CVE-2023-53538 (GCVE-0-2023-53538)

Vulnerability from cvelistv5 – Published: 2025-10-04 15:16 – Updated: 2026-10-03 10:54
VLAI
Title
btrfs: insert tree mod log move in push_node_left
Summary
In the Linux kernel, the following vulnerability has been resolved: btrfs: insert tree mod log move in push_node_left There is a fairly unlikely race condition in tree mod log rewind that can result in a kernel panic which has the following trace: [530.569] BTRFS critical (device sda3): unable to find logical 0 length 4096 [530.585] BTRFS critical (device sda3): unable to find logical 0 length 4096 [530.602] BUG: kernel NULL pointer dereference, address: 0000000000000002 [530.618] #PF: supervisor read access in kernel mode [530.629] #PF: error_code(0x0000) - not-present page [530.641] PGD 0 P4D 0 [530.647] Oops: 0000 [#1] SMP [530.654] CPU: 30 PID: 398973 Comm: below Kdump: loaded Tainted: G S O K 5.12.0-0_fbk13_clang_7455_gb24de3bdb045 #1 [530.680] Hardware name: Quanta Mono Lake-M.2 SATA 1HY9U9Z001G/Mono Lake-M.2 SATA, BIOS F20_3A15 08/16/2017 [530.703] RIP: 0010:__btrfs_map_block+0xaa/0xd00 [530.755] RSP: 0018:ffffc9002c2f7600 EFLAGS: 00010246 [530.767] RAX: ffffffffffffffea RBX: ffff888292e41000 RCX: f2702d8b8be15100 [530.784] RDX: ffff88885fda6fb8 RSI: ffff88885fd973c8 RDI: ffff88885fd973c8 [530.800] RBP: ffff888292e410d0 R08: ffffffff82fd7fd0 R09: 00000000fffeffff [530.816] R10: ffffffff82e57fd0 R11: ffffffff82e57d70 R12: 0000000000000000 [530.832] R13: 0000000000001000 R14: 0000000000001000 R15: ffffc9002c2f76f0 [530.848] FS: 00007f38d64af000(0000) GS:ffff88885fd80000(0000) knlGS:0000000000000000 [530.866] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [530.880] CR2: 0000000000000002 CR3: 00000002b6770004 CR4: 00000000003706e0 [530.896] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [530.912] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [530.928] Call Trace: [530.934] ? btrfs_printk+0x13b/0x18c [530.943] ? btrfs_bio_counter_inc_blocked+0x3d/0x130 [530.955] btrfs_map_bio+0x75/0x330 [530.963] ? kmem_cache_alloc+0x12a/0x2d0 [530.973] ? btrfs_submit_metadata_bio+0x63/0x100 [530.984] btrfs_submit_metadata_bio+0xa4/0x100 [530.995] submit_extent_page+0x30f/0x360 [531.004] read_extent_buffer_pages+0x49e/0x6d0 [531.015] ? submit_extent_page+0x360/0x360 [531.025] btree_read_extent_buffer_pages+0x5f/0x150 [531.037] read_tree_block+0x37/0x60 [531.046] read_block_for_search+0x18b/0x410 [531.056] btrfs_search_old_slot+0x198/0x2f0 [531.066] resolve_indirect_ref+0xfe/0x6f0 [531.076] ? ulist_alloc+0x31/0x60 [531.084] ? kmem_cache_alloc_trace+0x12e/0x2b0 [531.095] find_parent_nodes+0x720/0x1830 [531.105] ? ulist_alloc+0x10/0x60 [531.113] iterate_extent_inodes+0xea/0x370 [531.123] ? btrfs_previous_extent_item+0x8f/0x110 [531.134] ? btrfs_search_path_in_tree+0x240/0x240 [531.146] iterate_inodes_from_logical+0x98/0xd0 [531.157] ? btrfs_search_path_in_tree+0x240/0x240 [531.168] btrfs_ioctl_logical_to_ino+0xd9/0x180 [531.179] btrfs_ioctl+0xe2/0x2eb0 This occurs when logical inode resolution takes a tree mod log sequence number, and then while backref walking hits a rewind on a busy node which has the following sequence of tree mod log operations (numbers filled in from a specific example, but they are somewhat arbitrary) REMOVE_WHILE_FREEING slot 532 REMOVE_WHILE_FREEING slot 531 REMOVE_WHILE_FREEING slot 530 ... REMOVE_WHILE_FREEING slot 0 REMOVE slot 455 REMOVE slot 454 REMOVE slot 453 ... REMOVE slot 0 ADD slot 455 ADD slot 454 ADD slot 453 ... ADD slot 0 MOVE src slot 0 -> dst slot 456 nritems 533 REMOVE slot 455 REMOVE slot 454 REMOVE slot 453 ... REMOVE slot 0 When this sequence gets applied via btrfs_tree_mod_log_rewind, it allocates a fresh rewind eb, and first inserts the correct key info for the 533 elements, then overwrites the first 456 of them, then decrements the count by 456 via the add ops, then rewinds the move by doing a memmove from 456:988->0:532. We have never written anything past 532, ---truncated---
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6653 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 57911b8ba814fae01306376a0d02bc7cdc88dc94 , < 7e0ee4cb02e6b485103ecd125743b2818a68993d (git)
Affected: 57911b8ba814fae01306376a0d02bc7cdc88dc94 , < 11f14402fe3437852cb44945b3b9f1bdb4032956 (git)
Affected: 57911b8ba814fae01306376a0d02bc7cdc88dc94 , < 5cead5422a0e3d13b0bcee986c0f5c4ebb94100b (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.7
Unaffected: 0 , < 3.7 (semver)
Unaffected: 6.1.189 , ≤ 6.1.* (semver)
Unaffected: 6.4.4 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/btrfs/ctree.c",
            "fs/btrfs/tree-mod-log.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7e0ee4cb02e6b485103ecd125743b2818a68993d",
              "status": "affected",
              "version": "57911b8ba814fae01306376a0d02bc7cdc88dc94",
              "versionType": "git"
            },
            {
              "lessThan": "11f14402fe3437852cb44945b3b9f1bdb4032956",
              "status": "affected",
              "version": "57911b8ba814fae01306376a0d02bc7cdc88dc94",
              "versionType": "git"
            },
            {
              "lessThan": "5cead5422a0e3d13b0bcee986c0f5c4ebb94100b",
              "status": "affected",
              "version": "57911b8ba814fae01306376a0d02bc7cdc88dc94",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/btrfs/ctree.c",
            "fs/btrfs/tree-mod-log.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.7"
            },
            {
              "lessThan": "3.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.4.*",
              "status": "unaffected",
              "version": "6.4.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.189",
                  "versionStartIncluding": "3.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4.4",
                  "versionStartIncluding": "3.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.5",
                  "versionStartIncluding": "3.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: insert tree mod log move in push_node_left\n\nThere is a fairly unlikely race condition in tree mod log rewind that\ncan result in a kernel panic which has the following trace:\n\n  [530.569] BTRFS critical (device sda3): unable to find logical 0 length 4096\n  [530.585] BTRFS critical (device sda3): unable to find logical 0 length 4096\n  [530.602] BUG: kernel NULL pointer dereference, address: 0000000000000002\n  [530.618] #PF: supervisor read access in kernel mode\n  [530.629] #PF: error_code(0x0000) - not-present page\n  [530.641] PGD 0 P4D 0\n  [530.647] Oops: 0000 [#1] SMP\n  [530.654] CPU: 30 PID: 398973 Comm: below Kdump: loaded Tainted: G S         O  K   5.12.0-0_fbk13_clang_7455_gb24de3bdb045 #1\n  [530.680] Hardware name: Quanta Mono Lake-M.2 SATA 1HY9U9Z001G/Mono Lake-M.2 SATA, BIOS F20_3A15 08/16/2017\n  [530.703] RIP: 0010:__btrfs_map_block+0xaa/0xd00\n  [530.755] RSP: 0018:ffffc9002c2f7600 EFLAGS: 00010246\n  [530.767] RAX: ffffffffffffffea RBX: ffff888292e41000 RCX: f2702d8b8be15100\n  [530.784] RDX: ffff88885fda6fb8 RSI: ffff88885fd973c8 RDI: ffff88885fd973c8\n  [530.800] RBP: ffff888292e410d0 R08: ffffffff82fd7fd0 R09: 00000000fffeffff\n  [530.816] R10: ffffffff82e57fd0 R11: ffffffff82e57d70 R12: 0000000000000000\n  [530.832] R13: 0000000000001000 R14: 0000000000001000 R15: ffffc9002c2f76f0\n  [530.848] FS:  00007f38d64af000(0000) GS:ffff88885fd80000(0000) knlGS:0000000000000000\n  [530.866] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  [530.880] CR2: 0000000000000002 CR3: 00000002b6770004 CR4: 00000000003706e0\n  [530.896] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n  [530.912] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n  [530.928] Call Trace:\n  [530.934]  ? btrfs_printk+0x13b/0x18c\n  [530.943]  ? btrfs_bio_counter_inc_blocked+0x3d/0x130\n  [530.955]  btrfs_map_bio+0x75/0x330\n  [530.963]  ? kmem_cache_alloc+0x12a/0x2d0\n  [530.973]  ? btrfs_submit_metadata_bio+0x63/0x100\n  [530.984]  btrfs_submit_metadata_bio+0xa4/0x100\n  [530.995]  submit_extent_page+0x30f/0x360\n  [531.004]  read_extent_buffer_pages+0x49e/0x6d0\n  [531.015]  ? submit_extent_page+0x360/0x360\n  [531.025]  btree_read_extent_buffer_pages+0x5f/0x150\n  [531.037]  read_tree_block+0x37/0x60\n  [531.046]  read_block_for_search+0x18b/0x410\n  [531.056]  btrfs_search_old_slot+0x198/0x2f0\n  [531.066]  resolve_indirect_ref+0xfe/0x6f0\n  [531.076]  ? ulist_alloc+0x31/0x60\n  [531.084]  ? kmem_cache_alloc_trace+0x12e/0x2b0\n  [531.095]  find_parent_nodes+0x720/0x1830\n  [531.105]  ? ulist_alloc+0x10/0x60\n  [531.113]  iterate_extent_inodes+0xea/0x370\n  [531.123]  ? btrfs_previous_extent_item+0x8f/0x110\n  [531.134]  ? btrfs_search_path_in_tree+0x240/0x240\n  [531.146]  iterate_inodes_from_logical+0x98/0xd0\n  [531.157]  ? btrfs_search_path_in_tree+0x240/0x240\n  [531.168]  btrfs_ioctl_logical_to_ino+0xd9/0x180\n  [531.179]  btrfs_ioctl+0xe2/0x2eb0\n\nThis occurs when logical inode resolution takes a tree mod log sequence\nnumber, and then while backref walking hits a rewind on a busy node\nwhich has the following sequence of tree mod log operations (numbers\nfilled in from a specific example, but they are somewhat arbitrary)\n\n  REMOVE_WHILE_FREEING slot 532\n  REMOVE_WHILE_FREEING slot 531\n  REMOVE_WHILE_FREEING slot 530\n  ...\n  REMOVE_WHILE_FREEING slot 0\n  REMOVE slot 455\n  REMOVE slot 454\n  REMOVE slot 453\n  ...\n  REMOVE slot 0\n  ADD slot 455\n  ADD slot 454\n  ADD slot 453\n  ...\n  ADD slot 0\n  MOVE src slot 0 -\u003e dst slot 456 nritems 533\n  REMOVE slot 455\n  REMOVE slot 454\n  REMOVE slot 453\n  ...\n  REMOVE slot 0\n\nWhen this sequence gets applied via btrfs_tree_mod_log_rewind, it\nallocates a fresh rewind eb, and first inserts the correct key info for\nthe 533 elements, then overwrites the first 456 of them, then decrements\nthe count by 456 via the add ops, then rewinds the move by doing a\nmemmove from 456:988-\u003e0:532. We have never written anything past 532,\n---truncated---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-03T10:54:56.659Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/7e0ee4cb02e6b485103ecd125743b2818a68993d"
        },
        {
          "url": "https://git.kernel.org/stable/c/11f14402fe3437852cb44945b3b9f1bdb4032956"
        },
        {
          "url": "https://git.kernel.org/stable/c/5cead5422a0e3d13b0bcee986c0f5c4ebb94100b"
        }
      ],
      "title": "btrfs: insert tree mod log move in push_node_left",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53538",
    "datePublished": "2025-10-04T15:16:48.694Z",
    "dateReserved": "2025-10-04T15:14:15.919Z",
    "dateUpdated": "2026-10-03T10:54:56.659Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-53538",
      "date": "2026-11-07",
      "epss": "0.00157",
      "percentile": "0.04899"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "fs/btrfs/ctree.c",
                  "fs/btrfs/tree-mod-log.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "7e0ee4cb02e6b485103ecd125743b2818a68993d",
                    "status": "affected",
                    "version": "57911b8ba814fae01306376a0d02bc7cdc88dc94",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "11f14402fe3437852cb44945b3b9f1bdb4032956",
                    "status": "affected",
                    "version": "57911b8ba814fae01306376a0d02bc7cdc88dc94",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "5cead5422a0e3d13b0bcee986c0f5c4ebb94100b",
                    "status": "affected",
                    "version": "57911b8ba814fae01306376a0d02bc7cdc88dc94",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "fs/btrfs/ctree.c",
                  "fs/btrfs/tree-mod-log.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "3.7"
                  },
                  {
                    "lessThan": "3.7",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.189",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.4.*",
                    "status": "unaffected",
                    "version": "6.4.4",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.5",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "5C11A2A4-415F-4652-B7B7-62FD559A1920",
                    "versionEndExcluding": "6.4.4",
                    "versionStartIncluding": "3.7.1",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:3.7:-:*:*:*:*:*:*",
                    "matchCriteriaId": "F482CC77-4452-423A-8A57-523E1AEA1087",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:3.7:rc3:*:*:*:*:*:*",
                    "matchCriteriaId": "1757AD11-8AD5-46C7-A5A8-2B788F15C0DE",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:3.7:rc4:*:*:*:*:*:*",
                    "matchCriteriaId": "1B38B2A5-9033-4960-AA1D-EAB51A006451",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:3.7:rc5:*:*:*:*:*:*",
                    "matchCriteriaId": "A2BA8BA4-4EDA-487C-BD59-1EB8AA4E3712",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:3.7:rc6:*:*:*:*:*:*",
                    "matchCriteriaId": "5C9FE33D-0449-4819-85D9-F63D0D1B9DDA",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:3.7:rc7:*:*:*:*:*:*",
                    "matchCriteriaId": "1DE42C53-831C-4F53-A8F6-386BC02B806A",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:3.7:rc8:*:*:*:*:*:*",
                    "matchCriteriaId": "A2691362-ECBE-4871-8533-EC32418EB525",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: insert tree mod log move in push_node_left\n\nThere is a fairly unlikely race condition in tree mod log rewind that\ncan result in a kernel panic which has the following trace:\n\n  [530.569] BTRFS critical (device sda3): unable to find logical 0 length 4096\n  [530.585] BTRFS critical (device sda3): unable to find logical 0 length 4096\n  [530.602] BUG: kernel NULL pointer dereference, address: 0000000000000002\n  [530.618] #PF: supervisor read access in kernel mode\n  [530.629] #PF: error_code(0x0000) - not-present page\n  [530.641] PGD 0 P4D 0\n  [530.647] Oops: 0000 [#1] SMP\n  [530.654] CPU: 30 PID: 398973 Comm: below Kdump: loaded Tainted: G S         O  K   5.12.0-0_fbk13_clang_7455_gb24de3bdb045 #1\n  [530.680] Hardware name: Quanta Mono Lake-M.2 SATA 1HY9U9Z001G/Mono Lake-M.2 SATA, BIOS F20_3A15 08/16/2017\n  [530.703] RIP: 0010:__btrfs_map_block+0xaa/0xd00\n  [530.755] RSP: 0018:ffffc9002c2f7600 EFLAGS: 00010246\n  [530.767] RAX: ffffffffffffffea RBX: ffff888292e41000 RCX: f2702d8b8be15100\n  [530.784] RDX: ffff88885fda6fb8 RSI: ffff88885fd973c8 RDI: ffff88885fd973c8\n  [530.800] RBP: ffff888292e410d0 R08: ffffffff82fd7fd0 R09: 00000000fffeffff\n  [530.816] R10: ffffffff82e57fd0 R11: ffffffff82e57d70 R12: 0000000000000000\n  [530.832] R13: 0000000000001000 R14: 0000000000001000 R15: ffffc9002c2f76f0\n  [530.848] FS:  00007f38d64af000(0000) GS:ffff88885fd80000(0000) knlGS:0000000000000000\n  [530.866] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  [530.880] CR2: 0000000000000002 CR3: 00000002b6770004 CR4: 00000000003706e0\n  [530.896] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n  [530.912] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n  [530.928] Call Trace:\n  [530.934]  ? btrfs_printk+0x13b/0x18c\n  [530.943]  ? btrfs_bio_counter_inc_blocked+0x3d/0x130\n  [530.955]  btrfs_map_bio+0x75/0x330\n  [530.963]  ? kmem_cache_alloc+0x12a/0x2d0\n  [530.973]  ? btrfs_submit_metadata_bio+0x63/0x100\n  [530.984]  btrfs_submit_metadata_bio+0xa4/0x100\n  [530.995]  submit_extent_page+0x30f/0x360\n  [531.004]  read_extent_buffer_pages+0x49e/0x6d0\n  [531.015]  ? submit_extent_page+0x360/0x360\n  [531.025]  btree_read_extent_buffer_pages+0x5f/0x150\n  [531.037]  read_tree_block+0x37/0x60\n  [531.046]  read_block_for_search+0x18b/0x410\n  [531.056]  btrfs_search_old_slot+0x198/0x2f0\n  [531.066]  resolve_indirect_ref+0xfe/0x6f0\n  [531.076]  ? ulist_alloc+0x31/0x60\n  [531.084]  ? kmem_cache_alloc_trace+0x12e/0x2b0\n  [531.095]  find_parent_nodes+0x720/0x1830\n  [531.105]  ? ulist_alloc+0x10/0x60\n  [531.113]  iterate_extent_inodes+0xea/0x370\n  [531.123]  ? btrfs_previous_extent_item+0x8f/0x110\n  [531.134]  ? btrfs_search_path_in_tree+0x240/0x240\n  [531.146]  iterate_inodes_from_logical+0x98/0xd0\n  [531.157]  ? btrfs_search_path_in_tree+0x240/0x240\n  [531.168]  btrfs_ioctl_logical_to_ino+0xd9/0x180\n  [531.179]  btrfs_ioctl+0xe2/0x2eb0\n\nThis occurs when logical inode resolution takes a tree mod log sequence\nnumber, and then while backref walking hits a rewind on a busy node\nwhich has the following sequence of tree mod log operations (numbers\nfilled in from a specific example, but they are somewhat arbitrary)\n\n  REMOVE_WHILE_FREEING slot 532\n  REMOVE_WHILE_FREEING slot 531\n  REMOVE_WHILE_FREEING slot 530\n  ...\n  REMOVE_WHILE_FREEING slot 0\n  REMOVE slot 455\n  REMOVE slot 454\n  REMOVE slot 453\n  ...\n  REMOVE slot 0\n  ADD slot 455\n  ADD slot 454\n  ADD slot 453\n  ...\n  ADD slot 0\n  MOVE src slot 0 -\u003e dst slot 456 nritems 533\n  REMOVE slot 455\n  REMOVE slot 454\n  REMOVE slot 453\n  ...\n  REMOVE slot 0\n\nWhen this sequence gets applied via btrfs_tree_mod_log_rewind, it\nallocates a fresh rewind eb, and first inserts the correct key info for\nthe 533 elements, then overwrites the first 456 of them, then decrements\nthe count by 456 via the add ops, then rewinds the move by doing a\nmemmove from 456:988-\u003e0:532. We have never written anything past 532,\n---truncated---"
          }
        ],
        "id": "CVE-2023-53538",
        "lastModified": "2026-10-03T11:17:28.147",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2025-10-04T16:15:48.813",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/11f14402fe3437852cb44945b3b9f1bdb4032956"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/5cead5422a0e3d13b0bcee986c0f5c4ebb94100b"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/7e0ee4cb02e6b485103ecd125743b2818a68993d"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-476"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-11-07T10:51:02+00:00",
      "cve": "CVE-2023-53538",
      "id": "CVE-2023-53538",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_affected": "42",
      "product_status:known_not_affected": "158",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: btrfs: insert tree mod log move in push_node_left",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53538.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.