{"api_version":"1","generated_at":"2026-06-04T00:44:11+00:00","cve":"CVE-2026-23265","urls":{"html":"https://cve.report/CVE-2026-23265","api":"https://cve.report/api/cve/CVE-2026-23265.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-23265","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-23265"},"summary":{"title":"f2fs: fix to do sanity check on node footer in {read,write}_end_io","description":"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 <IRQ>\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 </IRQ>\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't do sanity check on node footer, once node page becomes\ndirty, we will encounter this bug after node page writeback.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-03-18 18:16:25","updated_at":"2026-05-29 18:43:55"},"problem_types":["NVD-CWE-noinfo"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"5.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"references":[{"url":"https://git.kernel.org/stable/c/855c54f1803e3ebc613677b4f389c7f92656a1fc","name":"https://git.kernel.org/stable/c/855c54f1803e3ebc613677b4f389c7f92656a1fc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/50ac3ecd8e05b6bcc350c71a4307d40c030ec7e4","name":"https://git.kernel.org/stable/c/50ac3ecd8e05b6bcc350c71a4307d40c030ec7e4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c386753db52b3a80afa6612bfdcb925aa5ca260f","name":"https://git.kernel.org/stable/c/c386753db52b3a80afa6612bfdcb925aa5ca260f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-23265","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23265","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e05df3b115e7308afbca652769b54e4549fcc723 855c54f1803e3ebc613677b4f389c7f92656a1fc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e05df3b115e7308afbca652769b54e4549fcc723 c386753db52b3a80afa6612bfdcb925aa5ca260f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e05df3b115e7308afbca652769b54e4549fcc723 50ac3ecd8e05b6bcc350c71a4307d40c030ec7e4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.8","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.8 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.13 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.3 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2026","cve_id":"23265","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"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":[{"lessThan":"855c54f1803e3ebc613677b4f389c7f92656a1fc","status":"affected","version":"e05df3b115e7308afbca652769b54e4549fcc723","versionType":"git"},{"lessThan":"c386753db52b3a80afa6612bfdcb925aa5ca260f","status":"affected","version":"e05df3b115e7308afbca652769b54e4549fcc723","versionType":"git"},{"lessThan":"50ac3ecd8e05b6bcc350c71a4307d40c030ec7e4","status":"affected","version":"e05df3b115e7308afbca652769b54e4549fcc723","versionType":"git"}]},{"defaultStatus":"affected","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":[{"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"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"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 <IRQ>\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 </IRQ>\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't 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"},"nvd":{"publishedDate":"2026-03-18 18:16:25","lastModifiedDate":"2026-05-29 18:43:55","problem_types":["NVD-CWE-noinfo"],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"6.18.13","matchCriteriaId":"8F3C30C1-5691-4A68-9D9F-1190984B5F2F"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"6.19.3","matchCriteriaId":"7853A337-FB2A-4E19-AB47-4E38343532AA"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"23265","Ordinal":"1","Title":"f2fs: fix to do sanity check on node footer in {read,write}_end_","CVE":"CVE-2026-23265","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"23265","Ordinal":"1","NoteData":"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 <IRQ>\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 </IRQ>\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't do sanity check on node footer, once node page becomes\ndirty, we will encounter this bug after node page writeback.","Type":"Description","Title":"f2fs: fix to do sanity check on node footer in {read,write}_end_"}]}}}