{"id":"CVE-2026-99249","aliases":[],"cve":{"records":[{"id":"CVE-2026-99249","source":"Linux","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-25T10:25:14.403Z","published":"2026-11-03T11:18:26.800Z","modified":"2026-11-03T11:18:26.800Z"}],"publishers":[{"name":"Linux","role":"CNA","organizationId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","modified":"2026-11-03T11:18:26.800Z"}],"references":[{"url":"https://git.kernel.org/stable/c/064a6761d6f6ac55d090d3eaca649577ee736713","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/e8dafad7de9ede813af2d48cc04b7c88fef16682","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/4b47107f1a80c809c80093e872bcaccdbae13db4","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/2e10b8a74f55b5aae33db105d3e2d3ae759c865a","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/7deb5770840339fe88755bf27b92f74edc26ee87","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/81933038f5e273d17ed22792f906889393b204c5","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":"2.6.24","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.24","versionEndExcluding":"6.6.161"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.24","versionEndExcluding":"6.12.115"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.24","versionEndExcluding":"6.18.59"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.24","versionEndExcluding":"7.2.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.24","versionEndExcluding":"7.3"}]}]}]}],"prioritization":[]},"title":"pid_namespace: make zap_pid_ns_processes() freezable","titleSource":"Linux","descriptionSource":"Linux","description":"In the Linux kernel, the following vulnerability has been resolved:\n\npid_namespace: make zap_pid_ns_processes() freezable\n\nWhen the init of a pid namespace exits, zap_pid_ns_processes() waits\nuntil all other pids in the namespace are freed. A tracer outside the\nnamespace that does not reap its traced zombies keeps those pids\nallocated, so this wait has no upper bound, and while it lasts every\nsuspend attempt fails:\n\n  Freezing user space processes failed after 20.006 seconds (2 tasks refusing to freeze, wq_busy=0):\n\nNeither wait is freezable. The first loop sleeps in do_wait(), which\nreturns -ERESTARTSYS on the freezer's fake signal; the loop then clears\nTIF_SIGPENDING and waits again without ever freezing. The final loop\nsleeps in TASK_INTERRUPTIBLE, and since nothing clears TIF_SIGPENDING\nthere, schedule() returns immediately after the first freeze attempt\nand the task spins until the wait ends.\n\nSleep in TASK_INTERRUPTIBLE | TASK_FREEZABLE in do_wait(), so that the\nfreezer can freeze tasks waiting there directly, and in TASK_IDLE |\nTASK_FREEZABLE in the final loop, like coredump_task_exit() does.\n\nThis was hit with Chromium-based browsers: crashpad ptrace-attaches the\nthreads of a crashed renderer, which is a pid namespace init, and does\nnot reap those killed during the dump.","score":null,"severity":"unknown","published":"2026-11-03T11:18:26.800Z","modified":"2026-11-03T11:18:26.800Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"3eb07c8c8adb6f0572baba844ba2d9e501654316","status":"affected","lessThan":"064a6761d6f6ac55d090d3eaca649577ee736713","versionType":"git"},{"version":"3eb07c8c8adb6f0572baba844ba2d9e501654316","status":"affected","lessThan":"e8dafad7de9ede813af2d48cc04b7c88fef16682","versionType":"git"},{"version":"3eb07c8c8adb6f0572baba844ba2d9e501654316","status":"affected","lessThan":"4b47107f1a80c809c80093e872bcaccdbae13db4","versionType":"git"},{"version":"3eb07c8c8adb6f0572baba844ba2d9e501654316","status":"affected","lessThan":"2e10b8a74f55b5aae33db105d3e2d3ae759c865a","versionType":"git"},{"version":"3eb07c8c8adb6f0572baba844ba2d9e501654316","status":"affected","lessThan":"7deb5770840339fe88755bf27b92f74edc26ee87","versionType":"git"},{"version":"3eb07c8c8adb6f0572baba844ba2d9e501654316","status":"affected","lessThan":"81933038f5e273d17ed22792f906889393b204c5","versionType":"git"}],"defaultStatus":"unaffected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-99249"},{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"2.6.24","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.24","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.161","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.115","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.59","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.13","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-2026-99249"}],"remediation":[],"references":["https://git.kernel.org/stable/c/064a6761d6f6ac55d090d3eaca649577ee736713","https://git.kernel.org/stable/c/e8dafad7de9ede813af2d48cc04b7c88fef16682","https://git.kernel.org/stable/c/4b47107f1a80c809c80093e872bcaccdbae13db4","https://git.kernel.org/stable/c/2e10b8a74f55b5aae33db105d3e2d3ae759c865a","https://git.kernel.org/stable/c/7deb5770840339fe88755bf27b92f74edc26ee87","https://git.kernel.org/stable/c/81933038f5e273d17ed22792f906889393b204c5"],"sources":[{"name":"CVE","id":"CVE-2026-99249","modified":"2026-11-03T11:18:26.800Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-99249"}],"assessments":[],"sourceAffected":[],"observedAt":"2026-11-03T11:20:52.795Z","kev":{"status":"not-listed","checkedAt":"2026-11-06T21:20:33.816Z"},"coverage":[{"source":"NVD","status":"no-result","checkedAt":"2026-11-03T11:25:33.636Z","attemptedAt":"2026-11-03T11:25:33.636Z"},{"source":"GHSA","status":"no-result","checkedAt":"2026-11-03T11:25:33.624Z","attemptedAt":"2026-11-03T11:25:33.624Z"},{"source":"EUVD","status":"no-result","checkedAt":"2026-11-03T11:25:34.324Z","attemptedAt":"2026-11-03T11:25:34.324Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-11-03T11:25:33.970Z","attemptedAt":"2026-11-03T11:25:33.970Z"}],"evidence":[],"aiSummary":null}