What’s Vulnerable › Vulnerabilities

CVE-2024-56704: 9p/xen: fix release of IRQ

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-12-28 · updated 2026-08-04
• Weakness: CWE-415

Description

In the Linux kernel, the following vulnerability has been resolved: 9p/xen: fix release of IRQ Kernel logs indicate an IRQ was double-freed. Pass correct device ID during IRQ release. [Dominique: remove confusing variable reset to 0]

Affected products

• Linux kernel: from 4.12 before 4.19.325; from 4.20 before 5.4.287; from 5.5 before 5.10.231; from 5.11 before 5.15.174; from 5.16 before 6.1.120; from 6.2 before 6.6.64 — fixed in 4.19.325, 5.10.231, 5.15.174, 5.4.287, 6.1.120, 6.11.11

How to fix

Upgrade to a fixed version: Linux kernel 4.19.325, 5.10.231, 5.15.174, 5.4.287. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/2bb3ee1bf237557daea1d58007d2e1d4a6502ccf
• https://git.kernel.org/stable/c/4950408793b118cb8075bcee1f033b543fb719fa
• https://git.kernel.org/stable/c/530bc9f03a102fac95b07cda513bfc16ff69e0ee
• https://git.kernel.org/stable/c/692eb06703afc3e24d889d77e94a0e20229f6a4a
• https://git.kernel.org/stable/c/7f5a2ed5c1810661e6b03f5a4ebf17682cdea850
• https://git.kernel.org/stable/c/b9e26059664bd9ebc64a0e8f5216266fc9f84265
• https://git.kernel.org/stable/c/d74b4b297097bd361b8a9abfde9b521ff464ea9c
• https://git.kernel.org/stable/c/d888f5f5d76b2722c267e6bdf51d445d60647b7b
• https://git.kernel.org/stable/c/e43c608f40c065b30964f0a806348062991b802d
• https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
• https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html

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