{ "dataType": "CVE_RECORD", "cveMetadata": { "cveId": "CVE-2023-52600", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-03-02T21:55:42.573Z", "datePublished": "2024-03-06T06:45:28.198Z", "dateUpdated": "2026-08-05T09:10:34.627Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:10:34.627Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\njfs: fix uaf in jfs_evict_inode\n\nWhen the execution of diMount(ipimap) fails, the object ipimap that has been\nreleased may be accessed in diFreeSpecial(). Asynchronous ipimap release occurs\nwhen rcu_core() calls jfs_free_node().\n\nTherefore, when diMount(ipimap) fails, sbi->ipimap should not be initialized as\nipimap." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The bug is reached only by mounting a crafted JFS block image (mount → jfs_fill_super → jfs_mount → diMount failure unwind → jfs_evict_inode); fs/jfs has no network or adjacent-protocol entry point.\nAC:L - A crafted image that makes diMount(ipimap) fail (e.g. EIO on the imap control page, as in the syzbot repro with rc=-5) deterministically takes the err_ipimap path that leaves the dangling sbi->ipimap; the resulting inode-slab UAF is attacker-triggerable under ordinary mount stress with no uncontrollable victim state.\nPR:L - JFS lacks FS_USERNS_MOUNT so mount(2) needs CAP_SYS_ADMIN, but on desktops/kiosks/shared workstations an unprivileged seat user can attach the malicious image via udisks2/polkit/automount, matching sibling JFS crafted-image scores.\nUI:N - In the automount/udisks scenario the attacker supplies the media and causes it to be mounted in their own session, so no separate victim action is required at exploitation time.\nS:U - The use-after-free corrupts host kernel inode/imap memory only and does not cross a VM, IOMMU, or other separate security authority.\nC:H - The UAF is a slab-use-after-free of the fileset imap inode; reclaiming that object lets an attacker control JFS_IP(ipimap)->i_imap and subsequent diFree() reads, enabling arbitrary kernel memory disclosure.\nI:H - The same reclaimable inode UAF feeds attacker-controlled imap state into diFree() and related metadata updates, yielding a heap write/control-flow hijack primitive consistent with UAF scoring guidance.\nA:H - Syzbot demonstrates a KASAN slab-use-after-free read in jfs_evict_inode during mount unwind, which produces a kernel oops/panic and hard availability loss." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/jfs/jfs_mount.c" ], "versions": [ { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "81b4249ef37297fb17ba102a524039a05c6c5d35", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "93df0a2a0b3cde2d7ab3a52ed46ea1d6d4aaba5f", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "bc6ef64dbe71136f327d63b2b9071b828af2c2a8", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "8e44dc3f96e903815dab1d74fff8faafdc6feb61", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "32e8f2d95528d45828c613417cb2827d866cbdce", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "1696d6d7d4a1b373e96428d0fe1166bd7c3c795e", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "bacdaa04251382d7efd4f09f9a0686bfcc297e2e", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "e0e1958f4c365e380b17ccb35617345b31ef7bf3", "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/jfs/jfs_mount.c" ], "versions": [ { "version": "2.6.12", "status": "affected" }, { "version": "0", "lessThan": "2.6.12", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.307", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.269", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.210", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.149", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.77", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.16", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.7.4", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8", "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": "2.6.12", "versionEndExcluding": "4.19.307" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.4.269" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.10.210" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.15.149" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.1.77" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.6.16" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.7.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.8" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/81b4249ef37297fb17ba102a524039a05c6c5d35" }, { "url": "https://git.kernel.org/stable/c/93df0a2a0b3cde2d7ab3a52ed46ea1d6d4aaba5f" }, { "url": "https://git.kernel.org/stable/c/bc6ef64dbe71136f327d63b2b9071b828af2c2a8" }, { "url": "https://git.kernel.org/stable/c/8e44dc3f96e903815dab1d74fff8faafdc6feb61" }, { "url": "https://git.kernel.org/stable/c/32e8f2d95528d45828c613417cb2827d866cbdce" }, { "url": "https://git.kernel.org/stable/c/1696d6d7d4a1b373e96428d0fe1166bd7c3c795e" }, { "url": "https://git.kernel.org/stable/c/bacdaa04251382d7efd4f09f9a0686bfcc297e2e" }, { "url": "https://git.kernel.org/stable/c/e0e1958f4c365e380b17ccb35617345b31ef7bf3" } ], "title": "jfs: fix uaf in jfs_evict_inode", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CISA ADP Vulnrichment", "metrics": [ { "other": { "type": "ssvc", "content": { "id": 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