{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53089","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-06-09T07:44:35.384Z","datePublished":"2026-06-24T16:30:28.531Z","dateUpdated":"2026-09-02T12:49:34.606Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-02T12:49:34.606Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix use-after-free in offloaded map/prog info fill\n\nWhen querying info for an offloaded BPF map or program,\nbpf_map_offload_info_fill_ns() and bpf_prog_offload_info_fill_ns()\nobtain the network namespace with get_net(dev_net(offmap->netdev)).\nHowever, the associated netdev's netns may be racing with teardown\nduring netns destruction. If the netns refcount has already reached 0,\nget_net() performs a refcount_t increment on 0, triggering:\n\n  refcount_t: addition on 0; use-after-free.\n\nAlthough rtnl_lock and bpf_devs_lock ensure the netdev pointer remains\nvalid, they cannot prevent the netns refcount from reaching zero.\n\nFix this by using maybe_get_net() instead of get_net(). maybe_get_net()\nuses refcount_inc_not_zero() and returns NULL if the refcount is already\nzero, which causes ns_get_path_cb() to fail and the caller to return\n-ENOENT -- the correct behavior when the netns is being destroyed."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/offload.c"],"versions":[{"version":"675fc275a3a2d905535207237402c6d8dcb5fa4b","lessThan":"43d6848a2a6c92ccfd614d9f0bb6fd85b95dfa9d","status":"affected","versionType":"git"},{"version":"675fc275a3a2d905535207237402c6d8dcb5fa4b","lessThan":"642943ae5bdacabc8109dc4a5e0ebb4a6b99ef3e","status":"affected","versionType":"git"},{"version":"675fc275a3a2d905535207237402c6d8dcb5fa4b","lessThan":"fea55b034328feaafef75aee252f305e6f85a991","status":"affected","versionType":"git"},{"version":"675fc275a3a2d905535207237402c6d8dcb5fa4b","lessThan":"5662dac41a3442aa378d7c405164903eb109fc05","status":"affected","versionType":"git"},{"version":"675fc275a3a2d905535207237402c6d8dcb5fa4b","lessThan":"1a2dc103e16448d022a77ad5fc3234641436c4b7","status":"affected","versionType":"git"},{"version":"675fc275a3a2d905535207237402c6d8dcb5fa4b","lessThan":"85dc711f742b192eb97c0e00b521312f5a7a415e","status":"affected","versionType":"git"},{"version":"675fc275a3a2d905535207237402c6d8dcb5fa4b","lessThan":"a51e7fbe94a87e236631a83973d4f558310b2cd2","status":"affected","versionType":"git"},{"version":"675fc275a3a2d905535207237402c6d8dcb5fa4b","lessThan":"a0c584fc18056709c8e047a82a6045d6c209f4ce","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/offload.c"],"versions":[{"version":"4.16","status":"affected"},{"version":"0","lessThan":"4.16","status":"unaffected","versionType":"semver"},{"version":"5.10.269","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.220","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.187","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.156","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.108","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.49","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.10","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.16","versionEndExcluding":"5.10.269"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.16","versionEndExcluding":"5.15.220"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.16","versionEndExcluding":"6.1.187"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.16","versionEndExcluding":"6.6.156"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.16","versionEndExcluding":"6.12.108"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.16","versionEndExcluding":"6.18.49"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.16","versionEndExcluding":"7.0.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.16","versionEndExcluding":"7.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/43d6848a2a6c92ccfd614d9f0bb6fd85b95dfa9d"},{"url":"https://git.kernel.org/stable/c/642943ae5bdacabc8109dc4a5e0ebb4a6b99ef3e"},{"url":"https://git.kernel.org/stable/c/fea55b034328feaafef75aee252f305e6f85a991"},{"url":"https://git.kernel.org/stable/c/5662dac41a3442aa378d7c405164903eb109fc05"},{"url":"https://git.kernel.org/stable/c/1a2dc103e16448d022a77ad5fc3234641436c4b7"},{"url":"https://git.kernel.org/stable/c/85dc711f742b192eb97c0e00b521312f5a7a415e"},{"url":"https://git.kernel.org/stable/c/a51e7fbe94a87e236631a83973d4f558310b2cd2"},{"url":"https://git.kernel.org/stable/c/a0c584fc18056709c8e047a82a6045d6c209f4ce"}],"title":"bpf: Fix use-after-free in offloaded map/prog info fill","x_generator":{"engine":"bippy-1.2.0"}}}}