{"id":"CVE-2026-98791","title":"net/mlx5e: Fix AF_XDP TX timestamp teardown NULL dereference","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Fix AF_XDP TX timestamp teardown NULL dereference\n\nDuring XSK TX queue teardown, outstanding descriptors are completed\nwithout a CQE. If one requested a TX t…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= ec706a860eba99bf934d59f74b5db90af44e882e < fce70b6bf9f3261e887419a4e7caa25b80fa9d55","Linux >= ec706a860eba99bf934d59f74b5db90af44e882e < f81d40e2eb69552334f510114f3e6edd0d43178b","Linux >= ec706a860eba99bf934d59f74b5db90af44e882e < 63df0ef4c6e3105589e6bb2e758ce611b0ada86c","Linux >= ec706a860eba99bf934d59f74b5db90af44e882e < 7b97273cbebe9dd4fddc457f0c4f2a124d0e3996","Linux 6.8"],"published":"2026-10-18","updated":"2026-10-18","sourceUpdated":"2026-10-18T15:48:30.080Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98791","references":[{"url":"https://git.kernel.org/stable/c/fce70b6bf9f3261e887419a4e7caa25b80fa9d55"},{"url":"https://git.kernel.org/stable/c/f81d40e2eb69552334f510114f3e6edd0d43178b"},{"url":"https://git.kernel.org/stable/c/63df0ef4c6e3105589e6bb2e758ce611b0ada86c"},{"url":"https://git.kernel.org/stable/c/7b97273cbebe9dd4fddc457f0c4f2a124d0e3996"}],"tags":["cve.org"],"ingestedAt":"2026-10-18T16:47:32.485Z","slug":"CVE-2026-98791","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Fix AF_XDP TX timestamp teardown NULL dereference\n\nDuring XSK TX queue teardown, outstanding descriptors are completed\nwithout a CQE. If one requested a TX timestamp, the completion path\npasses that NULL CQE to mlx5e_xsk_fill_timestamp(), which dereferences\nit.\n\nReturn zero when no CQE is available, indicating that teardown did not\nproduce a TX timestamp.\n\n## Affected\n\n- `Linux >= ec706a860eba99bf934d59f74b5db90af44e882e < fce70b6bf9f3261e887419a4e7caa25b80fa9d55`\n- `Linux >= ec706a860eba99bf934d59f74b5db90af44e882e < f81d40e2eb69552334f510114f3e6edd0d43178b`\n- `Linux >= ec706a860eba99bf934d59f74b5db90af44e882e < 63df0ef4c6e3105589e6bb2e758ce611b0ada86c`\n- `Linux >= ec706a860eba99bf934d59f74b5db90af44e882e < 7b97273cbebe9dd4fddc457f0c4f2a124d0e3996`\n- `Linux 6.8`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}