{"id":"CVE-2026-99056","aliases":[],"cve":{"records":[{"id":"CVE-2026-99056","source":"Linux","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-25T10:25:14.388Z","published":"2026-10-23T12:22:42.234Z","modified":"2026-10-30T12:41:22.353Z"}],"publishers":[{"name":"Linux","role":"CNA","organizationId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","modified":"2026-10-30T12:41:22.353Z"}],"references":[{"url":"https://git.kernel.org/stable/c/b09071e2f8460b35c7d355addad0fc7b31c6904d","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/933df60a465b1b82ff92dcd6870504da90ba4e9b","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/61cc5dac60d50dee06cf5c7b7ab246f9c825a715","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/a18dd388045dc7263d99a07db9de4e0f149ca8f1","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/9f3e9fe1b155e9b4572054d8d140586bc3512ecf","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/d2b5f637b9b67a79a50d42614d10653c13b4e449","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/eaa3a29004c063d7e9d5ea55636f693f67e6db0f","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/0984ebc631792acf8fff105112ee74a6b8f1efcc","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":"5.6","versionEndExcluding":"5.10.273"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.18.57"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"7.2.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"7.3"}]}]}]}],"prioritization":[]},"title":"strparser: make sure __strp_recv isn't running before tearing down the parser","titleSource":"Linux","descriptionSource":"Linux","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nstrparser: make sure __strp_recv isn't running before tearing down the parser\n\nThe comment above strp_done() claims that if strp is stopped,\nstrp_recv will no longer be called. That's only true if the caller has\na mechanism (eg locking) to guarantee that strp_recv() calls that\nstarted before strp_stop() have completed by the time we call\nstrp_done().\n\nThis adds a dummy lock_sock/release_sock pair to guarantee that any\nin-flight strp_recv() (which runs under either bh_lock_sock or\nlock_sock, depending if it's called from ->sk_data_ready or strp_work)\nhas completed.\n\nOnly espintcp can be affected by this race condition, but this patch\nmakes sure no future user of strp can have the bug.\n\nThis could crash on strp->sk (\"general mode\" of strp), but this mode\nhas been here for 9 years and has never been used. It'll be gone soon,\nno point worrying about it.\n\nSwitch the stopped/paused/etc bits to u8's to avoid races between\nstrp_stop() and strp_pause/unpause().\n\nA reproducer has been published and turns the possible UAF into an\nexploit [1].","score":7.8,"severity":"high","published":"2026-10-23T12:22:42.234Z","modified":"2026-10-30T12:41:22.353Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593","status":"affected","lessThan":"b09071e2f8460b35c7d355addad0fc7b31c6904d","versionType":"git"},{"version":"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593","status":"affected","lessThan":"933df60a465b1b82ff92dcd6870504da90ba4e9b","versionType":"git"},{"version":"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593","status":"affected","lessThan":"61cc5dac60d50dee06cf5c7b7ab246f9c825a715","versionType":"git"},{"version":"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593","status":"affected","lessThan":"a18dd388045dc7263d99a07db9de4e0f149ca8f1","versionType":"git"},{"version":"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593","status":"affected","lessThan":"9f3e9fe1b155e9b4572054d8d140586bc3512ecf","versionType":"git"},{"version":"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593","status":"affected","lessThan":"d2b5f637b9b67a79a50d42614d10653c13b4e449","versionType":"git"},{"version":"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593","status":"affected","lessThan":"eaa3a29004c063d7e9d5ea55636f693f67e6db0f","versionType":"git"},{"version":"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593","status":"affected","lessThan":"0984ebc631792acf8fff105112ee74a6b8f1efcc","versionType":"git"}],"defaultStatus":"unaffected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-99056"},{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"5.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.6","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":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.11","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-2026-99056"}],"remediation":[],"references":["https://git.kernel.org/stable/c/b09071e2f8460b35c7d355addad0fc7b31c6904d","https://git.kernel.org/stable/c/933df60a465b1b82ff92dcd6870504da90ba4e9b","https://git.kernel.org/stable/c/61cc5dac60d50dee06cf5c7b7ab246f9c825a715","https://git.kernel.org/stable/c/a18dd388045dc7263d99a07db9de4e0f149ca8f1","https://git.kernel.org/stable/c/9f3e9fe1b155e9b4572054d8d140586bc3512ecf","https://git.kernel.org/stable/c/d2b5f637b9b67a79a50d42614d10653c13b4e449","https://git.kernel.org/stable/c/eaa3a29004c063d7e9d5ea55636f693f67e6db0f","https://git.kernel.org/stable/c/0984ebc631792acf8fff105112ee74a6b8f1efcc"],"sources":[{"name":"CVE","id":"CVE-2026-99056","modified":"2026-10-30T12:41:22.353Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-99056"}],"assessments":[{"source":"Linux","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8}],"sourceAffected":[],"observedAt":"2026-10-30T13:11:29.715Z","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":{"text":"A vulnerability in the Linux kernel's strparser affects versions starting from 5.6. It may cause a crash due to a race condition.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T13:31:30.694Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-99056"}]}}