{"id":"CVE-2023-53684","state":"PUBLISHED","title":"xfrm: Zero padding when dumping algos and encap","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: Zero padding when dumping algos and encap\n\nWhen copying data to user-space we should ensure that only valid\ndata is copied over.  Padding in structures may be filled with\nrandom (possibly sensitve) data and should never be given directly\nto user-space.\n\nThis patch fixes the copying of xfrm algorithms and the encap\ntemplate in xfrm_user so that padding is zeroed.","publishedAt":"2025-10-07T15:21:37.413Z","updatedAt":"2026-05-11T19:49:55.229Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c7a5899eb26e2a4d516d53f65b6dd67be2228041","status":"affected","lessThan":"0725daaa9a879388ed312110f62dbd5ea2d75f8f","versionType":"git"},{"version":"c7a5899eb26e2a4d516d53f65b6dd67be2228041","status":"affected","lessThan":"5218af4ad5d8948faac19f71583bcd786c3852df","versionType":"git"},{"version":"c7a5899eb26e2a4d516d53f65b6dd67be2228041","status":"affected","lessThan":"1a351e26cc010d6991fbbd5701ac16581372e26f","versionType":"git"},{"version":"c7a5899eb26e2a4d516d53f65b6dd67be2228041","status":"affected","lessThan":"8222d5910dae08213b6d9d4bc9a7f8502855e624","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/xfrm/xfrm_user.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.11","versionType":"semver"},{"version":"5.15.106","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.23","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2.10","status":"unaffected","lessThanOrEqual":"6.2.*","versionType":"semver"},{"version":"6.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/xfrm/xfrm_user.c"]}],"references":["https://git.kernel.org/stable/c/0725daaa9a879388ed312110f62dbd5ea2d75f8f","https://git.kernel.org/stable/c/5218af4ad5d8948faac19f71583bcd786c3852df","https://git.kernel.org/stable/c/1a351e26cc010d6991fbbd5701ac16581372e26f","https://git.kernel.org/stable/c/8222d5910dae08213b6d9d4bc9a7f8502855e624"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/53xxx/CVE-2023-53684.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53684","state":"PUBLISHED","datePublished":"2025-10-07T15:21:37.413Z","dateUpdated":"2026-05-11T19:49:55.229Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-10-07T15:16:59.665Z"},"containers":{"cna":{"title":"xfrm: Zero padding when dumping algos and encap","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: Zero padding when dumping algos and encap\n\nWhen copying data to user-space we should ensure that only valid\ndata is copied over.  Padding in structures may be filled with\nrandom (possibly sensitve) data and should never be given directly\nto user-space.\n\nThis patch fixes the copying of xfrm algorithms and the encap\ntemplate in xfrm_user so that padding is zeroed."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c7a5899eb26e2a4d516d53f65b6dd67be2228041","status":"affected","lessThan":"0725daaa9a879388ed312110f62dbd5ea2d75f8f","versionType":"git"},{"version":"c7a5899eb26e2a4d516d53f65b6dd67be2228041","status":"affected","lessThan":"5218af4ad5d8948faac19f71583bcd786c3852df","versionType":"git"},{"version":"c7a5899eb26e2a4d516d53f65b6dd67be2228041","status":"affected","lessThan":"1a351e26cc010d6991fbbd5701ac16581372e26f","versionType":"git"},{"version":"c7a5899eb26e2a4d516d53f65b6dd67be2228041","status":"affected","lessThan":"8222d5910dae08213b6d9d4bc9a7f8502855e624","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/xfrm/xfrm_user.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.11","versionType":"semver"},{"version":"5.15.106","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.23","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2.10","status":"unaffected","lessThanOrEqual":"6.2.*","versionType":"semver"},{"version":"6.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/xfrm/xfrm_user.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/0725daaa9a879388ed312110f62dbd5ea2d75f8f"},{"url":"https://git.kernel.org/stable/c/5218af4ad5d8948faac19f71583bcd786c3852df"},{"url":"https://git.kernel.org/stable/c/1a351e26cc010d6991fbbd5701ac16581372e26f"},{"url":"https://git.kernel.org/stable/c/8222d5910dae08213b6d9d4bc9a7f8502855e624"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:49:55.229Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.106"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"6.1.23"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"6.2.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"6.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}