{"id":"CVE-2026-53296","title":"mailbox: mailbox-test: free channels on probe error","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nmailbox: mailbox-test: free channels on probe error\n\nOn probe error, free the previously obtained channels. This not only\nprevents a leak, but also UAF scenarios becaus…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < 0ad8c4a03a358de7811ba1ab8cbd1fe76ad0ff6b","Linux >= 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < 15c4cc3850cfe1b973eb7b63c02314b267f06a64","Linux >= 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < 187069ccc3474516af32350e20d7e449160fa6de","Linux >= 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < 81c9e7e4030e71391ab479c4c6e17b64802577aa","Linux >= 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < 6c6ce2ccb4fcf1617fec83f91b21aa0265f30701","Linux >= 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < 742001919653e7313b4e91780c5d108be1692365","Linux >= 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < 02beb178e2e159daeb8f992d7abb16a37da31664","Linux >= 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < c02053a9055d5fdfd32432287cca8958db1d5bc5","Linux 4.4"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T16:25:57.496250Z"},"published":"2026-06-26","updated":"2026-11-06","sourceUpdated":"2026-11-06T16:34:19.157Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-53296","references":[{"url":"https://git.kernel.org/stable/c/0ad8c4a03a358de7811ba1ab8cbd1fe76ad0ff6b"},{"url":"https://git.kernel.org/stable/c/15c4cc3850cfe1b973eb7b63c02314b267f06a64"},{"url":"https://git.kernel.org/stable/c/187069ccc3474516af32350e20d7e449160fa6de"},{"url":"https://git.kernel.org/stable/c/81c9e7e4030e71391ab479c4c6e17b64802577aa"},{"url":"https://git.kernel.org/stable/c/6c6ce2ccb4fcf1617fec83f91b21aa0265f30701"},{"url":"https://git.kernel.org/stable/c/742001919653e7313b4e91780c5d108be1692365"},{"url":"https://git.kernel.org/stable/c/02beb178e2e159daeb8f992d7abb16a37da31664"},{"url":"https://git.kernel.org/stable/c/c02053a9055d5fdfd32432287cca8958db1d5bc5"}],"tags":["cve.org"],"epss":0.00176,"epssPercentile":0.07124,"ingestedAt":"2026-11-06T16:57:43.252Z","slug":"CVE-2026-53296","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nmailbox: mailbox-test: free channels on probe error\n\nOn probe error, free the previously obtained channels. This not only\nprevents a leak, but also UAF scenarios because the client structure\nwill be removed nonetheless because it was allocated with devm.\n\n## Affected\n\n- `Linux >= 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < 0ad8c4a03a358de7811ba1ab8cbd1fe76ad0ff6b`\n- `Linux >= 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < 15c4cc3850cfe1b973eb7b63c02314b267f06a64`\n- `Linux >= 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < 187069ccc3474516af32350e20d7e449160fa6de`\n- `Linux >= 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < 81c9e7e4030e71391ab479c4c6e17b64802577aa`\n- `Linux >= 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < 6c6ce2ccb4fcf1617fec83f91b21aa0265f30701`\n- `Linux >= 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < 742001919653e7313b4e91780c5d108be1692365`\n- `Linux >= 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < 02beb178e2e159daeb8f992d7abb16a37da31664`\n- `Linux >= 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < c02053a9055d5fdfd32432287cca8958db1d5bc5`\n- `Linux 4.4`\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":[]}