What’s Vulnerable › Vulnerabilities

CVE-2025-68732: gpu: host1x: Fix race in syncpt alloc/free

• Severity: unknown
• 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: 2025-12-24 · updated 2026-10-13

Description

In the Linux kernel, the following vulnerability has been resolved: gpu: host1x: Fix race in syncpt alloc/free Fix race condition between host1x_syncpt_alloc() and host1x_syncpt_put() by using kref_put_mutex() instead of kref_put() + manual mutex locking. This ensures no thread can acquire the syncpt_mutex after the refcount drops to zero but before syncpt_release acquires it. This prevents races where syncpoints could be allocated while still being cleaned up from a previous release. Remove explicit mutex locking in syncpt_release as kref_put_mutex() handles this atomically.

Affected products

• Linux kernel: 5.13 — fixed in 6.19

How to fix

Upgrade to a fixed version: Linux kernel 6.19. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/4aeaece518fa4436af93d1d8b786200d9656ff4b
• https://git.kernel.org/stable/c/4e6e07ce0197aecfb6c4a62862acc93b3efedeb7
• https://git.kernel.org/stable/c/6245cce711e2cdb2cc75c0bb8632952e36f8c972
• https://git.kernel.org/stable/c/79197c6007f2afbfd7bcf5b9b80ccabf8483d774
• https://git.kernel.org/stable/c/c7d393267c497502fa737607f435f05dfe6e3d9b
• https://git.kernel.org/stable/c/ca9388fba50dac2eb71c13702b7022a801bef90e
• https://git.kernel.org/stable/c/d138f73ffb0c57ded473c577719e6e551b7b1f27

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