{"api_version":"1","generated_at":"2026-05-14T09:49:12+00:00","cve":"CVE-2026-43481","urls":{"html":"https://cve.report/CVE-2026-43481","api":"https://cve.report/api/cve/CVE-2026-43481.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43481","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43481"},"summary":{"title":"net-shapers: don't free reply skb after genlmsg_reply()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet-shapers: don't free reply skb after genlmsg_reply()\n\ngenlmsg_reply() hands the reply skb to netlink, and\nnetlink_unicast() consumes it on all return paths, whether the\nskb is queued successfully or freed on an error path.\n\nnet_shaper_nl_get_doit() and net_shaper_nl_cap_get_doit()\ncurrently jump to free_msg after genlmsg_reply() fails and call\nnlmsg_free(msg), which can hit the same skb twice.\n\nReturn the genlmsg_reply() error directly and keep free_msg\nonly for pre-reply failures.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-13 16:16:51","updated_at":"2026-05-13 16:16:51"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/57885276cc16a2e2b76282c808a4e84cbecb3aae","name":"https://git.kernel.org/stable/c/57885276cc16a2e2b76282c808a4e84cbecb3aae","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/83f7b54242d0abbfce35a55c01322f50962ed3ee","name":"https://git.kernel.org/stable/c/83f7b54242d0abbfce35a55c01322f50962ed3ee","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8738dcc844fff7d0157ee775230e95df3b1884d7","name":"https://git.kernel.org/stable/c/8738dcc844fff7d0157ee775230e95df3b1884d7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43481","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43481","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4b623f9f0f59652ea71fcb27d60b4c3b65126dbb 8738dcc844fff7d0157ee775230e95df3b1884d7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4b623f9f0f59652ea71fcb27d60b4c3b65126dbb 83f7b54242d0abbfce35a55c01322f50962ed3ee git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4b623f9f0f59652ea71fcb27d60b4c3b65126dbb 57885276cc16a2e2b76282c808a4e84cbecb3aae git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.13","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.13 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.19 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.9 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/shaper/shaper.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"8738dcc844fff7d0157ee775230e95df3b1884d7","status":"affected","version":"4b623f9f0f59652ea71fcb27d60b4c3b65126dbb","versionType":"git"},{"lessThan":"83f7b54242d0abbfce35a55c01322f50962ed3ee","status":"affected","version":"4b623f9f0f59652ea71fcb27d60b4c3b65126dbb","versionType":"git"},{"lessThan":"57885276cc16a2e2b76282c808a4e84cbecb3aae","status":"affected","version":"4b623f9f0f59652ea71fcb27d60b4c3b65126dbb","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/shaper/shaper.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.13"},{"lessThan":"6.13","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.19","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.9","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.19","versionStartIncluding":"6.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.9","versionStartIncluding":"6.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"6.13","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet-shapers: don't free reply skb after genlmsg_reply()\n\ngenlmsg_reply() hands the reply skb to netlink, and\nnetlink_unicast() consumes it on all return paths, whether the\nskb is queued successfully or freed on an error path.\n\nnet_shaper_nl_get_doit() and net_shaper_nl_cap_get_doit()\ncurrently jump to free_msg after genlmsg_reply() fails and call\nnlmsg_free(msg), which can hit the same skb twice.\n\nReturn the genlmsg_reply() error directly and keep free_msg\nonly for pre-reply failures."}],"providerMetadata":{"dateUpdated":"2026-05-13T15:08:29.116Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/8738dcc844fff7d0157ee775230e95df3b1884d7"},{"url":"https://git.kernel.org/stable/c/83f7b54242d0abbfce35a55c01322f50962ed3ee"},{"url":"https://git.kernel.org/stable/c/57885276cc16a2e2b76282c808a4e84cbecb3aae"}],"title":"net-shapers: don't free reply skb after genlmsg_reply()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43481","datePublished":"2026-05-13T15:08:29.116Z","dateReserved":"2026-05-01T14:12:56.012Z","dateUpdated":"2026-05-13T15:08:29.116Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-13 16:16:51","lastModifiedDate":"2026-05-13 16:16:51","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43481","Ordinal":"1","Title":"net-shapers: don't free reply skb after genlmsg_reply()","CVE":"CVE-2026-43481","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43481","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet-shapers: don't free reply skb after genlmsg_reply()\n\ngenlmsg_reply() hands the reply skb to netlink, and\nnetlink_unicast() consumes it on all return paths, whether the\nskb is queued successfully or freed on an error path.\n\nnet_shaper_nl_get_doit() and net_shaper_nl_cap_get_doit()\ncurrently jump to free_msg after genlmsg_reply() fails and call\nnlmsg_free(msg), which can hit the same skb twice.\n\nReturn the genlmsg_reply() error directly and keep free_msg\nonly for pre-reply failures.","Type":"Description","Title":"net-shapers: don't free reply skb after genlmsg_reply()"}]}}}