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OpenAdvisories
Critical USN-8013-2 2 CVEs

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

Published Feb 4, 2026 · Updated Nov 3, 2026

Ecosystem: Ubuntu

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:
- Cryptographic API;
- SMB network file system;
(CVE-2025-38561, CVE-2025-40019)

Fixed packages 4

ReleasePackageFixed in
Ubuntu · Pro FIPS-updates 22.04 LTS Pro:FIPS-updates:22.04:LTS linux-aws-fips 5.15.0-1099.106+fips1
Ubuntu · Pro FIPS-updates 22.04 LTS Pro:FIPS-updates:22.04:LTS linux-azure-fips 5.15.0-1103.112+fips1
Ubuntu · Pro FIPS-updates 22.04 LTS Pro:FIPS-updates:22.04:LTS linux-fips 5.15.0-168.178+fips1
Ubuntu · Pro FIPS-updates 22.04 LTS Pro:FIPS-updates:22.04:LTS linux-gcp-fips 5.15.0-1099.108+fips1

Vulnerabilities 2

  • Critical 9.8
    CVE-2025-38561 Public exploit

    ksmbd: fix Preauh_HashValue race condition

    In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix Preauh_HashValue race condition If client send multiple session setup requests to ksmbd, Preauh_HashValue race condition could happen. There is no need to free sess->Preauh_HashVal…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Unscored —
    CVE-2025-40019 Public exploit

    crypto: essiv - Check ssize for decryption and in-place encryption

    In the Linux kernel, the following vulnerability has been resolved: crypto: essiv - Check ssize for decryption and in-place encryption Move the ssize check to the start in essiv_aead_crypt so that it's also checked for decryption and in-place encryption.

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux

References

  • report
    https://ubuntu.com/security/CVE-2025-38561
  • report
    https://ubuntu.com/security/CVE-2025-40019