{"id":"CVE-2026-90135","state":"PUBLISHED","title":"net: add missing ref_tracker_dir_exit() to alloc_netdev_mqs()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: add missing ref_tracker_dir_exit() to alloc_netdev_mqs()\n\nsashiko is reporting that trying to read /sys/kernel/debug/ref_tracker/*\ncauses use-afer-free crash when either alloc_percpu() or dev_addr_init()\nin alloc_netdev_mqs() failed, for commit 4d92b95ff2f9 (\"net: add net device\nrefcount tracker infrastructure\") added ref_tracker_dir_exit() to only\nfree_netdev() path.","publishedAt":"2026-09-17T16:06:34.543Z","updatedAt":"2026-10-30T12:34:18.512Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4d92b95ff2f95f13df9bad0b5a25a9f60e72758d","status":"affected","lessThan":"b0859020cab4ea6101478141aeec1b052ed80bdd","versionType":"git"},{"version":"4d92b95ff2f95f13df9bad0b5a25a9f60e72758d","status":"affected","lessThan":"45be87c5195f34c0a51598bc91186f600be5c4c9","versionType":"git"},{"version":"4d92b95ff2f95f13df9bad0b5a25a9f60e72758d","status":"affected","lessThan":"2775bf36be7872834a7f8c0a0d9681a1a3e1cd4c","versionType":"git"},{"version":"4d92b95ff2f95f13df9bad0b5a25a9f60e72758d","status":"affected","lessThan":"5fe03b5257095e2beef0bc79e1f068fbd09a24c7","versionType":"git"},{"version":"4d92b95ff2f95f13df9bad0b5a25a9f60e72758d","status":"affected","lessThan":"63ab05e8f9654aa100d366c0236399fda6ffaab1","versionType":"git"},{"version":"4d92b95ff2f95f13df9bad0b5a25a9f60e72758d","status":"affected","lessThan":"0b1c2af8a22c35cb099c735c2f63ea3ba757557d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/core/dev.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.17","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":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/core/dev.c"]}],"references":["https://git.kernel.org/stable/c/b0859020cab4ea6101478141aeec1b052ed80bdd","https://git.kernel.org/stable/c/45be87c5195f34c0a51598bc91186f600be5c4c9","https://git.kernel.org/stable/c/2775bf36be7872834a7f8c0a0d9681a1a3e1cd4c","https://git.kernel.org/stable/c/5fe03b5257095e2beef0bc79e1f068fbd09a24c7","https://git.kernel.org/stable/c/63ab05e8f9654aa100d366c0236399fda6ffaab1","https://git.kernel.org/stable/c/0b1c2af8a22c35cb099c735c2f63ea3ba757557d"],"weaknesses":[],"ingestedAt":"2026-10-30T12:52:04.348Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/90xxx/CVE-2026-90135.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90135","state":"PUBLISHED","datePublished":"2026-09-17T16:06:34.543Z","dateUpdated":"2026-10-30T12:34:18.512Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.788Z"},"containers":{"cna":{"title":"net: add missing ref_tracker_dir_exit() to alloc_netdev_mqs()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: add missing ref_tracker_dir_exit() to alloc_netdev_mqs()\n\nsashiko is reporting that trying to read /sys/kernel/debug/ref_tracker/*\ncauses use-afer-free crash when either alloc_percpu() or dev_addr_init()\nin alloc_netdev_mqs() failed, for commit 4d92b95ff2f9 (\"net: add net device\nrefcount tracker infrastructure\") added ref_tracker_dir_exit() to only\nfree_netdev() 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