CVE-2026-23265 (GCVE-0-2026-23265)

Vulnerability from cvelistv5 – Published: 2026-03-18 17:44 – Updated: 2026-05-11 22:03
VLAI?
Title
f2fs: fix to do sanity check on node footer in {read,write}_end_io
Summary
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on node footer in {read,write}_end_io -----------[ cut here ]------------ kernel BUG at fs/f2fs/data.c:358! Call Trace: <IRQ> blk_update_request+0x5eb/0xe70 block/blk-mq.c:987 blk_mq_end_request+0x3e/0x70 block/blk-mq.c:1149 blk_complete_reqs block/blk-mq.c:1224 [inline] blk_done_softirq+0x107/0x160 block/blk-mq.c:1229 handle_softirqs+0x283/0x870 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050 </IRQ> In f2fs_write_end_io(), it detects there is inconsistency in between node page index (nid) and footer.nid of node page. If footer of node page is corrupted in fuzzed image, then we load corrupted node page w/ async method, e.g. f2fs_ra_node_pages() or f2fs_ra_node_page(), in where we won't do sanity check on node footer, once node page becomes dirty, we will encounter this bug after node page writeback.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: e05df3b115e7308afbca652769b54e4549fcc723 , < 855c54f1803e3ebc613677b4f389c7f92656a1fc (git)
Affected: e05df3b115e7308afbca652769b54e4549fcc723 , < c386753db52b3a80afa6612bfdcb925aa5ca260f (git)
Affected: e05df3b115e7308afbca652769b54e4549fcc723 , < 50ac3ecd8e05b6bcc350c71a4307d40c030ec7e4 (git)
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Linux Linux Affected: 3.8
Unaffected: 0 , < 3.8 (semver)
Unaffected: 6.18.13 , ≤ 6.18.* (semver)
Unaffected: 6.19.3 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/f2fs/data.c",
            "fs/f2fs/f2fs.h",
            "fs/f2fs/node.c",
            "fs/f2fs/node.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
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              "status": "affected",
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              "versionType": "git"
            },
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              "status": "affected",
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        {
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          "programFiles": [
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            "fs/f2fs/f2fs.h",
            "fs/f2fs/node.c",
            "fs/f2fs/node.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.8"
            },
            {
              "lessThan": "3.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.3",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.13",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.3",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to do sanity check on node footer in {read,write}_end_io\n\n-----------[ cut here ]------------\nkernel BUG at fs/f2fs/data.c:358!\nCall Trace:\n \u003cIRQ\u003e\n blk_update_request+0x5eb/0xe70 block/blk-mq.c:987\n blk_mq_end_request+0x3e/0x70 block/blk-mq.c:1149\n blk_complete_reqs block/blk-mq.c:1224 [inline]\n blk_done_softirq+0x107/0x160 block/blk-mq.c:1229\n handle_softirqs+0x283/0x870 kernel/softirq.c:579\n __do_softirq kernel/softirq.c:613 [inline]\n invoke_softirq kernel/softirq.c:453 [inline]\n __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680\n irq_exit_rcu+0x9/0x30 kernel/softirq.c:696\n instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]\n sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050\n \u003c/IRQ\u003e\n\nIn f2fs_write_end_io(), it detects there is inconsistency in between\nnode page index (nid) and footer.nid of node page.\n\nIf footer of node page is corrupted in fuzzed image, then we load corrupted\nnode page w/ async method, e.g. f2fs_ra_node_pages() or f2fs_ra_node_page(),\nin where we won\u0027t do sanity check on node footer, once node page becomes\ndirty, we will encounter this bug after node page writeback."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:03:31.038Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/855c54f1803e3ebc613677b4f389c7f92656a1fc"
        },
        {
          "url": "https://git.kernel.org/stable/c/c386753db52b3a80afa6612bfdcb925aa5ca260f"
        },
        {
          "url": "https://git.kernel.org/stable/c/50ac3ecd8e05b6bcc350c71a4307d40c030ec7e4"
        }
      ],
      "title": "f2fs: fix to do sanity check on node footer in {read,write}_end_io",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23265",
    "datePublished": "2026-03-18T17:44:48.031Z",
    "dateReserved": "2026-01-13T15:37:45.991Z",
    "dateUpdated": "2026-05-11T22:03:31.038Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-23265",
      "date": "2026-05-15",
      "epss": "0.00024",
      "percentile": "0.06862"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-23265\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-03-18T18:16:25.233\",\"lastModified\":\"2026-03-19T13:25:00.570\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nf2fs: fix to do sanity check on node footer in {read,write}_end_io\\n\\n-----------[ cut here ]------------\\nkernel BUG at fs/f2fs/data.c:358!\\nCall Trace:\\n \u003cIRQ\u003e\\n blk_update_request+0x5eb/0xe70 block/blk-mq.c:987\\n blk_mq_end_request+0x3e/0x70 block/blk-mq.c:1149\\n blk_complete_reqs block/blk-mq.c:1224 [inline]\\n blk_done_softirq+0x107/0x160 block/blk-mq.c:1229\\n handle_softirqs+0x283/0x870 kernel/softirq.c:579\\n __do_softirq kernel/softirq.c:613 [inline]\\n invoke_softirq kernel/softirq.c:453 [inline]\\n __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680\\n irq_exit_rcu+0x9/0x30 kernel/softirq.c:696\\n instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]\\n sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050\\n \u003c/IRQ\u003e\\n\\nIn f2fs_write_end_io(), it detects there is inconsistency in between\\nnode page index (nid) and footer.nid of node page.\\n\\nIf footer of node page is corrupted in fuzzed image, then we load corrupted\\nnode page w/ async method, e.g. f2fs_ra_node_pages() or f2fs_ra_node_page(),\\nin where we won\u0027t do sanity check on node footer, once node page becomes\\ndirty, we will encounter this bug after node page writeback.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/50ac3ecd8e05b6bcc350c71a4307d40c030ec7e4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/855c54f1803e3ebc613677b4f389c7f92656a1fc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c386753db52b3a80afa6612bfdcb925aa5ca260f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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