{"id":"CVE-2024-35832","state":"PUBLISHED","title":"bcachefs: kvfree bch_fs::snapshots in bch2_fs_snapshots_exit","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbcachefs: kvfree bch_fs::snapshots in bch2_fs_snapshots_exit\n\nbch_fs::snapshots is allocated by kvzalloc in __snapshot_t_mut.\nIt should be freed by kvfree not kfree.\nOr umount will triger:\n\n[  406.829178 ] BUG: unable to handle page fault for address: ffffe7b487148008\n[  406.830676 ] #PF: supervisor read access in kernel mode\n[  406.831643 ] #PF: error_code(0x0000) - not-present page\n[  406.832487 ] PGD 0 P4D 0\n[  406.832898 ] Oops: 0000 [#1] PREEMPT SMP PTI\n[  406.833512 ] CPU: 2 PID: 1754 Comm: umount Kdump: loaded Tainted: G           OE      6.7.0-rc7-custom+ #90\n[  406.834746 ] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 04/01/2014\n[  406.835796 ] RIP: 0010:kfree+0x62/0x140\n[  406.836197 ] Code: 80 48 01 d8 0f 82 e9 00 00 00 48 c7 c2 00 00 00 80 48 2b 15 78 9f 1f 01 48 01 d0 48 c1 e8 0c 48 c1 e0 06 48 03 05 56 9f 1f 01 <48> 8b 50 08 48 89 c7 f6 c2 01 0f 85 b0 00 00 00 66 90 48 8b 07 f6\n[  406.837810 ] RSP: 0018:ffffb9d641607e48 EFLAGS: 00010286\n[  406.838213 ] RAX: ffffe7b487148000 RBX: ffffb9d645200000 RCX: ffffb9d641607dc4\n[  406.838738 ] RDX: 000065bb00000000 RSI: ffffffffc0d88b84 RDI: ffffb9d645200000\n[  406.839217 ] RBP: ffff9a4625d00068 R08: 0000000000000001 R09: 0000000000000001\n[  406.839650 ] R10: 0000000000000001 R11: 000000000000001f R12: ffff9a4625d4da80\n[  406.840055 ] R13: ffff9a4625d00000 R14: ffffffffc0e2eb20 R15: 0000000000000000\n[  406.840451 ] FS:  00007f0a264ffb80(0000) GS:ffff9a4e2d500000(0000) knlGS:0000000000000000\n[  406.840851 ] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  406.841125 ] CR2: ffffe7b487148008 CR3: 000000018c4d2000 CR4: 00000000000006f0\n[  406.841464 ] Call Trace:\n[  406.841583 ]  <TASK>\n[  406.841682 ]  ? __die+0x1f/0x70\n[  406.841828 ]  ? page_fault_oops+0x159/0x470\n[  406.842014 ]  ? fixup_exception+0x22/0x310\n[  406.842198 ]  ? exc_page_fault+0x1ed/0x200\n[  406.842382 ]  ? asm_exc_page_fault+0x22/0x30\n[  406.842574 ]  ? bch2_fs_release+0x54/0x280 [bcachefs]\n[  406.842842 ]  ? kfree+0x62/0x140\n[  406.842988 ]  ? kfree+0x104/0x140\n[  406.843138 ]  bch2_fs_release+0x54/0x280 [bcachefs]\n[  406.843390 ]  kobject_put+0xb7/0x170\n[  406.843552 ]  deactivate_locked_super+0x2f/0xa0\n[  406.843756 ]  cleanup_mnt+0xba/0x150\n[  406.843917 ]  task_work_run+0x59/0xa0\n[  406.844083 ]  exit_to_user_mode_prepare+0x197/0x1a0\n[  406.844302 ]  syscall_exit_to_user_mode+0x16/0x40\n[  406.844510 ]  do_syscall_64+0x4e/0xf0\n[  406.844675 ]  entry_SYSCALL_64_after_hwframe+0x6e/0x76\n[  406.844907 ] RIP: 0033:0x7f0a2664e4fb","publishedAt":"2024-05-17T13:48:20.877Z","updatedAt":"2026-05-11T20:11:51.836Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1c6fdbd8f2465ddfb73a01ec620cbf3d14044e1a","status":"affected","lessThan":"56590678791119b9a655202e49898edfb9307271","versionType":"git"},{"version":"1c6fdbd8f2465ddfb73a01ec620cbf3d14044e1a","status":"affected","lessThan":"369acf97d6fd5da620d053d0f1878ffe32eff555","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/bcachefs/snapshot.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.7","versionType":"semver"},{"version":"6.7.5","status":"unaffected","lessThanOrEqual":"6.7.*","versionType":"semver"},{"version":"6.8","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/bcachefs/snapshot.c"]}],"references":["https://git.kernel.org/stable/c/56590678791119b9a655202e49898edfb9307271","https://git.kernel.org/stable/c/369acf97d6fd5da620d053d0f1878ffe32eff555"],"weaknesses":[],"ingestedAt":"2026-10-29T20:07:30.303Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/35xxx/CVE-2024-35832.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-35832","state":"PUBLISHED","datePublished":"2024-05-17T13:48:20.877Z","dateUpdated":"2026-05-11T20:11:51.836Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-05-17T12:19:12.348Z"},"containers":{"cna":{"title":"bcachefs: kvfree bch_fs::snapshots in bch2_fs_snapshots_exit","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbcachefs: kvfree bch_fs::snapshots in bch2_fs_snapshots_exit\n\nbch_fs::snapshots is allocated by kvzalloc in __snapshot_t_mut.\nIt should be freed by kvfree not kfree.\nOr umount will triger:\n\n[  406.829178 ] BUG: unable to handle page fault for address: ffffe7b487148008\n[  406.830676 ] #PF: supervisor read access in kernel mode\n[  406.831643 ] #PF: error_code(0x0000) - not-present page\n[  406.832487 ] PGD 0 P4D 0\n[  406.832898 ] Oops: 0000 [#1] PREEMPT SMP PTI\n[  406.833512 ] CPU: 2 PID: 1754 Comm: umount Kdump: loaded Tainted: G           OE      6.7.0-rc7-custom+ #90\n[  406.834746 ] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 04/01/2014\n[  406.835796 ] RIP: 0010:kfree+0x62/0x140\n[  406.836197 ] Code: 80 48 01 d8 0f 82 e9 00 00 00 48 c7 c2 00 00 00 80 48 2b 15 78 9f 1f 01 48 01 d0 48 c1 e8 0c 48 c1 e0 06 48 03 05 56 9f 1f 01 <48> 8b 50 08 48 89 c7 f6 c2 01 0f 85 b0 00 00 00 66 90 48 8b 07 f6\n[  406.837810 ] RSP: 0018:ffffb9d641607e48 EFLAGS: 00010286\n[  406.838213 ] RAX: ffffe7b487148000 RBX: ffffb9d645200000 RCX: ffffb9d641607dc4\n[  406.838738 ] RDX: 000065bb00000000 RSI: ffffffffc0d88b84 RDI: ffffb9d645200000\n[  406.839217 ] RBP: ffff9a4625d00068 R08: 0000000000000001 R09: 0000000000000001\n[  406.839650 ] R10: 0000000000000001 R11: 000000000000001f R12: ffff9a4625d4da80\n[  406.840055 ] R13: ffff9a4625d00000 R14: ffffffffc0e2eb20 R15: 0000000000000000\n[  406.840451 ] FS:  00007f0a264ffb80(0000) GS:ffff9a4e2d500000(0000) knlGS:0000000000000000\n[  406.840851 ] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  406.841125 ] CR2: ffffe7b487148008 CR3: 000000018c4d2000 CR4: 00000000000006f0\n[  406.841464 ] Call Trace:\n[  406.841583 ]  <TASK>\n[  406.841682 ]  ? __die+0x1f/0x70\n[  406.841828 ]  ? page_fault_oops+0x159/0x470\n[  406.842014 ]  ? fixup_exception+0x22/0x310\n[  406.842198 ]  ? exc_page_fault+0x1ed/0x200\n[  406.842382 ]  ? asm_exc_page_fault+0x22/0x30\n[  406.842574 ]  ? bch2_fs_release+0x54/0x280 [bcachefs]\n[  406.842842 ]  ? kfree+0x62/0x140\n[  406.842988 ]  ? kfree+0x104/0x140\n[  406.843138 ]  bch2_fs_release+0x54/0x280 [bcachefs]\n[  406.843390 ]  kobject_put+0xb7/0x170\n[  406.843552 ]  deactivate_locked_super+0x2f/0xa0\n[  406.843756 ]  cleanup_mnt+0xba/0x150\n[  406.843917 ]  task_work_run+0x59/0xa0\n[  406.844083 ]  exit_to_user_mode_prepare+0x197/0x1a0\n[  406.844302 ]  syscall_exit_to_user_mode+0x16/0x40\n[  406.844510 ]  do_syscall_64+0x4e/0xf0\n[  406.844675 ]  entry_SYSCALL_64_after_hwframe+0x6e/0x76\n[  406.844907 ] RIP: 0033:0x7f0a2664e4fb"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1c6fdbd8f2465ddfb73a01ec620cbf3d14044e1a","status":"affected","lessThan":"56590678791119b9a655202e49898edfb9307271","versionType":"git"},{"version":"1c6fdbd8f2465ddfb73a01ec620cbf3d14044e1a","status":"affected","lessThan":"369acf97d6fd5da620d053d0f1878ffe32eff555","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/bcachefs/snapshot.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.7","versionType":"semver"},{"version":"6.7.5","status":"unaffected","lessThanOrEqual":"6.7.*","versionType":"semver"},{"version":"6.8","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/bcachefs/snapshot.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/56590678791119b9a655202e49898edfb9307271"},{"url":"https://git.kernel.org/stable/c/369acf97d6fd5da620d053d0f1878ffe32eff555"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T20:11:51.836Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.7.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.8"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/56590678791119b9a655202e49898edfb9307271","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/369acf97d6fd5da620d053d0f1878ffe32eff555","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T03:21:47.614Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2024-35832","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-09-10T15:42:15.715605Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-09-11T17:33:19.899Z"}}]}}}