CVE-2026-53320

{"id": "CVE-2026-53320", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "7942b919f7321f95a777d396ff7894a7a83dc9b0", "lessThan": "e0a0c4903cbba351f0f5b5d104960d3a5b23202f", "versionType": "git"}, {"status": "affected", "version": "7942b919f7321f95a777d396ff7894a7a83dc9b0", "lessThan": "9472d37799a0b9ff9b99639f35961ac2f0b3c9be", "versionType": "git"}, {"status": "affected", "version": "7942b919f7321f95a777d396ff7894a7a83dc9b0", "lessThan": "65e07964b4b2daf9a54e686cf0fa72d74a9648a8", "versionType": "git"}, {"status": "affected", "version": "7942b919f7321f95a777d396ff7894a7a83dc9b0", "lessThan": "b88f905d4449b70da6bda547be546e365e44352e", "versionType": "git"}, {"status": "affected", "version": "7942b919f7321f95a777d396ff7894a7a83dc9b0", "lessThan": "4525658002be3ad310b16bf8db48c8adb6a55d32", "versionType": "git"}, {"status": "affected", "version": "7942b919f7321f95a777d396ff7894a7a83dc9b0", "lessThan": "e5ff0ba4b6983cdbcc826efc201e7179ece5d46f", "versionType": "git"}, {"status": "affected", "version": "7942b919f7321f95a777d396ff7894a7a83dc9b0", "lessThan": "94094e70fe292c9566502772d4d4d6d6a99204b1", "versionType": "git"}, {"status": "affected", "version": "7942b919f7321f95a777d396ff7894a7a83dc9b0", "lessThan": "be3e5d10643d3be1cbac9d9939f220a99253f980", "versionType": "git"}], "programFiles": ["fs/nilfs2/ioctl.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.30"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.30", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.258", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.209", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.175", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.141", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.91", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.33", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.10", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/nilfs2/ioctl.c"], "defaultStatus": "affected"}]}], "published": "2026-06-26T20:17:25.330", "references": [{"url": "https://git.kernel.org/stable/c/4525658002be3ad310b16bf8db48c8adb6a55d32", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/65e07964b4b2daf9a54e686cf0fa72d74a9648a8", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/94094e70fe292c9566502772d4d4d6d6a99204b1", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9472d37799a0b9ff9b99639f35961ac2f0b3c9be", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b88f905d4449b70da6bda547be546e365e44352e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/be3e5d10643d3be1cbac9d9939f220a99253f980", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e0a0c4903cbba351f0f5b5d104960d3a5b23202f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e5ff0ba4b6983cdbcc826efc201e7179ece5d46f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: reject zero bd_oblocknr in nilfs_ioctl_mark_blocks_dirty()\n\nnilfs_ioctl_mark_blocks_dirty() uses bd_oblocknr to detect dead blocks\nby comparing it with the current block number bd_blocknr. If they differ,\nthe block is considered dead and skipped.\n\nHowever, bd_oblocknr should never be 0 since block 0 typically stores the\nprimary superblock and is never a valid GC target block. A corrupted ioctl\nrequest with bd_oblocknr set to 0 causes the comparison to incorrectly\nmatch when the lookup returns -ENOENT and sets bd_blocknr to 0, bypassing\nthe dead block check and calling nilfs_bmap_mark() on a non-existent\nblock. This causes nilfs_btree_do_lookup() to return -ENOENT, triggering\nthe WARN_ON(ret == -ENOENT).\n\nFix this by rejecting ioctl requests with bd_oblocknr set to 0 at the\nbeginning of each iteration.\n\n[ryusuke: slightly modified the commit message and comments for accuracy]"}], "lastModified": "2026-07-06T20:12:14.333", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0667B78C-D301-44C7-8283-B3C136C52986", "versionEndExcluding": "5.10.258", "versionStartIncluding": "2.6.30"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "919C10A9-7951-4A74-BADD-C135A0A8D8B4", "versionEndExcluding": "5.15.209", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "92385813-D91D-480D-83A1-F423D2CBB2BA", "versionEndExcluding": "6.1.175", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "97A9FFFA-22BB-4D5C-9790-5A2286E392F7", "versionEndExcluding": "6.6.141", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C918746B-DE6F-448F-A93E-A04C5481688D", "versionEndExcluding": "6.12.91", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "96D99E49-380D-43AB-BDBA-25C3AD018A9C", "versionEndExcluding": "6.18.33", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A13475D2-59BF-4716-94B5-7C1D239A2CF4", "versionEndExcluding": "7.0.10", "versionStartIncluding": "6.19"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}