{"id":"CVE-2026-43457","state":"PUBLISHED","title":"mctp: i2c: fix skb memory leak in receive path","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmctp: i2c: fix skb memory leak in receive path\n\nWhen 'midev->allow_rx' is false, the newly allocated skb isn't consumed\nby netif_rx(), it needs to free the skb directly.","publishedAt":"2026-05-08T14:22:20.725Z","updatedAt":"2026-05-11T22:24:57.488Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f5b8abf9fc3dacd7529d363e26fe8230935d65f8","status":"affected","lessThan":"0fb2adbdd5c03e8c9ebcdc48afd414b2724c85eb","versionType":"git"},{"version":"f5b8abf9fc3dacd7529d363e26fe8230935d65f8","status":"affected","lessThan":"d7900a43b0a314a645ca0a2adf45928dbc7001f4","versionType":"git"},{"version":"f5b8abf9fc3dacd7529d363e26fe8230935d65f8","status":"affected","lessThan":"9f81be2ab9d8e4744871bfb3e868ef413413829f","versionType":"git"},{"version":"f5b8abf9fc3dacd7529d363e26fe8230935d65f8","status":"affected","lessThan":"1ec54187e1aa40a4cfa2b265e9a311179f24b98d","versionType":"git"},{"version":"f5b8abf9fc3dacd7529d363e26fe8230935d65f8","status":"affected","lessThan":"1b1be322342a6b0085bf6ee52235e5ac9834ec25","versionType":"git"},{"version":"f5b8abf9fc3dacd7529d363e26fe8230935d65f8","status":"affected","lessThan":"e3f5e0f22cfc2371e7471c9fd5b4da78f9df7c69","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/mctp/mctp-i2c.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.18","versionType":"semver"},{"version":"6.1.167","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.130","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.78","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.19","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.9","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/mctp/mctp-i2c.c"]}],"references":["https://git.kernel.org/stable/c/0fb2adbdd5c03e8c9ebcdc48afd414b2724c85eb","https://git.kernel.org/stable/c/d7900a43b0a314a645ca0a2adf45928dbc7001f4","https://git.kernel.org/stable/c/9f81be2ab9d8e4744871bfb3e868ef413413829f","https://git.kernel.org/stable/c/1ec54187e1aa40a4cfa2b265e9a311179f24b98d","https://git.kernel.org/stable/c/1b1be322342a6b0085bf6ee52235e5ac9834ec25","https://git.kernel.org/stable/c/e3f5e0f22cfc2371e7471c9fd5b4da78f9df7c69"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/43xxx/CVE-2026-43457.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43457","state":"PUBLISHED","datePublished":"2026-05-08T14:22:20.725Z","dateUpdated":"2026-05-11T22:24:57.488Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-01T14:12:56.010Z"},"containers":{"cna":{"title":"mctp: i2c: fix skb memory leak in receive path","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmctp: i2c: fix skb memory leak in receive path\n\nWhen 'midev->allow_rx' is false, the newly allocated skb isn't consumed\nby netif_rx(), it needs to free the skb directly."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f5b8abf9fc3dacd7529d363e26fe8230935d65f8","status":"affected","lessThan":"0fb2adbdd5c03e8c9ebcdc48afd414b2724c85eb","versionType":"git"},{"version":"f5b8abf9fc3dacd7529d363e26fe8230935d65f8","status":"affected","lessThan":"d7900a43b0a314a645ca0a2adf45928dbc7001f4","versionType":"git"},{"version":"f5b8abf9fc3dacd7529d363e26fe8230935d65f8","status":"affected","lessThan":"9f81be2ab9d8e4744871bfb3e868ef413413829f","versionType":"git"},{"version":"f5b8abf9fc3dacd7529d363e26fe8230935d65f8","status":"affected","lessThan":"1ec54187e1aa40a4cfa2b265e9a311179f24b98d","versionType":"git"},{"version":"f5b8abf9fc3dacd7529d363e26fe8230935d65f8","status":"affected","lessThan":"1b1be322342a6b0085bf6ee52235e5ac9834ec25","versionType":"git"},{"version":"f5b8abf9fc3dacd7529d363e26fe8230935d65f8","status":"affected","lessThan":"e3f5e0f22cfc2371e7471c9fd5b4da78f9df7c69","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/mctp/mctp-i2c.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.18","versionType":"semver"},{"version":"6.1.167","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.130","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.78","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.19","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.9","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/mctp/mctp-i2c.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/0fb2adbdd5c03e8c9ebcdc48afd414b2724c85eb"},{"url":"https://git.kernel.org/stable/c/d7900a43b0a314a645ca0a2adf45928dbc7001f4"},{"url":"https://git.kernel.org/stable/c/9f81be2ab9d8e4744871bfb3e868ef413413829f"},{"url":"https://git.kernel.org/stable/c/1ec54187e1aa40a4cfa2b265e9a311179f24b98d"},{"url":"https://git.kernel.org/stable/c/1b1be322342a6b0085bf6ee52235e5ac9834ec25"},{"url":"https://git.kernel.org/stable/c/e3f5e0f22cfc2371e7471c9fd5b4da78f9df7c69"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T22:24:57.488Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.1.167"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.6.130"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.12.78"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.18.19"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.19.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}