{"id":"CVE-2026-53227","summary":"net: openvswitch: fix possible kfree_skb of ERR_PTR","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: openvswitch: fix possible kfree_skb of ERR_PTR\n\nAfter the patch in the \"Fixes\" tag, the allocation of the \"reply\" skb\ncan happen either before or after locking the ovs_mutex.\n\nHowever, error cleanups still follow the classical reversed order,\nassuming \"reply\" is allocated before locking: it is freed after unlocking.\n\nIf \"reply\" allocation happens after locking the mutex and it fails,\n\"reply\" is left with an ERR_PTR, and execution jumps to the correspondent\ncleanup stage which will try to free an invalid pointer.\n\nFix this by setting the pointer to NULL after having saved its error\nvalue.","modified":"2026-07-08T08:13:46.634159133Z","published":"2026-06-25T08:39:27.229Z","related":["CGA-rjx6-p8c3-xjmv"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53227.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0bb5b2dc1b90aa7dd1473fc8c4d813a29255ff8d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/25fdf53698535fe8790237f5a8a9626791429785"},{"type":"WEB","url":"https://git.kernel.org/stable/c/895d1dd9057cde1687fa0f4286d47ceed0b82997"},{"type":"WEB","url":"https://git.kernel.org/stable/c/971b1b37774f13acc5add0a2843f8598446b8598"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e248fb2e680deb2bd37bac551b72638fe4938a76"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e3d509a1b71396e1452060dbf84a805fd1c3c549"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ecc55aad3390129a87106841f4b68bf3d70c9264"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ee30dd2909d8b98619f4341c70ec8dc8e155ab02"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53227.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53227"},{"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":"893f139b9a6c00c097b9082a90f3041cfb3a0d20"},{"fixed":"e248fb2e680deb2bd37bac551b72638fe4938a76"},{"fixed":"0bb5b2dc1b90aa7dd1473fc8c4d813a29255ff8d"},{"fixed":"971b1b37774f13acc5add0a2843f8598446b8598"},{"fixed":"25fdf53698535fe8790237f5a8a9626791429785"},{"fixed":"e3d509a1b71396e1452060dbf84a805fd1c3c549"},{"fixed":"ecc55aad3390129a87106841f4b68bf3d70c9264"},{"fixed":"895d1dd9057cde1687fa0f4286d47ceed0b82997"},{"fixed":"ee30dd2909d8b98619f4341c70ec8dc8e155ab02"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53227.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.16.0"},{"fixed":"5.10.259"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.210"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.176"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.143"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.94"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.36"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.13"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53227.json"}}],"schema_version":"1.7.5"}