CVE-2026-89976
In the Linux kernel, the following vulnerability has been resolved: accel/ethosu: fix job completion fence cleanup ethosu_ioctl_submit_job() allocates done_fence before validating buffer handles. Errors after allocation call ethosu_job_err_cleanup(), which frees the job but leaks the uninitialized fence. A scheduler dependency error also lets ethosu_job_run() return before dma_fence_init(). Normal cleanup then passes a zeroed refcount to dma_fence_put(). Release done_fence in the common cleanup path and use dma_fence_was_initialized() to distinguish initialized fences from raw allocations. [robh: also fix goto]
Affected versions
Linux kernel versions
6.19
and later are affected. Fixed in
7.2.5,
7.3-rc2
and their respective stable series.
References
2 totalFrequently asked questions
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What is CVE-2026-89976?
CVE-2026-89976 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.19 onward and has been patched in 7.2.5 and 7.3-rc2. CVE-2026-89976 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-89976?
Yes. CVE-2026-89976 has been patched. Fixed versions include 7.2.5 and 7.3-rc2. If you are running Linux kernel 6.19 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-89976 actively exploited?
No. CVE-2026-89976 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.