{"id":"CVE-2024-53167","revision":"050c70ee5e344cab8520900827571df2","records":[{"revision":"050c70ee5e344cab8520900827571df2","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2024-53167","aliases":[],"title":"nfs/blocklayout: Don't attempt unregister for invalid block device","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfs/blocklayout: Don't attempt unregister for invalid block device\n\nSince commit d869da91cccb (\"nfs/blocklayout: Fix premature PR key\nunregistration\") an unmount of a pNFS SCSI layout-enabled NFS may\ndereference a NULL block_device in:\n\n  bl_unregister_scsi+0x16/0xe0 [blocklayoutdriver]\n  bl_free_device+0x70/0x80 [blocklayoutdriver]\n  bl_free_deviceid_node+0x12/0x30 [blocklayoutdriver]\n  nfs4_put_deviceid_node+0x60/0xc0 [nfsv4]\n  nfs4_deviceid_purge_client+0x132/0x190 [nfsv4]\n  unset_pnfs_layoutdriver+0x59/0x60 [nfsv4]\n  nfs4_destroy_server+0x36/0x70 [nfsv4]\n  nfs_free_server+0x23/0xe0 [nfs]\n  deactivate_locked_super+0x30/0xb0\n  cleanup_mnt+0xba/0x150\n  task_work_run+0x59/0x90\n  syscall_exit_to_user_mode+0x217/0x220\n  do_syscall_64+0x8e/0x160\n\nThis happens because even though we were able to create the\nnfs4_deviceid_node, the lookup for the device was unable to attach the\nblock device to the pnfs_block_dev.\n\nIf we never found a block device to register, we can avoid this case with\nthe PNFS_BDEV_REGISTERED flag.  Move the deref behind the test for the\nflag.","state":0,"publishedAt":"2024-12-27T13:49:13.201+00:00","modifiedAt":"2026-10-15T21:41:46.787+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                        \"fs/nfs/blocklayout/dev.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"d869da91cccb90320e101a2758f1e2b3803ade5c\",\n                            \"lessThan\": \"3402704a424f34bbcca7f4a4503859357f422217\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d869da91cccb90320e101a2758f1e2b3803ade5c\",\n                            \"lessThan\": \"faa4bacfaeed827a4ca8cb8529a3ce65a9e8ef46\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d869da91cccb90320e101a2758f1e2b3803ade5c\",\n                            \"lessThan\": \"3a4ce14d9a6b868e0787e4582420b721c04ee41e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\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                        \"fs/nfs/blocklayout/dev.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.11\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.11\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.11.11\",\n                            \"lessThanOrEqual\": \"6.11.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.2\",\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":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/3402704a424f34bbcca7f4a4503859357f422217","https://git.kernel.org/stable/c/faa4bacfaeed827a4ca8cb8529a3ce65a9e8ef46","https://git.kernel.org/stable/c/3a4ce14d9a6b868e0787e4582420b721c04ee41e"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-53167","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-53167","identifiers":["CVE-2024-53167"]},"retained":false,"historicalAffected":[]}],"coverage":[]}