{"id":"CVE-2026-53227","state":"PUBLISHED","title":"net: openvswitch: fix possible kfree_skb of ERR_PTR","description":"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.","publishedAt":"2026-06-25T08:39:27.229Z","updatedAt":"2026-10-15T01:22:50.635Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"893f139b9a6c00c097b9082a90f3041cfb3a0d20","status":"affected","lessThan":"e248fb2e680deb2bd37bac551b72638fe4938a76","versionType":"git"},{"version":"893f139b9a6c00c097b9082a90f3041cfb3a0d20","status":"affected","lessThan":"0bb5b2dc1b90aa7dd1473fc8c4d813a29255ff8d","versionType":"git"},{"version":"893f139b9a6c00c097b9082a90f3041cfb3a0d20","status":"affected","lessThan":"971b1b37774f13acc5add0a2843f8598446b8598","versionType":"git"},{"version":"893f139b9a6c00c097b9082a90f3041cfb3a0d20","status":"affected","lessThan":"25fdf53698535fe8790237f5a8a9626791429785","versionType":"git"},{"version":"893f139b9a6c00c097b9082a90f3041cfb3a0d20","status":"affected","lessThan":"e3d509a1b71396e1452060dbf84a805fd1c3c549","versionType":"git"},{"version":"893f139b9a6c00c097b9082a90f3041cfb3a0d20","status":"affected","lessThan":"ecc55aad3390129a87106841f4b68bf3d70c9264","versionType":"git"},{"version":"893f139b9a6c00c097b9082a90f3041cfb3a0d20","status":"affected","lessThan":"895d1dd9057cde1687fa0f4286d47ceed0b82997","versionType":"git"},{"version":"893f139b9a6c00c097b9082a90f3041cfb3a0d20","status":"affected","lessThan":"ee30dd2909d8b98619f4341c70ec8dc8e155ab02","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/openvswitch/datapath.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.16","versionType":"semver"},{"version":"5.10.259","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.210","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.176","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.143","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.94","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.36","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.13","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/openvswitch/datapath.c"]}],"references":["https://git.kernel.org/stable/c/e248fb2e680deb2bd37bac551b72638fe4938a76","https://git.kernel.org/stable/c/0bb5b2dc1b90aa7dd1473fc8c4d813a29255ff8d","https://git.kernel.org/stable/c/971b1b37774f13acc5add0a2843f8598446b8598","https://git.kernel.org/stable/c/25fdf53698535fe8790237f5a8a9626791429785","https://git.kernel.org/stable/c/e3d509a1b71396e1452060dbf84a805fd1c3c549","https://git.kernel.org/stable/c/ecc55aad3390129a87106841f4b68bf3d70c9264","https://git.kernel.org/stable/c/895d1dd9057cde1687fa0f4286d47ceed0b82997","https://git.kernel.org/stable/c/ee30dd2909d8b98619f4341c70ec8dc8e155ab02","https://cert-portal.siemens.com/productcert/html/ssa-784472.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/53xxx/CVE-2026-53227.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53227","state":"PUBLISHED","datePublished":"2026-06-25T08:39:27.229Z","dateUpdated":"2026-10-15T01:22:50.635Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-06-09T07:44:35.392Z"},"containers":{"cna":{"title":"net: openvswitch: fix possible kfree_skb of ERR_PTR","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"893f139b9a6c00c097b9082a90f3041cfb3a0d20","status":"affected","lessThan":"e248fb2e680deb2bd37bac551b72638fe4938a76","versionType":"git"},{"version":"893f139b9a6c00c097b9082a90f3041cfb3a0d20","status":"affected","lessThan":"0bb5b2dc1b90aa7dd1473fc8c4d813a29255ff8d","versionType":"git"},{"version":"893f139b9a6c00c097b9082a90f3041cfb3a0d20","status":"affected","lessThan":"971b1b37774f13acc5add0a2843f8598446b8598","versionType":"git"},{"version":"893f139b9a6c00c097b9082a90f3041cfb3a0d20","status":"affected","lessThan":"25fdf53698535fe8790237f5a8a9626791429785","versionType":"git"},{"version":"893f139b9a6c00c097b9082a90f3041cfb3a0d20","status":"affected","lessThan":"e3d509a1b71396e1452060dbf84a805fd1c3c549","versionType":"git"},{"version":"893f139b9a6c00c097b9082a90f3041cfb3a0d20","status":"affected","lessThan":"ecc55aad3390129a87106841f4b68bf3d70c9264","versionType":"git"},{"version":"893f139b9a6c00c097b9082a90f3041cfb3a0d20","status":"affected","lessThan":"895d1dd9057cde1687fa0f4286d47ceed0b82997","versionType":"git"},{"version":"893f139b9a6c00c097b9082a90f3041cfb3a0d20","status":"affected","lessThan":"ee30dd2909d8b98619f4341c70ec8dc8e155ab02","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/openvswitch/datapath.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.16","versionType":"semver"},{"version":"5.10.259","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.210","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.176","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.143","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.94","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.36","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.13","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/openvswitch/datapath.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/e248fb2e680deb2bd37bac551b72638fe4938a76"},{"url":"https://git.kernel.org/stable/c/0bb5b2dc1b90aa7dd1473fc8c4d813a29255ff8d"},{"url":"https://git.kernel.org/stable/c/971b1b37774f13acc5add0a2843f8598446b8598"},{"url":"https://git.kernel.org/stable/c/25fdf53698535fe8790237f5a8a9626791429785"},{"url":"https://git.kernel.org/stable/c/e3d509a1b71396e1452060dbf84a805fd1c3c549"},{"url":"https://git.kernel.org/stable/c/ecc55aad3390129a87106841f4b68bf3d70c9264"},{"url":"https://git.kernel.org/stable/c/895d1dd9057cde1687fa0f4286d47ceed0b82997"},{"url":"https://git.kernel.org/stable/c/ee30dd2909d8b98619f4341c70ec8dc8e155ab02"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-25T08:39:27.229Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"5.10.259"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"5.15.210"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"6.1.176"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"6.6.143"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"6.12.94"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"6.18.36"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"7.0.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"affected":[{"vendor":"Siemens","product":"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"*","versionType":"custom"}]}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-784472.html"}],"providerMetadata":{"shortName":"siemens-SADP","orgId":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","dateUpdated":"2026-10-15T01:22:50.635Z"},"x_adpType":"supplier"}]}}}