{"api_version":"1","generated_at":"2026-08-15T08:45:47+00:00","cve":"CVE-2026-74426","urls":{"html":"https://cve.report/CVE-2026-74426","api":"https://cve.report/api/cve/CVE-2026-74426.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74426","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74426"},"summary":{"title":"afs: fix NULL pointer dereference in afs_get_tree()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nafs: fix NULL pointer dereference in afs_get_tree()\n\nafs_alloc_sbi() uses kzalloc for memory allocation. And, if\nctx->dyn_root is not null, as->cell and as->volume are null.\nIn trace_afs_get_tree() they are dereferenced.\n\nKASAN error message:\n\nKASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\nCPU: 2 PID: 18478 Comm: syz-executor.7 Not tainted 5.10.246-syzkaller #0\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1\n04/01/2014\nRIP: 0010:perf_trace_afs_get_tree+0x1d9/0x550\ninclude/trace/events/afs.h:1365\n\nCall Trace:\ntrace_afs_get_tree include/trace/events/afs.h:1365 [inline]\nafs_get_tree+0x922/0x1350 fs/afs/super.c:599\nvfs_get_tree+0x8e/0x300 fs/super.c:1572\ndo_new_mount fs/namespace.c:3011 [inline]\npath_mount+0x14a5/0x2220 fs/namespace.c:3341\ndo_mount fs/namespace.c:3354 [inline]\n__do_sys_mount fs/namespace.c:3562 [inline]\n__se_sys_mount fs/namespace.c:3539 [inline]\n__x64_sys_mount+0x283/0x300 fs/namespace.c:3539\n do_syscall_64+0x33/0x50 arch/x86/entry/common.c:46\nentry_SYSCALL_64_after_hwframe+0x67/0xd1\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 06:22:44","updated_at":"2026-08-15 06:22:44"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/d648cc2069eb081707c061849046d909f57c78b1","name":"https://git.kernel.org/stable/c/d648cc2069eb081707c061849046d909f57c78b1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/67fb48c4a0874953212321cd5d57fdb4900dbc31","name":"https://git.kernel.org/stable/c/67fb48c4a0874953212321cd5d57fdb4900dbc31","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/70b2842734d831c908474779bb8a76daf55f782c","name":"https://git.kernel.org/stable/c/70b2842734d831c908474779bb8a76daf55f782c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0b70716081c6462be9b2928ad736d0d527b09678","name":"https://git.kernel.org/stable/c/0b70716081c6462be9b2928ad736d0d527b09678","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d5b17474feed3c30991f07affa2473adbad95055","name":"https://git.kernel.org/stable/c/d5b17474feed3c30991f07affa2473adbad95055","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/867b3ea146a041023bfcd258e6db516b1bb28f19","name":"https://git.kernel.org/stable/c/867b3ea146a041023bfcd258e6db516b1bb28f19","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/23b3d457d8387bcb2a61063a9e520063ada9335f","name":"https://git.kernel.org/stable/c/23b3d457d8387bcb2a61063a9e520063ada9335f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ea19edf71721cd42f923e3c70f4ff995b422fe3b","name":"https://git.kernel.org/stable/c/ea19edf71721cd42f923e3c70f4ff995b422fe3b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74426","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74426","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 80548b03991f58758a336424a90bf9f988e3b077 67fb48c4a0874953212321cd5d57fdb4900dbc31 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 80548b03991f58758a336424a90bf9f988e3b077 d648cc2069eb081707c061849046d909f57c78b1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 80548b03991f58758a336424a90bf9f988e3b077 d5b17474feed3c30991f07affa2473adbad95055 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 80548b03991f58758a336424a90bf9f988e3b077 867b3ea146a041023bfcd258e6db516b1bb28f19 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 80548b03991f58758a336424a90bf9f988e3b077 ea19edf71721cd42f923e3c70f4ff995b422fe3b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 80548b03991f58758a336424a90bf9f988e3b077 23b3d457d8387bcb2a61063a9e520063ada9335f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 80548b03991f58758a336424a90bf9f988e3b077 70b2842734d831c908474779bb8a76daf55f782c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 80548b03991f58758a336424a90bf9f988e3b077 0b70716081c6462be9b2928ad736d0d527b09678 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.2","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.2 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.261 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.212 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.178 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.145 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.97 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.40 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.5 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/afs/super.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"67fb48c4a0874953212321cd5d57fdb4900dbc31","status":"affected","version":"80548b03991f58758a336424a90bf9f988e3b077","versionType":"git"},{"lessThan":"d648cc2069eb081707c061849046d909f57c78b1","status":"affected","version":"80548b03991f58758a336424a90bf9f988e3b077","versionType":"git"},{"lessThan":"d5b17474feed3c30991f07affa2473adbad95055","status":"affected","version":"80548b03991f58758a336424a90bf9f988e3b077","versionType":"git"},{"lessThan":"867b3ea146a041023bfcd258e6db516b1bb28f19","status":"affected","version":"80548b03991f58758a336424a90bf9f988e3b077","versionType":"git"},{"lessThan":"ea19edf71721cd42f923e3c70f4ff995b422fe3b","status":"affected","version":"80548b03991f58758a336424a90bf9f988e3b077","versionType":"git"},{"lessThan":"23b3d457d8387bcb2a61063a9e520063ada9335f","status":"affected","version":"80548b03991f58758a336424a90bf9f988e3b077","versionType":"git"},{"lessThan":"70b2842734d831c908474779bb8a76daf55f782c","status":"affected","version":"80548b03991f58758a336424a90bf9f988e3b077","versionType":"git"},{"lessThan":"0b70716081c6462be9b2928ad736d0d527b09678","status":"affected","version":"80548b03991f58758a336424a90bf9f988e3b077","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/afs/super.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.2"},{"lessThan":"5.2","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.97","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.40","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.261","versionStartIncluding":"5.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.212","versionStartIncluding":"5.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.178","versionStartIncluding":"5.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"5.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.97","versionStartIncluding":"5.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.40","versionStartIncluding":"5.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.5","versionStartIncluding":"5.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc2","versionStartIncluding":"5.2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nafs: fix NULL pointer dereference in afs_get_tree()\n\nafs_alloc_sbi() uses kzalloc for memory allocation. And, if\nctx->dyn_root is not null, as->cell and as->volume are null.\nIn trace_afs_get_tree() they are dereferenced.\n\nKASAN error message:\n\nKASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\nCPU: 2 PID: 18478 Comm: syz-executor.7 Not tainted 5.10.246-syzkaller #0\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1\n04/01/2014\nRIP: 0010:perf_trace_afs_get_tree+0x1d9/0x550\ninclude/trace/events/afs.h:1365\n\nCall Trace:\ntrace_afs_get_tree include/trace/events/afs.h:1365 [inline]\nafs_get_tree+0x922/0x1350 fs/afs/super.c:599\nvfs_get_tree+0x8e/0x300 fs/super.c:1572\ndo_new_mount fs/namespace.c:3011 [inline]\npath_mount+0x14a5/0x2220 fs/namespace.c:3341\ndo_mount fs/namespace.c:3354 [inline]\n__do_sys_mount fs/namespace.c:3562 [inline]\n__se_sys_mount fs/namespace.c:3539 [inline]\n__x64_sys_mount+0x283/0x300 fs/namespace.c:3539\n do_syscall_64+0x33/0x50 arch/x86/entry/common.c:46\nentry_SYSCALL_64_after_hwframe+0x67/0xd1\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."}],"providerMetadata":{"dateUpdated":"2026-08-15T05:59:28.427Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/67fb48c4a0874953212321cd5d57fdb4900dbc31"},{"url":"https://git.kernel.org/stable/c/d648cc2069eb081707c061849046d909f57c78b1"},{"url":"https://git.kernel.org/stable/c/d5b17474feed3c30991f07affa2473adbad95055"},{"url":"https://git.kernel.org/stable/c/867b3ea146a041023bfcd258e6db516b1bb28f19"},{"url":"https://git.kernel.org/stable/c/ea19edf71721cd42f923e3c70f4ff995b422fe3b"},{"url":"https://git.kernel.org/stable/c/23b3d457d8387bcb2a61063a9e520063ada9335f"},{"url":"https://git.kernel.org/stable/c/70b2842734d831c908474779bb8a76daf55f782c"},{"url":"https://git.kernel.org/stable/c/0b70716081c6462be9b2928ad736d0d527b09678"}],"title":"afs: fix NULL pointer dereference in afs_get_tree()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74426","datePublished":"2026-08-15T05:59:28.427Z","dateReserved":"2026-08-15T05:44:03.894Z","dateUpdated":"2026-08-15T05:59:28.427Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 06:22:44","lastModifiedDate":"2026-08-15 06:22:44","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"74426","Ordinal":"1","Title":"afs: fix NULL pointer dereference in afs_get_tree()","CVE":"CVE-2026-74426","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74426","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nafs: fix NULL pointer dereference in afs_get_tree()\n\nafs_alloc_sbi() uses kzalloc for memory allocation. And, if\nctx->dyn_root is not null, as->cell and as->volume are null.\nIn trace_afs_get_tree() they are dereferenced.\n\nKASAN error message:\n\nKASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\nCPU: 2 PID: 18478 Comm: syz-executor.7 Not tainted 5.10.246-syzkaller #0\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1\n04/01/2014\nRIP: 0010:perf_trace_afs_get_tree+0x1d9/0x550\ninclude/trace/events/afs.h:1365\n\nCall Trace:\ntrace_afs_get_tree include/trace/events/afs.h:1365 [inline]\nafs_get_tree+0x922/0x1350 fs/afs/super.c:599\nvfs_get_tree+0x8e/0x300 fs/super.c:1572\ndo_new_mount fs/namespace.c:3011 [inline]\npath_mount+0x14a5/0x2220 fs/namespace.c:3341\ndo_mount fs/namespace.c:3354 [inline]\n__do_sys_mount fs/namespace.c:3562 [inline]\n__se_sys_mount fs/namespace.c:3539 [inline]\n__x64_sys_mount+0x283/0x300 fs/namespace.c:3539\n do_syscall_64+0x33/0x50 arch/x86/entry/common.c:46\nentry_SYSCALL_64_after_hwframe+0x67/0xd1\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller.","Type":"Description","Title":"afs: fix NULL pointer dereference in afs_get_tree()"}]}}}