{ "dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": { "cveId": "CVE-2024-40962", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-07-12T12:17:45.594Z", "datePublished": "2024-07-12T12:32:03.316Z", "dateUpdated": "2024-09-11T17:34:23.463Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-07-15T06:52:17.214Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: zoned: allocate dummy checksums for zoned NODATASUM writes\n\nShin'ichiro reported that when he's running fstests' test-case\nbtrfs/167 on emulated zoned devices, he's seeing the following NULL\npointer dereference in 'btrfs_zone_finish_endio()':\n\n Oops: general protection fault, probably for non-canonical address 0xdffffc0000000011: 0000 [#1] PREEMPT SMP KASAN NOPTI\n KASAN: null-ptr-deref in range [0x0000000000000088-0x000000000000008f]\n CPU: 4 PID: 2332440 Comm: kworker/u80:15 Tainted: G W 6.10.0-rc2-kts+ #4\n Hardware name: Supermicro Super Server/X11SPi-TF, BIOS 3.3 02/21/2020\n Workqueue: btrfs-endio-write btrfs_work_helper [btrfs]\n RIP: 0010:btrfs_zone_finish_endio.part.0+0x34/0x160 [btrfs]\n\n RSP: 0018:ffff88867f107a90 EFLAGS: 00010206\n RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff893e5534\n RDX: 0000000000000011 RSI: 0000000000000004 RDI: 0000000000000088\n RBP: 0000000000000002 R08: 0000000000000001 R09: ffffed1081696028\n R10: ffff88840b4b0143 R11: ffff88834dfff600 R12: ffff88840b4b0000\n R13: 0000000000020000 R14: 0000000000000000 R15: ffff888530ad5210\n FS: 0000000000000000(0000) GS:ffff888e3f800000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 00007f87223fff38 CR3: 00000007a7c6a002 CR4: 00000000007706f0\n DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n PKRU: 55555554\n Call Trace:\n \n ? __die_body.cold+0x19/0x27\n ? die_addr+0x46/0x70\n ? exc_general_protection+0x14f/0x250\n ? asm_exc_general_protection+0x26/0x30\n ? do_raw_read_unlock+0x44/0x70\n ? btrfs_zone_finish_endio.part.0+0x34/0x160 [btrfs]\n btrfs_finish_one_ordered+0x5d9/0x19a0 [btrfs]\n ? __pfx_lock_release+0x10/0x10\n ? do_raw_write_lock+0x90/0x260\n ? __pfx_do_raw_write_lock+0x10/0x10\n ? __pfx_btrfs_finish_one_ordered+0x10/0x10 [btrfs]\n ? _raw_write_unlock+0x23/0x40\n ? btrfs_finish_ordered_zoned+0x5a9/0x850 [btrfs]\n ? lock_acquire+0x435/0x500\n btrfs_work_helper+0x1b1/0xa70 [btrfs]\n ? __schedule+0x10a8/0x60b0\n ? __pfx___might_resched+0x10/0x10\n process_one_work+0x862/0x1410\n ? __pfx_lock_acquire+0x10/0x10\n ? __pfx_process_one_work+0x10/0x10\n ? assign_work+0x16c/0x240\n worker_thread+0x5e6/0x1010\n ? __pfx_worker_thread+0x10/0x10\n kthread+0x2c3/0x3a0\n ? trace_irq_enable.constprop.0+0xce/0x110\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x31/0x70\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1a/0x30\n \n\nEnabling CONFIG_BTRFS_ASSERT revealed the following assertion to\ntrigger:\n\n assertion failed: !list_empty(&ordered->list), in fs/btrfs/zoned.c:1815\n\nThis indicates, that we're missing the checksums list on the\nordered_extent. As btrfs/167 is doing a NOCOW write this is to be\nexpected.\n\nFurther analysis with drgn confirmed the assumption:\n\n >>> inode = prog.crashed_thread().stack_trace()[11]['ordered'].inode\n >>> btrfs_inode = drgn.container_of(inode, \"struct btrfs_inode\", \\\n \t\t\t\t\"vfs_inode\")\n >>> print(btrfs_inode.flags)\n (u32)1\n\nAs zoned emulation mode simulates conventional zones on regular devices,\nwe cannot use zone-append for writing. But we're only attaching dummy\nchecksums if we're doing a zone-append write.\n\nSo for NOCOW zoned data writes on conventional zones, also attach a\ndummy checksum." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/btrfs/bio.c" ], "versions": [ { "version": "cbfce4c7fbde", "lessThan": "082b3d4e7889", "status": "affected", "versionType": "git" }, { "version": "cbfce4c7fbde", "lessThan": "25cfe59f4470", "status": "affected", "versionType": "git" }, { "version": "cbfce4c7fbde", "lessThan": "cebae292e0c3", "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/btrfs/bio.c" ], "versions": [ { "version": "6.5", "status": "affected" }, { "version": "0", "lessThan": "6.5", "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/082b3d4e788953a3ff42ecdb70c4210149076285" }, { "url": "https://git.kernel.org/stable/c/25cfe59f4470a051d1b80f51fa0ca3a5048e4a19" }, { "url": "https://git.kernel.org/stable/c/cebae292e0c32a228e8f2219c270a7237be24a6a" } ], "title": "btrfs: zoned: allocate dummy checksums for zoned NODATASUM writes", "x_generator": { "engine": "bippy-c9c4e1df01b2" } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T04:39:55.986Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/082b3d4e788953a3ff42ecdb70c4210149076285", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/25cfe59f4470a051d1b80f51fa0ca3a5048e4a19", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/cebae292e0c32a228e8f2219c270a7237be24a6a", "tags": [ "x_transferred" ] } ] }, { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-40962", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-09-10T17:03:23.008786Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:34:23.463Z" } } ] } }