What’s Vulnerable › Vulnerabilities

CVE-2026-43396: drm/xe/sync: Fix user fence leak on alloc failure

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-08 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: drm/xe/sync: Fix user fence leak on alloc failure When dma_fence_chain_alloc() fails, properly release the user fence reference to prevent a memory leak. (cherry picked from commit a5d5634cde48a9fcd68c8504aa07f89f175074a0)

Affected products

• Linux kernel: from 6.18.1 before 6.18.20; from 6.19 before 6.19.9; 6.18, 6.18-rc5, 6.18-rc6, 6.18-rc7, 7.0-rc1 — fixed in 6.18.20, 6.19.9

How to fix

Upgrade to a fixed version: Linux kernel 6.18.20, 6.19.9. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/05edc78eb4699e8e000a62aaa8dace50a17e19e3
• https://git.kernel.org/stable/c/0879c3f04f67e2a1677c25dcc24669ce21eb6a6c
• https://git.kernel.org/stable/c/f8f90b33934b307f6e4599b9fae38aa1ee5441a7

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