{"id":"CVE-2026-53294","summary":"mailbox: mailbox-test: don't free the reused channel","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmailbox: mailbox-test: don't free the reused channel\n\nThe RX channel can be aliased to the TX channel if it has a different\nMMIO. This special case needs to be handled when freeing the channels\notherwise a double-free occurs.","modified":"2026-07-09T03:51:58.547089615Z","published":"2026-06-26T19:40:52.927Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53294.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/240c71a2aea36a1a4210f911a1c32ea88777e8e4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3afca89fae501dbd7421e1777b5b8f033b1d98d0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5c209299b0113e289e238fa5f2e8f00c59f76060"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5d4f3d0f64f1016cb78b400a70b67df91fac99b5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/82f6dcea46cf5de65c4ba7283f7c7b34de4a324d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/88ebadbf0deefdaccdab868b44ff70a0a257f473"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c494a11da45ad7ec9b0ff216c3e3ace351193bb6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fc0089f82c3e36060c2c79156bc2018bfb16b56b"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53294.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53294"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"8ea4484d0c2bb4e2152261943fa1a3522654b1c7"},{"fixed":"fc0089f82c3e36060c2c79156bc2018bfb16b56b"},{"fixed":"5d4f3d0f64f1016cb78b400a70b67df91fac99b5"},{"fixed":"c494a11da45ad7ec9b0ff216c3e3ace351193bb6"},{"fixed":"3afca89fae501dbd7421e1777b5b8f033b1d98d0"},{"fixed":"5c209299b0113e289e238fa5f2e8f00c59f76060"},{"fixed":"82f6dcea46cf5de65c4ba7283f7c7b34de4a324d"},{"fixed":"240c71a2aea36a1a4210f911a1c32ea88777e8e4"},{"fixed":"88ebadbf0deefdaccdab868b44ff70a0a257f473"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53294.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.4.0"},{"fixed":"5.10.258"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.209"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.175"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.141"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.91"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.33"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53294.json"}}],"schema_version":"1.7.5"}