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Critical USN-7406-2 4 CVEs

linux-fips, linux-aws-fips, linux-gcp-fips vulnerabilities

Published Apr 2, 2025 · Updated Aug 6, 2026

Summary

Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- GPU drivers;
- SMB network file system;
- Network namespace;
- Networking core;
(CVE-2024-26928, CVE-2024-56658, CVE-2024-35864, CVE-2024-57798)

Fixed packages 3

ReleasePackageFixed in
Ubuntu · Pro FIPS-updates 22.04 LTS Pro:FIPS-updates:22.04:LTS linux-aws-fips 5.15.0-1081.88+fips1
Ubuntu · Pro FIPS-updates 22.04 LTS Pro:FIPS-updates:22.04:LTS linux-fips 5.15.0-136.147+fips1
Ubuntu · Pro FIPS-updates 22.04 LTS Pro:FIPS-updates:22.04:LTS linux-gcp-fips 5.15.0-1080.89+fips1

Vulnerabilities 4

  • Critical 9.8

    smb: client: fix potential UAF in smb2_is_valid_lease_break()

    In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential UAF in smb2_is_valid_lease_break() Skip sessions that are being teared down (status == SES_EXITING) to avoid UAF.

  • High 7.8

    net: defer final 'struct net' free in netns dismantle

    In the Linux kernel, the following vulnerability has been resolved: net: defer final 'struct net' free in netns dismantle Ilya reported a slab-use-after-free in dst_destroy [1] Issue is in xfrm6_net_init() and xfrm4_net_init() : They copy xfrm[46]_dst_ops_tem…

  • High 7.8

    drm/dp_mst: Ensure mst_primary pointer is valid in drm_dp_mst_handle_up_req()

    In the Linux kernel, the following vulnerability has been resolved: drm/dp_mst: Ensure mst_primary pointer is valid in drm_dp_mst_handle_up_req() While receiving an MST up request message from one thread in drm_dp_mst_handle_up_req(), the MST topology could b…

  • Unscored —

    smb: client: fix potential UAF in cifs_debug_files_proc_show()

    In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential UAF in cifs_debug_files_proc_show() Skip sessions that are being teared down (status == SES_EXITING) to avoid UAF.

References

  • report
    https://ubuntu.com/security/CVE-2024-26928
  • report
    https://ubuntu.com/security/CVE-2024-35864
  • report
    https://ubuntu.com/security/CVE-2024-56658
  • report
    https://ubuntu.com/security/CVE-2024-57798