/mdiobus: Fix potential out-of-bounds clause 45 read/write access When using publicly available tools like 'mdio-tools' to read/write data from/to network interface and its PHY via C45 (cl…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jul 3, 2025
• Unscored —
  CVE-2023-52933

  Squashfs: fix handling and sanity checking of xattr_ids count

  In the Linux kernel, the following vulnerability has been resolved: Squashfs: fix handling and sanity checking of xattr_ids count A Sysbot [1] corrupted filesystem exposes two flaws in the handling and sanity checking of the xattr_ids count in the filesystem.…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  Mar 27, 2025

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2348596
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2355476
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2357142
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2360199
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2363268
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2363305
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2376035
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_11245.json
• report
  https://access.redhat.com/security/cve/CVE-2023-52933
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-52933
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-52933
• article
  https://lore.kernel.org/linux-cve-announce/2025032720-CVE-2023-52933-f292@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-21759
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-21759
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-21759
• article
  https://kernelcve.org/list/?q=CVE-2025-21759
• article
  https://lore.kernel.org/linux-cve-announce/2025022604-CVE-2025-21759-ad7c@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-22004
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-22004
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-22004
• article
  https://lore.kernel.org/linux-cve-announce/2025040349-CVE-2025-22004-64f9@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-22121
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-22121
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-22121
• article
  https://lore.kernel.org/linux-cve-announce/2025041628-CVE-2025-22121-52fd@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-23150
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-23150
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-23150
• article
  https://lore.kernel.org/linux-cve-announce/2025050127-CVE-2025-23150-15b8@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-37738
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-37738
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-37738
• article
  https://lore.kernel.org/linux-cve-announce/2025050132-CVE-2025-37738-deb1@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-38110
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38110
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38110
• article
  https://lore.kernel.org/linux-cve-announce/2025070324-CVE-2025-38110-a9c0@gregkh/T