{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "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": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "fs/bcachefs/snapshot.c"
               ],
               "versions": [
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "565906787911",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "369acf97d6fd",
                     "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/bcachefs/snapshot.c"
               ],
               "versions": [
                  {
                     "version": "6.7.5",
                     "lessThanOrEqual": "6.7.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.8",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/56590678791119b9a655202e49898edfb9307271"
            },
            {
               "url": "https://git.kernel.org/stable/c/369acf97d6fd5da620d053d0f1878ffe32eff555"
            }
         ],
         "title": "bcachefs: kvfree bch_fs::snapshots in bch2_fs_snapshots_exit",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-35832",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}