{"id":"CVE-2026-23265","state":"PUBLISHED","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.","publishedAt":"2026-03-18T17:44:48.031Z","updatedAt":"2026-05-11T22:03:31.038Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"e05df3b115e7308afbca652769b54e4549fcc723","status":"affected","lessThan":"855c54f1803e3ebc613677b4f389c7f92656a1fc","versionType":"git"},{"version":"e05df3b115e7308afbca652769b54e4549fcc723","status":"affected","lessThan":"c386753db52b3a80afa6612bfdcb925aa5ca260f","versionType":"git"},{"version":"e05df3b115e7308afbca652769b54e4549fcc723","status":"affected","lessThan":"50ac3ecd8e05b6bcc350c71a4307d40c030ec7e4","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/f2fs/data.c","fs/f2fs/f2fs.h","fs/f2fs/node.c","fs/f2fs/node.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.8","versionType":"semver"},{"version":"6.18.13","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.3","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/f2fs/data.c","fs/f2fs/f2fs.h","fs/f2fs/node.c","fs/f2fs/node.h"]}],"references":["https://git.kernel.org/stable/c/855c54f1803e3ebc613677b4f389c7f92656a1fc","https://git.kernel.org/stable/c/c386753db52b3a80afa6612bfdcb925aa5ca260f","https://git.kernel.org/stable/c/50ac3ecd8e05b6bcc350c71a4307d40c030ec7e4"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/23xxx/CVE-2026-23265.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23265","state":"PUBLISHED","datePublished":"2026-03-18T17:44:48.031Z","dateUpdated":"2026-05-11T22:03:31.038Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-01-13T15:37:45.991Z"},"containers":{"cna":{"title":"f2fs: fix to do sanity check on node footer in {read,write}_end_io","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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"e05df3b115e7308afbca652769b54e4549fcc723","status":"affected","lessThan":"855c54f1803e3ebc613677b4f389c7f92656a1fc","versionType":"git"},{"version":"e05df3b115e7308afbca652769b54e4549fcc723","status":"affected","lessThan":"c386753db52b3a80afa6612bfdcb925aa5ca260f","versionType":"git"},{"version":"e05df3b115e7308afbca652769b54e4549fcc723","status":"affected","lessThan":"50ac3ecd8e05b6bcc350c71a4307d40c030ec7e4","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/f2fs/data.c","fs/f2fs/f2fs.h","fs/f2fs/node.c","fs/f2fs/node.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.8","versionType":"semver"},{"version":"6.18.13","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.3","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/f2fs/data.c","fs/f2fs/f2fs.h","fs/f2fs/node.c","fs/f2fs/node.h"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T22:03:31.038Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"6.18.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"6.19.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}