{"id":"CVE-2026-98449","aliases":[],"cve":{"records":[{"id":"CVE-2026-98449","source":"Linux","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-25T10:25:14.349Z","published":"2026-10-18T15:14:59.772Z","modified":"2026-11-10T18:15:14.034Z"}],"publishers":[{"name":"Linux","role":"CNA","organizationId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","modified":"2026-11-10T18:15:14.034Z"}],"references":[{"url":"https://git.kernel.org/stable/c/36a2ba21d38a86bae84441e4c8d5b10653ef341a","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/59d30bdc3dd6fd3a8990f59bc7a137b1cbb3ed4e","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/70783946f3b5d0c06ec7df0f5e7bec2bfad24efb","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/8f6f8a48399f82f4a83f7b9f25b9707e0062a4f9","tags":[],"source":"Linux"}],"weaknesses":[],"applicability":[{"source":"Linux","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.12.117"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.18.61"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"7.2.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"7.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20.11"}]}]}]}],"prioritization":[]},"title":"smb: client: delete compound mids on send failure before unlock","titleSource":"Linux","descriptionSource":"Linux","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: delete compound mids on send failure before unlock\n\nWhen sending a compound request fails, smb_send_rqst() kicks off a\nreconnect. compound_send_recv() still has those mids on pending_mid_q,\nbut it unlocks the server without removing them first.\n\nDuring reconnect, cifs_abort_connection() walks pending_mid_q and runs\neach mid callback. With no response yet, those callbacks return credits\nand drop in_flight. Then compound_send_recv()'s send-error path returns\nthe same credits again. in_flight ends up decremented twice and\nsmb2_add_credits() WARNs.\n\nsyzbot hits this during SMB2_negotiate when the socket send fails.\n\ncifs_call_async() already calls delete_mid() before unlock on send\nfailure. Do the same for compound chains and set cancelled_mid[] so the\nout: path does not delete them again.","score":null,"severity":"unknown","published":"2026-10-18T15:14:59.772Z","modified":"2026-11-10T18:15:14.034Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"ee258d79159afed52ca9372aeb9c1a51e89b32ee","status":"affected","lessThan":"36a2ba21d38a86bae84441e4c8d5b10653ef341a","versionType":"git"},{"version":"ee258d79159afed52ca9372aeb9c1a51e89b32ee","status":"affected","lessThan":"59d30bdc3dd6fd3a8990f59bc7a137b1cbb3ed4e","versionType":"git"},{"version":"ee258d79159afed52ca9372aeb9c1a51e89b32ee","status":"affected","lessThan":"70783946f3b5d0c06ec7df0f5e7bec2bfad24efb","versionType":"git"},{"version":"ee258d79159afed52ca9372aeb9c1a51e89b32ee","status":"affected","lessThan":"8f6f8a48399f82f4a83f7b9f25b9707e0062a4f9","versionType":"git"},{"version":"3c57a0be487088b08d9c88998f911eb4a7ba36e4","status":"affected","versionType":"git"},{"version":"4.20.11","status":"affected","lessThan":"4.21","versionType":"semver"}],"defaultStatus":"unaffected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-98449"},{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"5.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.0","versionType":"semver"},{"version":"6.12.117","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.61","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"defaultStatus":"affected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-98449"}],"remediation":[],"references":["https://git.kernel.org/stable/c/36a2ba21d38a86bae84441e4c8d5b10653ef341a","https://git.kernel.org/stable/c/59d30bdc3dd6fd3a8990f59bc7a137b1cbb3ed4e","https://git.kernel.org/stable/c/70783946f3b5d0c06ec7df0f5e7bec2bfad24efb","https://git.kernel.org/stable/c/8f6f8a48399f82f4a83f7b9f25b9707e0062a4f9"],"sources":[{"name":"CVE","id":"CVE-2026-98449","modified":"2026-11-10T18:15:14.034Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-98449"}],"assessments":[],"sourceAffected":[],"observedAt":"2026-11-10T18:25:05.778Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T00:10:33.488Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-11-07T02:40:35.438Z","attemptedAt":"2026-11-07T02:40:35.438Z"},{"source":"GHSA","status":"available","checkedAt":"2026-11-07T02:40:35.438Z","attemptedAt":"2026-11-07T02:40:35.438Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-07T02:40:35.438Z","attemptedAt":"2026-11-07T02:40:35.438Z"},{"source":"EPSS","status":"available","checkedAt":"2026-11-07T02:40:35.438Z","attemptedAt":"2026-11-07T02:40:35.438Z"}],"evidence":[{"source":"ENISA EUVD","id":"EUVD-2026-103689","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-103689","modified":"Nov 6, 2026, 5:15:00 PM","checkedAt":"2026-11-07T02:40:35.438Z"},{"source":"NVD","id":"CVE-2026-98449","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98449","modified":"2026-11-06T18:18:29.450","checkedAt":"2026-11-07T02:40:35.438Z"},{"source":"FIRST EPSS","id":"CVE-2026-98449","url":"https://www.first.org/epss/","probability":0.00162,"percentile":0.05471,"date":"2026-11-06","checkedAt":"2026-11-07T02:40:35.438Z"},{"source":"GitHub Advisory Database","id":"GHSA-2758-q84j-4rxj","url":"https://github.com/advisories/GHSA-2758-q84j-4rxj","modified":"2026-11-06T18:34:53Z","checkedAt":"2026-11-07T02:40:35.438Z"}],"aiSummary":null}