{"id":"CVE-2024-48881","revision":"a92e0d4c510e49dead865684bc5221ad","records":[{"revision":"a92e0d4c510e49dead865684bc5221ad","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2024-48881","aliases":[],"title":"bcache: revert replacing IS_ERR_OR_NULL with IS_ERR again","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbcache: revert replacing IS_ERR_OR_NULL with IS_ERR again\n\nCommit 028ddcac477b (\"bcache: Remove unnecessary NULL point check in\nnode allocations\") leads a NULL pointer deference in cache_set_flush().\n\n1721         if (!IS_ERR_OR_NULL(c->root))\n1722                 list_add(&c->root->list, &c->btree_cache);\n\n>From the above code in cache_set_flush(), if previous registration code\nfails before allocating c->root, it is possible c->root is NULL as what\nit is initialized. __bch_btree_node_alloc() never returns NULL but\nc->root is possible to be NULL at above line 1721.\n\nThis patch replaces IS_ERR() by IS_ERR_OR_NULL() to fix this.","state":0,"publishedAt":"2025-01-11T12:25:18.614+00:00","modifiedAt":"2026-10-15T00:53:14.555+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/md/bcache/super.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"0729029e647234fa1a94376b6edffec5c2cd75f6\",\n                            \"lessThan\": \"4379c5828492a4c2a651c8f826a01453bd2b80b0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"db9439cef0b5efccf8021fe89f4953e0f901e85b\",\n                            \"lessThan\": \"336e30f32ae7c043fde0f6fa21586ff30bea9fe2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"991e9c186a8ac6ab272a86e0ddc6f9733c38b867\",\n                            \"lessThan\": \"fb5fee35bdd18316a84b5f30881a24e1415e1464\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"68118c339c6e1e16ae017bef160dbe28a27ae9c8\",\n                            \"lessThan\": \"5202391970ffbf81975251b3526b890ba027b715\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"028ddcac477b691dd9205c92f991cc15259d033e\",\n                            \"lessThan\": \"cc05aa2c0117e20fa25a3c0d915f98b8f2e78667\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"028ddcac477b691dd9205c92f991cc15259d033e\",\n                            \"lessThan\": \"5e0e913624bcd24f3de414475018d3023f060ee1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"028ddcac477b691dd9205c92f991cc15259d033e\",\n                            \"lessThan\": \"b2e382ae12a63560fca35050498e19e760adf8c0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fe75e8a0c20127a8dc95704f1a7ad6b82c9a0ef8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0cabf9e164660e8d66c4810396046383a1110a69\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5.4.251\",\n                            \"lessThan\": \"5.4.287\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.188\",\n                            \"lessThan\": \"5.10.231\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.121\",\n                            \"lessThan\": \"5.15.174\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.39\",\n                            \"lessThan\": \"6.1.120\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"4.19.291\",\n                            \"lessThan\": \"4.20\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.4.4\",\n                            \"lessThan\": \"6.5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/md/bcache/super.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.5\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.5\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.4.287\",\n                            \"lessThanOrEqual\": \"5.4.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.231\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.174\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.120\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.66\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.5\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.13\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/4379c5828492a4c2a651c8f826a01453bd2b80b0","https://git.kernel.org/stable/c/336e30f32ae7c043fde0f6fa21586ff30bea9fe2","https://git.kernel.org/stable/c/fb5fee35bdd18316a84b5f30881a24e1415e1464","https://git.kernel.org/stable/c/5202391970ffbf81975251b3526b890ba027b715","https://git.kernel.org/stable/c/cc05aa2c0117e20fa25a3c0d915f98b8f2e78667","https://git.kernel.org/stable/c/5e0e913624bcd24f3de414475018d3023f060ee1","https://git.kernel.org/stable/c/b2e382ae12a63560fca35050498e19e760adf8c0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-48881","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-48881","identifiers":["CVE-2024-48881"]},"retained":false,"historicalAffected":[]}],"coverage":[]}