{"id":"CVE-2026-68318","state":"PUBLISHED","title":"pds_core: fix use-after-free on workqueue during remove","description":"In the Linux kernel, the following vulnerability has been resolved:\n\npds_core: fix use-after-free on workqueue during remove\n\nIn pdsc_remove(), the workqueue is destroyed before pdsc_teardown()\nis called. This ordering allows two paths to queue work on the\ndestroyed workqueue:\n\n1. If pdsc_teardown() -> pdsc_devcmd_reset() times out, the error\n   path in pdsc_devcmd_locked() queues health_work.\n\n2. A NotifyQ event can trigger the ISR and queue work before free_irq()\n   is called in pdsc_teardown().\n\nFix by moving destroy_workqueue() after pdsc_teardown() so the\nworkqueue outlives every queuer; destroy_workqueue() then flushes any\nwork still pending.\n\nDraining the queued work also requires ordering the teardown so the\nresources that work touches are freed last:\n\n  - In pdsc_qcq_free(), after freeing the interrupt, cancel_work_sync()\n    the queue's work and only then clear qcq->intx, so\n    pdsc_process_adminq()'s read of qcq->intx for interrupt-credit\n    return cannot race with the clear.\n\n  - Free adminqcq before notifyqcq: the shared adminq ISR is released\n    when adminqcq is freed, and the adminq work accesses notifyqcq, so\n    both must be stopped before notifyqcq is freed.","publishedAt":"2026-08-10T12:02:53.197Z","updatedAt":"2026-10-21T12:43:51.063Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"01ba61b55b2041a39c54aefb3153c770dd59a0ef","status":"affected","lessThan":"bac237c2aedb8225bfd2317c1361bbfce1e419ca","versionType":"git"},{"version":"01ba61b55b2041a39c54aefb3153c770dd59a0ef","status":"affected","lessThan":"224214eb4182ff20a665b615a90b66017539dd75","versionType":"git"},{"version":"01ba61b55b2041a39c54aefb3153c770dd59a0ef","status":"affected","lessThan":"9e0f80fac50ab95dd75537c8ecaf5051d01f19b5","versionType":"git"},{"version":"01ba61b55b2041a39c54aefb3153c770dd59a0ef","status":"affected","lessThan":"ecc7a7d7569ec1d6a61e18372696b9de97635156","versionType":"git"},{"version":"01ba61b55b2041a39c54aefb3153c770dd59a0ef","status":"affected","lessThan":"0ad134881508c36b65c1a8864f8bec53adbd3327","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/amd/pds_core/core.c","drivers/net/ethernet/amd/pds_core/main.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.4","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.101","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.42","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.6","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/amd/pds_core/core.c","drivers/net/ethernet/amd/pds_core/main.c"]}],"references":["https://git.kernel.org/stable/c/bac237c2aedb8225bfd2317c1361bbfce1e419ca","https://git.kernel.org/stable/c/224214eb4182ff20a665b615a90b66017539dd75","https://git.kernel.org/stable/c/9e0f80fac50ab95dd75537c8ecaf5051d01f19b5","https://git.kernel.org/stable/c/ecc7a7d7569ec1d6a61e18372696b9de97635156","https://git.kernel.org/stable/c/0ad134881508c36b65c1a8864f8bec53adbd3327"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:49.727Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/68xxx/CVE-2026-68318.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-68318","state":"PUBLISHED","datePublished":"2026-08-10T12:02:53.197Z","dateUpdated":"2026-10-21T12:43:51.063Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-30T09:28:09.382Z"},"containers":{"cna":{"title":"pds_core: fix use-after-free on workqueue during remove","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\npds_core: fix use-after-free on workqueue during remove\n\nIn pdsc_remove(), the workqueue is destroyed before pdsc_teardown()\nis called. This ordering allows two paths to queue work on the\ndestroyed workqueue:\n\n1. If pdsc_teardown() -> pdsc_devcmd_reset() times out, the error\n   path in pdsc_devcmd_locked() queues health_work.\n\n2. A NotifyQ event can trigger the ISR and queue work before free_irq()\n   is called in pdsc_teardown().\n\nFix by moving destroy_workqueue() after pdsc_teardown() so the\nworkqueue outlives every queuer; destroy_workqueue() then flushes any\nwork still pending.\n\nDraining the queued work also requires ordering the teardown so the\nresources that work touches are freed last:\n\n  - In pdsc_qcq_free(), after freeing the interrupt, cancel_work_sync()\n    the queue's work and only then clear qcq->intx, so\n    pdsc_process_adminq()'s read of qcq->intx for interrupt-credit\n    return cannot race with the clear.\n\n  - Free adminqcq before notifyqcq: the shared adminq ISR is released\n    when adminqcq is freed, and the adminq work accesses notifyqcq, so\n    both must be stopped before notifyqcq is freed."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"01ba61b55b2041a39c54aefb3153c770dd59a0ef","status":"affected","lessThan":"bac237c2aedb8225bfd2317c1361bbfce1e419ca","versionType":"git"},{"version":"01ba61b55b2041a39c54aefb3153c770dd59a0ef","status":"affected","lessThan":"224214eb4182ff20a665b615a90b66017539dd75","versionType":"git"},{"version":"01ba61b55b2041a39c54aefb3153c770dd59a0ef","status":"affected","lessThan":"9e0f80fac50ab95dd75537c8ecaf5051d01f19b5","versionType":"git"},{"version":"01ba61b55b2041a39c54aefb3153c770dd59a0ef","status":"affected","lessThan":"ecc7a7d7569ec1d6a61e18372696b9de97635156","versionType":"git"},{"version":"01ba61b55b2041a39c54aefb3153c770dd59a0ef","status":"affected","lessThan":"0ad134881508c36b65c1a8864f8bec53adbd3327","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/amd/pds_core/core.c","drivers/net/ethernet/amd/pds_core/main.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.4","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.101","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.42","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.6","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/amd/pds_core/core.c","drivers/net/ethernet/amd/pds_core/main.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/bac237c2aedb8225bfd2317c1361bbfce1e419ca"},{"url":"https://git.kernel.org/stable/c/224214eb4182ff20a665b615a90b66017539dd75"},{"url":"https://git.kernel.org/stable/c/9e0f80fac50ab95dd75537c8ecaf5051d01f19b5"},{"url":"https://git.kernel.org/stable/c/ecc7a7d7569ec1d6a61e18372696b9de97635156"},{"url":"https://git.kernel.org/stable/c/0ad134881508c36b65c1a8864f8bec53adbd3327"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-21T12:43:51.063Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.12.101"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"6.18.42"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"7.1.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}