{"id":"CVE-2026-98850","aliases":[],"cve":{"records":[{"id":"CVE-2026-98850","source":"Linux","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-25T10:25:14.376Z","published":"2026-10-18T15:50:50.062Z","modified":"2026-10-30T12:40:11.960Z"}],"publishers":[{"name":"Linux","role":"CNA","organizationId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","modified":"2026-10-30T12:40:11.960Z"}],"references":[{"url":"https://git.kernel.org/stable/c/1e6ee93cea4b77253b1b81eb5759899f959ebee3","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/70fefff0801d4c5405e515592d1e7ad1351530cd","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/4848c175b5984e6358bcca794ac1dee4d527efcc","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/ae169d318d5d23bac76ece90a7e2b5cb760ed043","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/be12b221c0301111eeb023be04add3c6ad7c21fe","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/69ca64bbb528898916f309552053c32a04a36ebc","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/9fd63d284e251332f4874ef9023cde472f315f86","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/2cf81fc9505b148b1b70068303ea6ea4b1212403","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":"2.6.31","versionEndExcluding":"5.10.273"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"6.18.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"7.2.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.31","versionEndExcluding":"7.3"}]}]}]}],"prioritization":[]},"title":"net/packet: prevent TX_RING byte count overflow","titleSource":"Linux","descriptionSource":"Linux","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/packet: prevent TX_RING byte count overflow\n\ntpacket_snd() drains every SEND_REQUEST frame in a TX ring and adds\neach valid packet length to the signed int len_sum. Userspace can\nrecycle completed frames concurrently, so a single blocking send call\nis not bounded by the ring size.\n\nAfter enough successful transmissions len_sum wraps into the negative\nrange. In particular, 65536 65535-byte frames followed by a 65007-byte\nframe produce 0xfffffdef, or -EIOCBQUEUED. sock_sendmsg_nosec() treats\nthat as an impossible return and triggers a BUG. On systems configured\nto panic on oops, a CAP_NET_RAW holder can panic the host kernel.\n\nStop before the next frame would make the byte count exceed INT_MAX.\nThe positive short count leaves that frame pending for a later send\ncall.\n\nA two-thread TPACKET_V2 reproducer triggered the BUG on an arm64 build\nof Linux 7.3-rc4. With this change, the same reproducer returned the\nexpected positive short count without an oops.","score":null,"severity":"unknown","published":"2026-10-18T15:50:50.062Z","modified":"2026-10-30T12:40:11.960Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1","status":"affected","lessThan":"1e6ee93cea4b77253b1b81eb5759899f959ebee3","versionType":"git"},{"version":"69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1","status":"affected","lessThan":"70fefff0801d4c5405e515592d1e7ad1351530cd","versionType":"git"},{"version":"69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1","status":"affected","lessThan":"4848c175b5984e6358bcca794ac1dee4d527efcc","versionType":"git"},{"version":"69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1","status":"affected","lessThan":"ae169d318d5d23bac76ece90a7e2b5cb760ed043","versionType":"git"},{"version":"69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1","status":"affected","lessThan":"be12b221c0301111eeb023be04add3c6ad7c21fe","versionType":"git"},{"version":"69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1","status":"affected","lessThan":"69ca64bbb528898916f309552053c32a04a36ebc","versionType":"git"},{"version":"69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1","status":"affected","lessThan":"9fd63d284e251332f4874ef9023cde472f315f86","versionType":"git"},{"version":"69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1","status":"affected","lessThan":"2cf81fc9505b148b1b70068303ea6ea4b1212403","versionType":"git"}],"defaultStatus":"unaffected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-98850"},{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"2.6.31","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.31","versionType":"semver"},{"version":"5.10.273","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.10","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-2026-98850"}],"remediation":[],"references":["https://git.kernel.org/stable/c/1e6ee93cea4b77253b1b81eb5759899f959ebee3","https://git.kernel.org/stable/c/70fefff0801d4c5405e515592d1e7ad1351530cd","https://git.kernel.org/stable/c/4848c175b5984e6358bcca794ac1dee4d527efcc","https://git.kernel.org/stable/c/ae169d318d5d23bac76ece90a7e2b5cb760ed043","https://git.kernel.org/stable/c/be12b221c0301111eeb023be04add3c6ad7c21fe","https://git.kernel.org/stable/c/69ca64bbb528898916f309552053c32a04a36ebc","https://git.kernel.org/stable/c/9fd63d284e251332f4874ef9023cde472f315f86","https://git.kernel.org/stable/c/2cf81fc9505b148b1b70068303ea6ea4b1212403"],"sources":[{"name":"CVE","id":"CVE-2026-98850","modified":"2026-10-30T12:40:11.960Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-98850"}],"assessments":[],"sourceAffected":[],"observedAt":"2026-10-30T13:09:47.096Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T02:30:32.029Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":null}