{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53536","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-10-04T15:14:15.919Z","datePublished":"2025-10-04T15:16:47.304Z","dateUpdated":"2026-05-11T19:46:52.350Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:46:52.350Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nblk-crypto: make blk_crypto_evict_key() more robust\n\nIf blk_crypto_evict_key() sees that the key is still in-use (due to a\nbug) or that ->keyslot_evict failed, it currently just returns while\nleaving the key linked into the keyslot management structures.\n\nHowever, blk_crypto_evict_key() is only called in contexts such as inode\neviction where failure is not an option.  So actually the caller\nproceeds with freeing the blk_crypto_key regardless of the return value\nof blk_crypto_evict_key().\n\nThese two assumptions don't match, and the result is that there can be a\nuse-after-free in blk_crypto_reprogram_all_keys() after one of these\nerrors occurs.  (Note, these errors *shouldn't* happen; we're just\ntalking about what happens if they do anyway.)\n\nFix this by making blk_crypto_evict_key() unlink the key from the\nkeyslot management structures even on failure.\n\nAlso improve some comments."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/blk-crypto-profile.c","block/blk-crypto.c"],"versions":[{"version":"1b2628397058ebce7277480960b29c788138de90","lessThan":"701a8220762ff90615dc91d3543f789391b63298","status":"affected","versionType":"git"},{"version":"1b2628397058ebce7277480960b29c788138de90","lessThan":"5bb4005fb667c6e2188fa87950f8d5faf2994410","status":"affected","versionType":"git"},{"version":"1b2628397058ebce7277480960b29c788138de90","lessThan":"64ef787bb1588475163069c2e62fdd8f6c27b1f6","status":"affected","versionType":"git"},{"version":"1b2628397058ebce7277480960b29c788138de90","lessThan":"809a5be62e92a444a3c3d7b9f438019d0b322f55","status":"affected","versionType":"git"},{"version":"1b2628397058ebce7277480960b29c788138de90","lessThan":"5c62852942667c613de0458fc797c5b8c36112b5","status":"affected","versionType":"git"},{"version":"1b2628397058ebce7277480960b29c788138de90","lessThan":"5c7cb94452901a93e90c2230632e2c12a681bc92","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/blk-crypto-profile.c","block/blk-crypto.c"],"versions":[{"version":"5.8","status":"affected"},{"version":"0","lessThan":"5.8","status":"unaffected","versionType":"semver"},{"version":"5.10.180","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.111","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.28","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.2.15","lessThanOrEqual":"6.2.*","status":"unaffected","versionType":"semver"},{"version":"6.3.2","lessThanOrEqual":"6.3.*","status":"unaffected","versionType":"semver"},{"version":"6.4","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":"5.8","versionEndExcluding":"5.10.180"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"5.15.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.1.28"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.2.15"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.3.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.4"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/701a8220762ff90615dc91d3543f789391b63298"},{"url":"https://git.kernel.org/stable/c/5bb4005fb667c6e2188fa87950f8d5faf2994410"},{"url":"https://git.kernel.org/stable/c/64ef787bb1588475163069c2e62fdd8f6c27b1f6"},{"url":"https://git.kernel.org/stable/c/809a5be62e92a444a3c3d7b9f438019d0b322f55"},{"url":"https://git.kernel.org/stable/c/5c62852942667c613de0458fc797c5b8c36112b5"},{"url":"https://git.kernel.org/stable/c/5c7cb94452901a93e90c2230632e2c12a681bc92"}],"title":"blk-crypto: make blk_crypto_evict_key() more robust","x_generator":{"engine":"bippy-1.2.0"}}}}