CVE-2023-54151 (GCVE-0-2023-54151)

Vulnerability from cvelistv5 – Published: 2025-12-24 13:07 – Updated: 2026-08-05 09:17
VLAI
Title
f2fs: Fix system crash due to lack of free space in LFS
Summary
In the Linux kernel, the following vulnerability has been resolved: f2fs: Fix system crash due to lack of free space in LFS When f2fs tries to checkpoint during foreground gc in LFS mode, system crash occurs due to lack of free space if the amount of dirty node and dentry pages generated by data migration exceeds free space. The reproduction sequence is as follows. - 20GiB capacity block device (null_blk) - format and mount with LFS mode - create a file and write 20,000MiB - 4k random write on full range of the file RIP: 0010:new_curseg+0x48a/0x510 [f2fs] Code: 55 e7 f5 89 c0 48 0f af c3 48 8b 5d c0 48 c1 e8 20 83 c0 01 89 43 6c 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc <0f> 0b f0 41 80 4f 48 04 45 85 f6 0f 84 ba fd ff ff e9 ef fe ff ff RSP: 0018:ffff977bc397b218 EFLAGS: 00010246 RAX: 00000000000027b9 RBX: 0000000000000000 RCX: 00000000000027c0 RDX: 0000000000000000 RSI: 00000000000027b9 RDI: ffff8c25ab4e74f8 RBP: ffff977bc397b268 R08: 00000000000027b9 R09: ffff8c29e4a34b40 R10: 0000000000000001 R11: ffff977bc397b0d8 R12: 0000000000000000 R13: ffff8c25b4dd81a0 R14: 0000000000000000 R15: ffff8c2f667f9000 FS: 0000000000000000(0000) GS:ffff8c344ec80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00055d000 CR3: 0000000e30810003 CR4: 00000000003706e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> allocate_segment_by_default+0x9c/0x110 [f2fs] f2fs_allocate_data_block+0x243/0xa30 [f2fs] ? __mod_lruvec_page_state+0xa0/0x150 do_write_page+0x80/0x160 [f2fs] f2fs_do_write_node_page+0x32/0x50 [f2fs] __write_node_page+0x339/0x730 [f2fs] f2fs_sync_node_pages+0x5a6/0x780 [f2fs] block_operations+0x257/0x340 [f2fs] f2fs_write_checkpoint+0x102/0x1050 [f2fs] f2fs_gc+0x27c/0x630 [f2fs] ? folio_mark_dirty+0x36/0x70 f2fs_balance_fs+0x16f/0x180 [f2fs] This patch adds checking whether free sections are enough before checkpoint during gc. [Jaegeuk Kim: code clean-up]
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: a9163b947ae8f7af7cb8d63606cd87b9facbfe74 , < f4631d295ae3fff9e240ab78dc17f4b83d14f7bc (git)
Affected: a9163b947ae8f7af7cb8d63606cd87b9facbfe74 , < ce71c61d661cfac3f097af928995abfcebd2b8c5 (git)
Affected: a9163b947ae8f7af7cb8d63606cd87b9facbfe74 , < d11cef14f8146f3babd286c2cc8ca09c166295e2 (git)
Affected: ec769406d06d5006c40554c4640f6e584ab6ae26 (git)
Affected: 8102416c05bb08795b9278a8664f9be827fadbe2 (git)
Affected: 938166b2b3051d9965c36f9b5228966d4f198b2a (git)
Affected: 5.10.137 , < 5.11 (semver)
Affected: 5.15.150 , < 5.16 (semver)
Affected: 5.18.18 , < 5.19 (semver)
Create a notification for this product.
Linux Linux Affected: 5.19
Unaffected: 0 , < 5.19 (semver)
Unaffected: 6.1.30 , ≤ 6.1.* (semver)
Unaffected: 6.3.4 , ≤ 6.3.* (semver)
Unaffected: 6.4 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/f2fs/gc.c",
            "fs/f2fs/gc.h",
            "fs/f2fs/segment.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "938166b2b3051d9965c36f9b5228966d4f198b2a",
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        {
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          "product": "Linux",
          "programFiles": [
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            "fs/f2fs/gc.h",
            "fs/f2fs/segment.h"
          ],
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              "versionType": "semver"
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              "lessThanOrEqual": "6.3.*",
              "status": "unaffected",
              "version": "6.3.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.4",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.30",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.3.4",
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: Fix system crash due to lack of free space in LFS\n\nWhen f2fs tries to checkpoint during foreground gc in LFS mode, system\ncrash occurs due to lack of free space if the amount of dirty node and\ndentry pages generated by data migration exceeds free space.\nThe reproduction sequence is as follows.\n\n - 20GiB capacity block device (null_blk)\n - format and mount with LFS mode\n - create a file and write 20,000MiB\n - 4k random write on full range of the file\n\n RIP: 0010:new_curseg+0x48a/0x510 [f2fs]\n Code: 55 e7 f5 89 c0 48 0f af c3 48 8b 5d c0 48 c1 e8 20 83 c0 01 89 43 6c 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc \u003c0f\u003e 0b f0 41 80 4f 48 04 45 85 f6 0f 84 ba fd ff ff e9 ef fe ff ff\n RSP: 0018:ffff977bc397b218 EFLAGS: 00010246\n RAX: 00000000000027b9 RBX: 0000000000000000 RCX: 00000000000027c0\n RDX: 0000000000000000 RSI: 00000000000027b9 RDI: ffff8c25ab4e74f8\n RBP: ffff977bc397b268 R08: 00000000000027b9 R09: ffff8c29e4a34b40\n R10: 0000000000000001 R11: ffff977bc397b0d8 R12: 0000000000000000\n R13: ffff8c25b4dd81a0 R14: 0000000000000000 R15: ffff8c2f667f9000\n FS: 0000000000000000(0000) GS:ffff8c344ec80000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 000000c00055d000 CR3: 0000000e30810003 CR4: 00000000003706e0\n DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n Call Trace:\n \u003cTASK\u003e\n allocate_segment_by_default+0x9c/0x110 [f2fs]\n f2fs_allocate_data_block+0x243/0xa30 [f2fs]\n ? __mod_lruvec_page_state+0xa0/0x150\n do_write_page+0x80/0x160 [f2fs]\n f2fs_do_write_node_page+0x32/0x50 [f2fs]\n __write_node_page+0x339/0x730 [f2fs]\n f2fs_sync_node_pages+0x5a6/0x780 [f2fs]\n block_operations+0x257/0x340 [f2fs]\n f2fs_write_checkpoint+0x102/0x1050 [f2fs]\n f2fs_gc+0x27c/0x630 [f2fs]\n ? folio_mark_dirty+0x36/0x70\n f2fs_balance_fs+0x16f/0x180 [f2fs]\n\nThis patch adds checking whether free sections are enough before checkpoint\nduring gc.\n\n[Jaegeuk Kim: code clean-up]"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The trigger is ordinary file I/O (write/fallocate/create) on a mounted f2fs volume via `f2fs_balance_fs()`, requiring local access to the system. No network protocol handler is involved.\nAC:L - The attacker fully controls the trigger \u2014 fill the filesystem and issue 4K random overwrites, as in the reproducer \u2014 and LFS mode is mandatory on zoned devices, so no condition outside the attacker\u0027s control must coincide.\nPR:L - Only an unprivileged account with write access to the f2fs mount is needed; no capability, ioctl or admin check exists anywhere between the write syscall and `get_new_segment()`.\nUI:N - The attacker\u0027s own writes drive the filesystem to exhaustion and trigger foreground GC; no victim action is required on an already-mounted volume.\nS:U - The corruption and the crash are confined to kernel memory within the same security authority; no VM, IOMMU or sandbox boundary is crossed.\nC:H - In the default configuration `f2fs_bug_on()` is only a `WARN_ON`, so execution continues and `get_seg_entry(sbi, MAIN_SEGS)` reads a `struct seg_entry` past the end of the `sentries` array, dereferencing `cur_valid_map`/`ckpt_valid_map` pointers taken from adjacent heap memory \u2014 an out-of-bounds read that can be leveraged to disclose kernel memory.\nI:H - The same path performs out-of-bounds writes \u2014 `se-\u003evalid_blocks = new_vblocks` past the array end, OOB `set_bit` on `free_segmap`/`free_secmap`, and `f2fs_test_and_set_bit()` through a pointer read from out-of-bounds memory \u2014 giving a wild-pointer write primitive, plus on-disk metadata corruption from allocating out-of-range segments.\nA:H - With `CONFIG_F2FS_CHECK_FS=y` the `BUG_ON` fires while `free_i-\u003esegmap_lock` is held, permanently wedging all further allocations on that filesystem; otherwise the out-of-bounds accesses reliably oops the kernel (and `panic_on_warn` turns the WARN into an immediate panic)."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T09:17:39.424Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f4631d295ae3fff9e240ab78dc17f4b83d14f7bc"
        },
        {
          "url": "https://git.kernel.org/stable/c/ce71c61d661cfac3f097af928995abfcebd2b8c5"
        },
        {
          "url": "https://git.kernel.org/stable/c/d11cef14f8146f3babd286c2cc8ca09c166295e2"
        }
      ],
      "title": "f2fs: Fix system crash due to lack of free space in LFS",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-54151",
    "datePublished": "2025-12-24T13:07:02.600Z",
    "dateReserved": "2025-12-24T13:02:52.528Z",
    "dateUpdated": "2026-08-05T09:17:39.424Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-54151",
      "date": "2026-08-10",
      "epss": "0.00132",
      "percentile": "0.0317"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-54151\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-24T13:16:17.113\",\"lastModified\":\"2026-08-04T11:16:34.190\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nf2fs: Fix system crash due to lack of free space in LFS\\n\\nWhen f2fs tries to checkpoint during foreground gc in LFS mode, system\\ncrash occurs due to lack of free space if the amount of dirty node and\\ndentry pages generated by data migration exceeds free space.\\nThe reproduction sequence is as follows.\\n\\n - 20GiB capacity block device (null_blk)\\n - format and mount with LFS mode\\n - create a file and write 20,000MiB\\n - 4k random write on full range of the file\\n\\n RIP: 0010:new_curseg+0x48a/0x510 [f2fs]\\n Code: 55 e7 f5 89 c0 48 0f af c3 48 8b 5d c0 48 c1 e8 20 83 c0 01 89 43 6c 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc \u003c0f\u003e 0b f0 41 80 4f 48 04 45 85 f6 0f 84 ba fd ff ff e9 ef fe ff ff\\n RSP: 0018:ffff977bc397b218 EFLAGS: 00010246\\n RAX: 00000000000027b9 RBX: 0000000000000000 RCX: 00000000000027c0\\n RDX: 0000000000000000 RSI: 00000000000027b9 RDI: ffff8c25ab4e74f8\\n RBP: ffff977bc397b268 R08: 00000000000027b9 R09: ffff8c29e4a34b40\\n R10: 0000000000000001 R11: ffff977bc397b0d8 R12: 0000000000000000\\n R13: ffff8c25b4dd81a0 R14: 0000000000000000 R15: ffff8c2f667f9000\\n FS: 0000000000000000(0000) GS:ffff8c344ec80000(0000) knlGS:0000000000000000\\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n CR2: 000000c00055d000 CR3: 0000000e30810003 CR4: 00000000003706e0\\n DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\n DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\n Call Trace:\\n \u003cTASK\u003e\\n allocate_segment_by_default+0x9c/0x110 [f2fs]\\n f2fs_allocate_data_block+0x243/0xa30 [f2fs]\\n ? __mod_lruvec_page_state+0xa0/0x150\\n do_write_page+0x80/0x160 [f2fs]\\n f2fs_do_write_node_page+0x32/0x50 [f2fs]\\n __write_node_page+0x339/0x730 [f2fs]\\n f2fs_sync_node_pages+0x5a6/0x780 [f2fs]\\n block_operations+0x257/0x340 [f2fs]\\n f2fs_write_checkpoint+0x102/0x1050 [f2fs]\\n f2fs_gc+0x27c/0x630 [f2fs]\\n ? folio_mark_dirty+0x36/0x70\\n f2fs_balance_fs+0x16f/0x180 [f2fs]\\n\\nThis patch adds checking whether free sections are enough before checkpoint\\nduring gc.\\n\\n[Jaegeuk Kim: code clean-up]\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/f2fs/gc.c\",\"fs/f2fs/gc.h\",\"fs/f2fs/segment.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"a9163b947ae8f7af7cb8d63606cd87b9facbfe74\",\"lessThan\":\"f4631d295ae3fff9e240ab78dc17f4b83d14f7bc\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a9163b947ae8f7af7cb8d63606cd87b9facbfe74\",\"lessThan\":\"ce71c61d661cfac3f097af928995abfcebd2b8c5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a9163b947ae8f7af7cb8d63606cd87b9facbfe74\",\"lessThan\":\"d11cef14f8146f3babd286c2cc8ca09c166295e2\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ec769406d06d5006c40554c4640f6e584ab6ae26\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8102416c05bb08795b9278a8664f9be827fadbe2\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"938166b2b3051d9965c36f9b5228966d4f198b2a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5.10.137\",\"lessThan\":\"5.11\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.15.150\",\"lessThan\":\"5.16\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.18.18\",\"lessThan\":\"5.19\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/f2fs/gc.c\",\"fs/f2fs/gc.h\",\"fs/f2fs/segment.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.19\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.19\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.30\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.3.4\",\"lessThanOrEqual\":\"6.3.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.4\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/ce71c61d661cfac3f097af928995abfcebd2b8c5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d11cef14f8146f3babd286c2cc8ca09c166295e2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f4631d295ae3fff9e240ab78dc17f4b83d14f7bc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:19:30+00:00",
      "cve": "CVE-2023-54151",
      "id": "CVE-2023-54151",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: f2fs: Fix system crash due to lack of free space in LFS",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-54151.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-26T00:05:58Z",
      "cve": "CVE-2023-54151",
      "id": "CVE-2023-54151",
      "initial_release_date": "2025-12-25T00:54:27Z",
      "product_status:known_not_affected": "453",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-54151",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-54151.json",
      "version": "11"
    }
  }
}



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  • 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.


Detection rules are retrieved from Rulezet.