{"id":"CVE-2023-53684","title":"xfrm: Zero padding when dumping algos and encap","summary":"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 fil…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= c7a5899eb26e2a4d516d53f65b6dd67be2228041 < 0725daaa9a879388ed312110f62dbd5ea2d75f8f","Linux >= c7a5899eb26e2a4d516d53f65b6dd67be2228041 < 5218af4ad5d8948faac19f71583bcd786c3852df","Linux >= c7a5899eb26e2a4d516d53f65b6dd67be2228041 < 1a351e26cc010d6991fbbd5701ac16581372e26f","Linux >= c7a5899eb26e2a4d516d53f65b6dd67be2228041 < 8222d5910dae08213b6d9d4bc9a7f8502855e624","Linux 5.11"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T20:27:13.093049Z"},"published":"2025-10-07","updated":"2026-11-05","sourceUpdated":"2026-11-05T20:31:20.944Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-53684","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"}],"tags":["cve.org"],"epss":0.00148,"epssPercentile":0.04026,"ingestedAt":"2026-11-05T22:38:31.826Z","slug":"CVE-2023-53684","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `Linux >= c7a5899eb26e2a4d516d53f65b6dd67be2228041 < 0725daaa9a879388ed312110f62dbd5ea2d75f8f`\n- `Linux >= c7a5899eb26e2a4d516d53f65b6dd67be2228041 < 5218af4ad5d8948faac19f71583bcd786c3852df`\n- `Linux >= c7a5899eb26e2a4d516d53f65b6dd67be2228041 < 1a351e26cc010d6991fbbd5701ac16581372e26f`\n- `Linux >= c7a5899eb26e2a4d516d53f65b6dd67be2228041 < 8222d5910dae08213b6d9d4bc9a7f8502855e624`\n- `Linux 5.11`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}