CVE-2026-98791
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix AF_XDP TX timestamp teardown NULL dereference During XSK TX queue teardown, outstanding descriptors are completed without a CQE. If one requested a TX timestamp, the completion path passes that NULL CQE to mlx5e_xsk_fill_timestamp(), which dereferences it. Return zero when no CQE is available, indicating that teardown did not produce a TX timestamp.
Affected versions
Linux kernel versions
6.8
and later are affected. Fixed in
6.12.113,
6.18.56,
7.2.10,
7.3
and their respective stable series.
References
4 totalFrequently asked questions
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What is CVE-2026-98791?
CVE-2026-98791 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.8 onward and has been patched in 6.12.113, 6.18.56, 7.2.10 and others. CVE-2026-98791 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-2026-98791?
Yes. CVE-2026-98791 has been patched. Fixed versions include 6.12.113, 6.18.56, 7.2.10 and others. If you are running Linux kernel 6.8 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-98791 actively exploited?
No. CVE-2026-98791 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.