{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-53420", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-17T14:54:09.741Z", "datePublished": "2025-09-18T16:04:03.754Z", "dateUpdated": "2026-08-05T09:14:02.648Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:14:02.648Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: Fix panic about slab-out-of-bounds caused by ntfs_listxattr()\n\nHere is a BUG report from syzbot:\n\nBUG: KASAN: slab-out-of-bounds in ntfs_list_ea fs/ntfs3/xattr.c:191 [inline]\nBUG: KASAN: slab-out-of-bounds in ntfs_listxattr+0x401/0x570 fs/ntfs3/xattr.c:710\nRead of size 1 at addr ffff888021acaf3d by task syz-executor128/3632\n\nCall Trace:\n ntfs_list_ea fs/ntfs3/xattr.c:191 [inline]\n ntfs_listxattr+0x401/0x570 fs/ntfs3/xattr.c:710\n vfs_listxattr fs/xattr.c:457 [inline]\n listxattr+0x293/0x2d0 fs/xattr.c:804\n\nFix the logic of ea_all iteration. When the ea->name_len is 0,\nreturn immediately, or Add2Ptr() would visit invalid memory\nin the next loop.\n\n[almaz.alexandrovich@paragon-software.com: lines of the patch have changed]" } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "baseScore": 7.1, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The bug is in ntfs3 on-disk EA parsing reached via the listxattr syscall (ntfs_listxattr → ntfs_list_ea) on a mounted NTFS volume; malicious ATTR_EA data comes from the filesystem image, not from network protocol input.\nAC:L - A crafted NTFS image with a zero name_len EA reliably triggers the out-of-bounds read on listxattr with no race or other conditions outside the attacker’s control.\nPR:L - vfs_listxattr does not require MAY_READ—only path traversal and LSM listxattr hooks—so an unprivileged local user who can reach a file on a mounted NTFS volume can invoke the vulnerable path.\nUI:N - Once an NTFS volume is mounted (common for removable/dual-boot/shared storage), the attacker triggers the bug solely by calling listxattr; no further victim interaction is required.\nS:U - Impact is confined to the local kernel’s memory/availability authority; this is standard kernel memory-safety impact with no VM, IOMMU, or other security-authority boundary crossed.\nC:H - The slab OOB read in ntfs_list_ea can read past the kmalloc’d EA buffer and, on continued iteration, memcpy attacker-influenced lengths of adjacent slab memory into the listxattr buffer that is copied to userspace.\nI:N - The defect is an out-of-bounds read only; memcpy destinations are the legitimate list buffer under a size check, with no OOB write or other kernel integrity corruption primitive.\nA:H - The OOB access causes KASAN reports and can oops/panic the kernel when invalid EA iteration touches unmapped or poisoned slab memory, enabling denial of service." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/ntfs3/xattr.c" ], "versions": [ { "version": "be71b5cba2e6485e8959da7a9f9a44461a1bb074", "lessThan": "f3380d895e28a32632eb3609f5bd515adee4e5a1", "status": "affected", "versionType": "git" }, { "version": "be71b5cba2e6485e8959da7a9f9a44461a1bb074", "lessThan": "c86a2517df6c9304db8fb12b77136ec7a5d85994", "status": "affected", "versionType": "git" }, { "version": "be71b5cba2e6485e8959da7a9f9a44461a1bb074", "lessThan": "721b75ea2dfce53a8890dff92ae01afca8e74f88", "status": "affected", "versionType": "git" }, { "version": "be71b5cba2e6485e8959da7a9f9a44461a1bb074", "lessThan": "3c675ddffb17a8b1e32efad5c983254af18b12c2", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/ntfs3/xattr.c" ], "versions": [ { "version": "5.15", "status": "affected" }, { "version": "0", "lessThan": "5.15", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.121", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.39", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.4.4", "lessThanOrEqual": "6.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.5", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "5.15.121" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.1.39" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.4.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.5" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/f3380d895e28a32632eb3609f5bd515adee4e5a1" }, { "url": "https://git.kernel.org/stable/c/c86a2517df6c9304db8fb12b77136ec7a5d85994" }, { "url": "https://git.kernel.org/stable/c/721b75ea2dfce53a8890dff92ae01afca8e74f88" }, { "url": "https://git.kernel.org/stable/c/3c675ddffb17a8b1e32efad5c983254af18b12c2" } ], "title": "ntfs: Fix panic about slab-out-of-bounds caused by ntfs_listxattr()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2023-53420", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2026-01-14T19:11:54.225188Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-125", "description": "CWE-125 Out-of-bounds Read" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T19:13:10.492Z" } } ] } }