{"id":"CVE-2023-52600","state":"PUBLISHED","title":"jfs: fix uaf in jfs_evict_inode","description":"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.","publishedAt":"2024-03-06T06:45:28.198Z","updatedAt":"2026-08-05T09:10:34.627Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"81b4249ef37297fb17ba102a524039a05c6c5d35","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"93df0a2a0b3cde2d7ab3a52ed46ea1d6d4aaba5f","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"bc6ef64dbe71136f327d63b2b9071b828af2c2a8","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"8e44dc3f96e903815dab1d74fff8faafdc6feb61","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"32e8f2d95528d45828c613417cb2827d866cbdce","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"1696d6d7d4a1b373e96428d0fe1166bd7c3c795e","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"bacdaa04251382d7efd4f09f9a0686bfcc297e2e","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"e0e1958f4c365e380b17ccb35617345b31ef7bf3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/jfs/jfs_mount.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.12","versionType":"semver"},{"version":"4.19.307","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.269","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.210","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.149","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.77","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.16","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.7.4","status":"unaffected","lessThanOrEqual":"6.7.*","versionType":"semver"},{"version":"6.8","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/jfs/jfs_mount.c"]}],"references":["https://git.kernel.org/stable/c/81b4249ef37297fb17ba102a524039a05c6c5d35","https://git.kernel.org/stable/c/93df0a2a0b3cde2d7ab3a52ed46ea1d6d4aaba5f","https://git.kernel.org/stable/c/bc6ef64dbe71136f327d63b2b9071b828af2c2a8","https://git.kernel.org/stable/c/8e44dc3f96e903815dab1d74fff8faafdc6feb61","https://git.kernel.org/stable/c/32e8f2d95528d45828c613417cb2827d866cbdce","https://git.kernel.org/stable/c/1696d6d7d4a1b373e96428d0fe1166bd7c3c795e","https://git.kernel.org/stable/c/bacdaa04251382d7efd4f09f9a0686bfcc297e2e","https://git.kernel.org/stable/c/e0e1958f4c365e380b17ccb35617345b31ef7bf3","https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html","https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/52xxx/CVE-2023-52600.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-52600","state":"PUBLISHED","datePublished":"2024-03-06T06:45:28.198Z","dateUpdated":"2026-08-05T09:10:34.627Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-03-02T21:55:42.573Z"},"containers":{"cna":{"title":"jfs: fix uaf in jfs_evict_inode","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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"81b4249ef37297fb17ba102a524039a05c6c5d35","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"93df0a2a0b3cde2d7ab3a52ed46ea1d6d4aaba5f","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"bc6ef64dbe71136f327d63b2b9071b828af2c2a8","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"8e44dc3f96e903815dab1d74fff8faafdc6feb61","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"32e8f2d95528d45828c613417cb2827d866cbdce","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"1696d6d7d4a1b373e96428d0fe1166bd7c3c795e","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"bacdaa04251382d7efd4f09f9a0686bfcc297e2e","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"e0e1958f4c365e380b17ccb35617345b31ef7bf3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/jfs/jfs_mount.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.12","versionType":"semver"},{"version":"4.19.307","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.269","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.210","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.149","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.77","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.16","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.7.4","status":"unaffected","lessThanOrEqual":"6.7.*","versionType":"semver"},{"version":"6.8","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/jfs/jfs_mount.c"]}],"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"}],"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."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-05T09:10:34.627Z"},"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"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2023-52600","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-03-06T16:42:50.823357Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-06-04T17:23:10.349Z"}},{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/81b4249ef37297fb17ba102a524039a05c6c5d35","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/93df0a2a0b3cde2d7ab3a52ed46ea1d6d4aaba5f","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/bc6ef64dbe71136f327d63b2b9071b828af2c2a8","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/8e44dc3f96e903815dab1d74fff8faafdc6feb61","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/32e8f2d95528d45828c613417cb2827d866cbdce","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/1696d6d7d4a1b373e96428d0fe1166bd7c3c795e","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/bacdaa04251382d7efd4f09f9a0686bfcc297e2e","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/e0e1958f4c365e380b17ccb35617345b31ef7bf3","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T23:03:21.184Z"}}]}}}