{"id":"CVE-2023-53681","state":"PUBLISHED","title":"bcache: Fix __bch_btree_node_alloc to make the failure behavior consistent","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbcache: Fix __bch_btree_node_alloc to make the failure behavior consistent\n\nIn some specific situations, the return value of __bch_btree_node_alloc\nmay be NULL. This may lead to a potential NULL pointer dereference in\ncaller function like a calling chain :\nbtree_split->bch_btree_node_alloc->__bch_btree_node_alloc.\n\nFix it by initializing the return value in __bch_btree_node_alloc.","publishedAt":"2025-10-07T15:21:35.315Z","updatedAt":"2026-05-11T19:49:51.739Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"cafe563591446cf80bfbc2fe3bc72a2e36cf1060","status":"affected","lessThan":"587b4e8bb5dac682f09280ab35db4632b29d5ac4","versionType":"git"},{"version":"cafe563591446cf80bfbc2fe3bc72a2e36cf1060","status":"affected","lessThan":"b070f29a61436f6f8a2e3abc7ea4f4be81695198","versionType":"git"},{"version":"cafe563591446cf80bfbc2fe3bc72a2e36cf1060","status":"affected","lessThan":"a4405f6ee03323410d7b10966fd67b35f71b1944","versionType":"git"},{"version":"cafe563591446cf80bfbc2fe3bc72a2e36cf1060","status":"affected","lessThan":"f67b0e3081f2a24170280a33ac66f6b112083c03","versionType":"git"},{"version":"cafe563591446cf80bfbc2fe3bc72a2e36cf1060","status":"affected","lessThan":"7ecea5ce3dc17339c280c75b58ac93d8c8620d9f","versionType":"git"},{"version":"cafe563591446cf80bfbc2fe3bc72a2e36cf1060","status":"affected","lessThan":"4514847aee18d9391a0cf3aad75d3567c72795a4","versionType":"git"},{"version":"cafe563591446cf80bfbc2fe3bc72a2e36cf1060","status":"affected","lessThan":"80fca8a10b604afad6c14213fdfd816c4eda3ee4","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/bcache/btree.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.10","versionType":"semver"},{"version":"4.19.291","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.253","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.188","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.121","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.39","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.4.4","status":"unaffected","lessThanOrEqual":"6.4.*","versionType":"semver"},{"version":"6.5","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/bcache/btree.c"]}],"references":["https://git.kernel.org/stable/c/587b4e8bb5dac682f09280ab35db4632b29d5ac4","https://git.kernel.org/stable/c/b070f29a61436f6f8a2e3abc7ea4f4be81695198","https://git.kernel.org/stable/c/a4405f6ee03323410d7b10966fd67b35f71b1944","https://git.kernel.org/stable/c/f67b0e3081f2a24170280a33ac66f6b112083c03","https://git.kernel.org/stable/c/7ecea5ce3dc17339c280c75b58ac93d8c8620d9f","https://git.kernel.org/stable/c/4514847aee18d9391a0cf3aad75d3567c72795a4","https://git.kernel.org/stable/c/80fca8a10b604afad6c14213fdfd816c4eda3ee4"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/53xxx/CVE-2023-53681.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53681","state":"PUBLISHED","datePublished":"2025-10-07T15:21:35.315Z","dateUpdated":"2026-05-11T19:49:51.739Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-10-07T15:16:59.664Z"},"containers":{"cna":{"title":"bcache: Fix __bch_btree_node_alloc to make the failure behavior consistent","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbcache: Fix __bch_btree_node_alloc to make the failure behavior consistent\n\nIn some specific situations, the return value of __bch_btree_node_alloc\nmay be NULL. This may lead to a potential NULL pointer dereference in\ncaller function like a calling chain :\nbtree_split->bch_btree_node_alloc->__bch_btree_node_alloc.\n\nFix it by initializing the return value in __bch_btree_node_alloc."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"cafe563591446cf80bfbc2fe3bc72a2e36cf1060","status":"affected","lessThan":"587b4e8bb5dac682f09280ab35db4632b29d5ac4","versionType":"git"},{"version":"cafe563591446cf80bfbc2fe3bc72a2e36cf1060","status":"affected","lessThan":"b070f29a61436f6f8a2e3abc7ea4f4be81695198","versionType":"git"},{"version":"cafe563591446cf80bfbc2fe3bc72a2e36cf1060","status":"affected","lessThan":"a4405f6ee03323410d7b10966fd67b35f71b1944","versionType":"git"},{"version":"cafe563591446cf80bfbc2fe3bc72a2e36cf1060","status":"affected","lessThan":"f67b0e3081f2a24170280a33ac66f6b112083c03","versionType":"git"},{"version":"cafe563591446cf80bfbc2fe3bc72a2e36cf1060","status":"affected","lessThan":"7ecea5ce3dc17339c280c75b58ac93d8c8620d9f","versionType":"git"},{"version":"cafe563591446cf80bfbc2fe3bc72a2e36cf1060","status":"affected","lessThan":"4514847aee18d9391a0cf3aad75d3567c72795a4","versionType":"git"},{"version":"cafe563591446cf80bfbc2fe3bc72a2e36cf1060","status":"affected","lessThan":"80fca8a10b604afad6c14213fdfd816c4eda3ee4","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/bcache/btree.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.10","versionType":"semver"},{"version":"4.19.291","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.253","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.188","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.121","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.39","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.4.4","status":"unaffected","lessThanOrEqual":"6.4.*","versionType":"semver"},{"version":"6.5","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/bcache/btree.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/587b4e8bb5dac682f09280ab35db4632b29d5ac4"},{"url":"https://git.kernel.org/stable/c/b070f29a61436f6f8a2e3abc7ea4f4be81695198"},{"url":"https://git.kernel.org/stable/c/a4405f6ee03323410d7b10966fd67b35f71b1944"},{"url":"https://git.kernel.org/stable/c/f67b0e3081f2a24170280a33ac66f6b112083c03"},{"url":"https://git.kernel.org/stable/c/7ecea5ce3dc17339c280c75b58ac93d8c8620d9f"},{"url":"https://git.kernel.org/stable/c/4514847aee18d9391a0cf3aad75d3567c72795a4"},{"url":"https://git.kernel.org/stable/c/80fca8a10b604afad6c14213fdfd816c4eda3ee4"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:49:51.739Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"4.19.291"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"5.4.253"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"5.10.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"5.15.121"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"6.1.39"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"6.4.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10","versionEndExcluding":"6.5"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}