{"id":"CVE-2026-98890","title":"wifi: libertas: reject short monitor TX frames","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: libertas: reject short monitor TX frames\n\nIn monitor mode, lbs_hard_start_xmit() casts skb->data to a\nradiotap TX header, skips that header, and then copies the 8…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 68c92c991ddb75dfd3fd62a94a1d4d2dde44dc3c","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d865dd6de8295f2bfaa83f0f5d49d2bef1543065","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 6576baa3fdbaa91fa75e4ba27095f4b8a27349a8","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b657cc98d7936c5d9ed7e0e1944ad0e1f36375bb","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 443fac3de65c76544b450b9f9903be8989150d55","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < cdcfd662c67833d89ee3d912efde2eb67c8a7326","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 13ff543e0b2c713aedeaadadde686686e949dc78","Linux < 5.10.271","Linux < 5.15.222","Linux < 6.1.189","Linux < 6.6.158","Linux < 6.12.111","Linux < 6.18.53","Linux (all versions)"],"published":"2026-10-23","updated":"2026-10-23","sourceUpdated":"2026-10-23T11:37:50.495Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98890","references":[{"url":"https://git.kernel.org/stable/c/68c92c991ddb75dfd3fd62a94a1d4d2dde44dc3c"},{"url":"https://git.kernel.org/stable/c/d865dd6de8295f2bfaa83f0f5d49d2bef1543065"},{"url":"https://git.kernel.org/stable/c/6576baa3fdbaa91fa75e4ba27095f4b8a27349a8"},{"url":"https://git.kernel.org/stable/c/b657cc98d7936c5d9ed7e0e1944ad0e1f36375bb"},{"url":"https://git.kernel.org/stable/c/443fac3de65c76544b450b9f9903be8989150d55"},{"url":"https://git.kernel.org/stable/c/cdcfd662c67833d89ee3d912efde2eb67c8a7326"},{"url":"https://git.kernel.org/stable/c/13ff543e0b2c713aedeaadadde686686e949dc78"}],"tags":["cve.org"],"ingestedAt":"2026-10-23T13:24:55.579Z","slug":"CVE-2026-98890","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: libertas: reject short monitor TX frames\n\nIn monitor mode, lbs_hard_start_xmit() casts skb->data to a\nradiotap TX header, skips that header, and then copies the 802.11\ndestination address from offset 4 in the remaining frame.  The\ngeneric length check only rejects zero-length and oversized skbs, so\na short monitor frame can be read past the end of the skb data.\n\nRequire enough bytes for the radiotap TX header and the destination\naddress field before using the monitor-mode header layout.\n\n## Affected\n\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 68c92c991ddb75dfd3fd62a94a1d4d2dde44dc3c`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d865dd6de8295f2bfaa83f0f5d49d2bef1543065`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 6576baa3fdbaa91fa75e4ba27095f4b8a27349a8`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b657cc98d7936c5d9ed7e0e1944ad0e1f36375bb`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 443fac3de65c76544b450b9f9903be8989150d55`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < cdcfd662c67833d89ee3d912efde2eb67c8a7326`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 13ff543e0b2c713aedeaadadde686686e949dc78`\n- `Linux < 5.10.271`\n- `Linux < 5.15.222`\n- `Linux < 6.1.189`\n- `Linux < 6.6.158`\n- `Linux < 6.12.111`\n- `Linux < 6.18.53`\n- `Linux (all versions)`\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":[]}