{ "dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": { "cveId": "CVE-2024-40952", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-07-12T12:17:45.592Z", "datePublished": "2024-07-12T12:31:56.160Z", "dateUpdated": "2024-09-11T17:34:24.609Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-07-15T06:52:05.758Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix NULL pointer dereference in ocfs2_journal_dirty()\n\nbdev->bd_super has been removed and commit 8887b94d9322 change the usage\nfrom bdev->bd_super to b_assoc_map->host->i_sb. This introduces the\nfollowing NULL pointer dereference in ocfs2_journal_dirty() since\nb_assoc_map is still not initialized. This can be easily reproduced by\nrunning xfstests generic/186, which simulate no more credits.\n\n[ 134.351592] BUG: kernel NULL pointer dereference, address: 0000000000000000\n...\n[ 134.355341] RIP: 0010:ocfs2_journal_dirty+0x14f/0x160 [ocfs2]\n...\n[ 134.365071] Call Trace:\n[ 134.365312] \n[ 134.365524] ? __die_body+0x1e/0x60\n[ 134.365868] ? page_fault_oops+0x13d/0x4f0\n[ 134.366265] ? __pfx_bit_wait_io+0x10/0x10\n[ 134.366659] ? schedule+0x27/0xb0\n[ 134.366981] ? exc_page_fault+0x6a/0x140\n[ 134.367356] ? asm_exc_page_fault+0x26/0x30\n[ 134.367762] ? ocfs2_journal_dirty+0x14f/0x160 [ocfs2]\n[ 134.368305] ? ocfs2_journal_dirty+0x13d/0x160 [ocfs2]\n[ 134.368837] ocfs2_create_new_meta_bhs.isra.51+0x139/0x2e0 [ocfs2]\n[ 134.369454] ocfs2_grow_tree+0x688/0x8a0 [ocfs2]\n[ 134.369927] ocfs2_split_and_insert.isra.67+0x35c/0x4a0 [ocfs2]\n[ 134.370521] ocfs2_split_extent+0x314/0x4d0 [ocfs2]\n[ 134.371019] ocfs2_change_extent_flag+0x174/0x410 [ocfs2]\n[ 134.371566] ocfs2_add_refcount_flag+0x3fa/0x630 [ocfs2]\n[ 134.372117] ocfs2_reflink_remap_extent+0x21b/0x4c0 [ocfs2]\n[ 134.372994] ? inode_update_timestamps+0x4a/0x120\n[ 134.373692] ? __pfx_ocfs2_journal_access_di+0x10/0x10 [ocfs2]\n[ 134.374545] ? __pfx_ocfs2_journal_access_di+0x10/0x10 [ocfs2]\n[ 134.375393] ocfs2_reflink_remap_blocks+0xe4/0x4e0 [ocfs2]\n[ 134.376197] ocfs2_remap_file_range+0x1de/0x390 [ocfs2]\n[ 134.376971] ? security_file_permission+0x29/0x50\n[ 134.377644] vfs_clone_file_range+0xfe/0x320\n[ 134.378268] ioctl_file_clone+0x45/0xa0\n[ 134.378853] do_vfs_ioctl+0x457/0x990\n[ 134.379422] __x64_sys_ioctl+0x6e/0xd0\n[ 134.379987] do_syscall_64+0x5d/0x170\n[ 134.380550] entry_SYSCALL_64_after_hwframe+0x76/0x7e\n[ 134.381231] RIP: 0033:0x7fa4926397cb\n[ 134.381786] Code: 73 01 c3 48 8b 0d bd 56 38 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 8d 56 38 00 f7 d8 64 89 01 48\n[ 134.383930] RSP: 002b:00007ffc2b39f7b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\n[ 134.384854] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fa4926397cb\n[ 134.385734] RDX: 00007ffc2b39f7f0 RSI: 000000004020940d RDI: 0000000000000003\n[ 134.386606] RBP: 0000000000000000 R08: 00111a82a4f015bb R09: 00007fa494221000\n[ 134.387476] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\n[ 134.388342] R13: 0000000000f10000 R14: 0000558e844e2ac8 R15: 0000000000f10000\n[ 134.389207] \n\nFix it by only aborting transaction and journal in ocfs2_journal_dirty()\nnow, and leave ocfs2_abort() later when detecting an aborted handle,\ne.g. start next transaction. Also log the handle details in this case." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/ocfs2/journal.c" ], "versions": [ { "version": "8887b94d9322", "lessThan": "0550ad87711f", "status": "affected", "versionType": "git" }, { "version": "8887b94d9322", "lessThan": "72663d3e0909", "status": "affected", "versionType": "git" }, { "version": "8887b94d9322", "lessThan": "58f7e1e2c9e7", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/ocfs2/journal.c" ], "versions": [ { "version": "6.6", "status": "affected" }, { "version": "0", "lessThan": "6.6", "status": "unaffected", "versionType": "custom" }, { "version": "6.6.36", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.9.7", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.10", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/0550ad87711f815b3d73e487ec58ca7d8f56edbc" }, { "url": "https://git.kernel.org/stable/c/72663d3e09091f431a0774227ca207c0358362dd" }, { "url": "https://git.kernel.org/stable/c/58f7e1e2c9e72c7974054c64c3abeac81c11f822" } ], "title": "ocfs2: fix NULL pointer dereference in ocfs2_journal_dirty()", "x_generator": { "engine": "bippy-c9c4e1df01b2" } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T04:39:55.281Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/0550ad87711f815b3d73e487ec58ca7d8f56edbc", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/72663d3e09091f431a0774227ca207c0358362dd", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/58f7e1e2c9e72c7974054c64c3abeac81c11f822", "tags": [ "x_transferred" ] } ] }, { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-40952", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-09-10T17:03:55.352305Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:34:24.609Z" } } ] } }