{"id":"CVE-2026-43440","title":"net/mana: Null service_wq on setup error to prevent double destroy","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mana: Null service_wq on setup error to prevent double destroy\n\nIn mana_gd_setup() error path, set gc->service_wq to NULL after\ndestroy_workqueue() to match the cle…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= fa3c2f8d9152344a478abb847081c1b5f84a94f5 < 59489ce60d7412ed82fb1d8002faa3102dcd4916","Linux >= a9a7c3203fdc4d4a8d8a7a3b1ed05d2bb4c6e77e < 6c92392602b451e3869f15ab685f8f650e942b13","Linux >= f975a0955276579e2176a134366ed586071c7c6a < 87c2302813abc55c46485711a678e3c312b00666","Linux >= 6.18.16 < 6.18.19","Linux >= 6.19.6 < 6.19.9"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T15:38:48.023258Z"},"published":"2026-05-08","updated":"2026-11-06","sourceUpdated":"2026-11-06T15:42:54.226Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-43440","references":[{"url":"https://git.kernel.org/stable/c/59489ce60d7412ed82fb1d8002faa3102dcd4916"},{"url":"https://git.kernel.org/stable/c/6c92392602b451e3869f15ab685f8f650e942b13"},{"url":"https://git.kernel.org/stable/c/87c2302813abc55c46485711a678e3c312b00666"}],"tags":["cve.org"],"epss":0.00124,"epssPercentile":0.02125,"ingestedAt":"2026-11-06T15:54:03.910Z","slug":"CVE-2026-43440","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet/mana: Null service_wq on setup error to prevent double destroy\n\nIn mana_gd_setup() error path, set gc->service_wq to NULL after\ndestroy_workqueue() to match the cleanup in mana_gd_cleanup().\nThis prevents a use-after-free if the workqueue pointer is checked\nafter a failed setup.\n\n## Affected\n\n- `Linux >= fa3c2f8d9152344a478abb847081c1b5f84a94f5 < 59489ce60d7412ed82fb1d8002faa3102dcd4916`\n- `Linux >= a9a7c3203fdc4d4a8d8a7a3b1ed05d2bb4c6e77e < 6c92392602b451e3869f15ab685f8f650e942b13`\n- `Linux >= f975a0955276579e2176a134366ed586071c7c6a < 87c2302813abc55c46485711a678e3c312b00666`\n- `Linux >= 6.18.16 < 6.18.19`\n- `Linux >= 6.19.6 < 6.19.9`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}