QSN-8656-1: Linux kernel (HWE) vulnerabilities
2026-08-20

Summary:
Several security issues were fixed in the Linux kernel.


Details:
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:
  - x86 architecture;
  - InfiniBand drivers;
  - Network drivers;
  - Mellanox network drivers;
  - File systems infrastructure;
  - IPv4 networking;
  - Network traffic control;
  - TCP network protocol;
  - B.A.T.M.A.N. meshing protocol;
  - IPv6 networking;
  - Multipath TCP;
  - Netfilter;
  - Open vSwitch;
  - RxRPC session sockets;
  - SCTP protocol;
  - SMC sockets;
(CVE-2026-43083, CVE-2026-43197, CVE-2026-43198, CVE-2026-43465,
CVE-2026-46242, CVE-2026-46325, CVE-2026-46331, CVE-2026-52914,
CVE-2026-52924, CVE-2026-52931, CVE-2026-53151, CVE-2026-53176,
CVE-2026-53212, CVE-2026-53215, CVE-2026-53224, CVE-2026-53225,
CVE-2026-53228, CVE-2026-53246, CVE-2026-53247, CVE-2026-53359,
CVE-2026-64531)


Affected QuantaStor releases:
  6.9.1.001 jammy: linux-modules-6.8.0-90-generic 6.8.0-90.91~22.04.1 (fixed in 6.8.0-138.138~22.04.1)
  6.9.1.001 jammy: linux-modules-extra-6.8.0-90-generic 6.8.0-90.91~22.04.1 (fixed in 6.8.0-138.138~22.04.1)
  6.9.0.464 jammy: linux-modules-6.8.0-90-generic 6.8.0-90.91~22.04.1 (fixed in 6.8.0-138.138~22.04.1)
  6.9.0.464 jammy: linux-modules-extra-6.8.0-90-generic 6.8.0-90.91~22.04.1 (fixed in 6.8.0-138.138~22.04.1)
  6.8.6.015 jammy: linux-modules-6.8.0-90-generic 6.8.0-90.91~22.04.1 (fixed in 6.8.0-138.138~22.04.1)
  6.8.6.015 jammy: linux-modules-extra-6.8.0-90-generic 6.8.0-90.91~22.04.1 (fixed in 6.8.0-138.138~22.04.1)
  6.8.5.018 jammy: linux-modules-6.8.0-90-generic 6.8.0-90.91~22.04.1 (fixed in 6.8.0-138.138~22.04.1)
  6.8.5.018 jammy: linux-modules-extra-6.8.0-90-generic 6.8.0-90.91~22.04.1 (fixed in 6.8.0-138.138~22.04.1)
  6.8.4.038 jammy: linux-modules-6.8.0-90-generic 6.8.0-90.91~22.04.1 (fixed in 6.8.0-138.138~22.04.1)
  6.8.4.038 jammy: linux-modules-extra-6.8.0-90-generic 6.8.0-90.91~22.04.1 (fixed in 6.8.0-138.138~22.04.1)
  6.8.3.018 jammy: linux-modules-6.8.0-90-generic 6.8.0-90.91~22.04.1 (fixed in 6.8.0-138.138~22.04.1)
  6.8.3.018 jammy: linux-modules-extra-6.8.0-90-generic 6.8.0-90.91~22.04.1 (fixed in 6.8.0-138.138~22.04.1)
  6.8.2.002 jammy: linux-modules-6.8.0-90-generic 6.8.0-90.91~22.04.1 (fixed in 6.8.0-138.138~22.04.1)
  6.8.2.002 jammy: linux-modules-extra-6.8.0-90-generic 6.8.0-90.91~22.04.1 (fixed in 6.8.0-138.138~22.04.1)
  6.8.1.007 jammy: linux-modules-6.8.0-90-generic 6.8.0-90.91~22.04.1 (fixed in 6.8.0-138.138~22.04.1)
  6.8.1.007 jammy: linux-modules-extra-6.8.0-90-generic 6.8.0-90.91~22.04.1 (fixed in 6.8.0-138.138~22.04.1)
  6.8.0.205 jammy: linux-modules-6.8.0-90-generic 6.8.0-90.91~22.04.1 (fixed in 6.8.0-138.138~22.04.1)
  6.8.0.205 jammy: linux-modules-extra-6.8.0-90-generic 6.8.0-90.91~22.04.1 (fixed in 6.8.0-138.138~22.04.1)

CVEs: CVE-2026-64531, CVE-2026-53151, CVE-2026-53246, CVE-2026-53176, CVE-2026-52914, CVE-2026-52924, CVE-2026-43465, CVE-2026-46331, CVE-2026-52931, CVE-2026-43198, CVE-2026-43197, CVE-2026-53247, CVE-2026-53215, CVE-2026-53359, CVE-2026-46325, CVE-2026-46242, CVE-2026-53212, CVE-2026-53224, CVE-2026-53228, CVE-2026-53225, CVE-2026-43083

References:
  https://ubuntu.com/security/notices/USN-8656-1