328 lines
17 KiB
JSON
328 lines
17 KiB
JSON
{
|
||
"dataType": "CVE_RECORD",
|
||
"dataVersion": "5.2",
|
||
"cveMetadata": {
|
||
"cveId": "CVE-2023-53222",
|
||
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
||
"state": "PUBLISHED",
|
||
"assignerShortName": "Linux",
|
||
"dateReserved": "2025-09-15T14:19:21.845Z",
|
||
"datePublished": "2025-09-15T14:21:50.970Z",
|
||
"dateUpdated": "2026-08-05T09:13:10.735Z"
|
||
},
|
||
"containers": {
|
||
"cna": {
|
||
"providerMetadata": {
|
||
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
||
"shortName": "Linux",
|
||
"dateUpdated": "2026-08-05T09:13:10.735Z"
|
||
},
|
||
"descriptions": [
|
||
{
|
||
"lang": "en",
|
||
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\njfs: jfs_dmap: Validate db_l2nbperpage while mounting\n\nIn jfs_dmap.c at line 381, BLKTODMAP is used to get a logical block\nnumber inside dbFree(). db_l2nbperpage, which is the log2 number of\nblocks per page, is passed as an argument to BLKTODMAP which uses it\nfor shifting.\n\nSyzbot reported a shift out-of-bounds crash because db_l2nbperpage is\ntoo big. This happens because the large value is set without any\nvalidation in dbMount() at line 181.\n\nThus, make sure that db_l2nbperpage is correct while mounting.\n\nMax number of blocks per page = Page size / Min block size\n=> log2(Max num_block per page) = log2(Page size / Min block size)\n\t\t\t\t= log2(Page size) - log2(Min block size)\n\n=> Max db_l2nbperpage = L2PSIZE - L2MINBLOCKSIZE"
|
||
}
|
||
],
|
||
"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 after a local mount of an attacker-crafted JFS image on a block/loop device (mount → jfs_fill_super → jfs_mount → dbMount, then later dbFree); there is no network or adjacent-protocol path into fs/jfs.\nAC:L - dn_l2nbperpage is taken verbatim from the on-disk bmap descriptor, so the attacker sets the out-of-range shift amount deterministically; any subsequent free/truncate/umount path that calls BLKTODMAP/dbFree hits the bug with no race or uncontrollable state.\nPR:L - As with sibling JFS crafted-image CVEs, an unprivileged local session user can get the malicious image attached via udisks2/polkit/automount on desktops, kiosks, and shared workstations, then trigger dbFree with ordinary file operations or unmount on that volume.\nUI:N - The attacker supplies the image, causes it to be mounted (including via automount/udisks on their own session), and drives the free/umount path themselves; no separate victim action is required at exploitation time.\nS:U - Wrong metapage selection and allocator/metadata corruption stay inside the kernel’s own memory and security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - An oversized db_l2nbperpage makes BLKTODMAP compute attacker-influenced logical block numbers so dbFree reads the wrong (still attacker-controlled) dmap metapage and walks its summary tree/bitmaps, yielding out-of-bounds reads of adjacent kernel/metapage memory that can be leveraged for disclosure, consistent with other JFS dmap shift-OOB scores.\nI:H - dbFreeDmap/dbFreeBits then write wmap/tree/nfree and in-memory db_agfree[] based on that wrong page and undefined shift results, corrupting heap-backed metapage and bmap state into a write primitive suitable for control-flow hijacking under the higher-severity rule for memory corruption.\nA:H - Syzbot reproduced this as UBSAN shift-out-of-bounds in dbFree (panic under UBSAN_TRAP/panic_on_warn), and the corrupted metapage/allocator paths also produce oopses and jfs_error filesystem shutdown."
|
||
}
|
||
]
|
||
}
|
||
],
|
||
"affected": [
|
||
{
|
||
"product": "Linux",
|
||
"vendor": "Linux",
|
||
"defaultStatus": "unaffected",
|
||
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
||
"programFiles": [
|
||
"fs/jfs/jfs_dmap.c",
|
||
"fs/jfs/jfs_filsys.h"
|
||
],
|
||
"versions": [
|
||
{
|
||
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
|
||
"lessThan": "8c1efe3f74a7864461b0dff281c5562154b4aa8e",
|
||
"status": "affected",
|
||
"versionType": "git"
|
||
},
|
||
{
|
||
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
|
||
"lessThan": "ef5c205b6e6f8d1f18ef0b4a9832b1b5fa85f7f2",
|
||
"status": "affected",
|
||
"versionType": "git"
|
||
},
|
||
{
|
||
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
|
||
"lessThan": "a4855aeb13e4ad1f23e16753b68212e180f7d848",
|
||
"status": "affected",
|
||
"versionType": "git"
|
||
},
|
||
{
|
||
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
|
||
"lessThan": "47b7eaae08e8b2f25bdf37bc14d21be090bcb20f",
|
||
"status": "affected",
|
||
"versionType": "git"
|
||
},
|
||
{
|
||
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
|
||
"lessThan": "de984faecddb900fa850af4df574a25b32bb93f5",
|
||
"status": "affected",
|
||
"versionType": "git"
|
||
},
|
||
{
|
||
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
|
||
"lessThan": "c7feb54b113802d2aba98708769d3c33fb017254",
|
||
"status": "affected",
|
||
"versionType": "git"
|
||
},
|
||
{
|
||
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
|
||
"lessThan": "2a03c4e683d33d17b667418eb717b13dda1fac6b",
|
||
"status": "affected",
|
||
"versionType": "git"
|
||
},
|
||
{
|
||
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
|
||
"lessThan": "11509910c599cbd04585ec35a6d5e1a0053d84c1",
|
||
"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_dmap.c",
|
||
"fs/jfs/jfs_filsys.h"
|
||
],
|
||
"versions": [
|
||
{
|
||
"version": "2.6.12",
|
||
"status": "affected"
|
||
},
|
||
{
|
||
"version": "0",
|
||
"lessThan": "2.6.12",
|
||
"status": "unaffected",
|
||
"versionType": "semver"
|
||
},
|
||
{
|
||
"version": "4.14.322",
|
||
"lessThanOrEqual": "4.14.*",
|
||
"status": "unaffected",
|
||
"versionType": "semver"
|
||
},
|
||
{
|
||
"version": "4.19.291",
|
||
"lessThanOrEqual": "4.19.*",
|
||
"status": "unaffected",
|
||
"versionType": "semver"
|
||
},
|
||
{
|
||
"version": "5.4.251",
|
||
"lessThanOrEqual": "5.4.*",
|
||
"status": "unaffected",
|
||
"versionType": "semver"
|
||
},
|
||
{
|
||
"version": "5.10.188",
|
||
"lessThanOrEqual": "5.10.*",
|
||
"status": "unaffected",
|
||
"versionType": "semver"
|
||
},
|
||
{
|
||
"version": "5.15.121",
|
||
"lessThanOrEqual": "5.15.*",
|
||
"status": "unaffected",
|
||
"versionType": "semver"
|
||
},
|
||
{
|
||
"version": "6.1.40",
|
||
"lessThanOrEqual": "6.1.*",
|
||
"status": "unaffected",
|
||
"versionType": "semver"
|
||
},
|
||
{
|
||
"version": "6.4.5",
|
||
"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": "2.6.12",
|
||
"versionEndExcluding": "4.14.322"
|
||
},
|
||
{
|
||
"vulnerable": true,
|
||
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
||
"versionStartIncluding": "2.6.12",
|
||
"versionEndExcluding": "4.19.291"
|
||
},
|
||
{
|
||
"vulnerable": true,
|
||
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
||
"versionStartIncluding": "2.6.12",
|
||
"versionEndExcluding": "5.4.251"
|
||
},
|
||
{
|
||
"vulnerable": true,
|
||
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
||
"versionStartIncluding": "2.6.12",
|
||
"versionEndExcluding": "5.10.188"
|
||
},
|
||
{
|
||
"vulnerable": true,
|
||
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
||
"versionStartIncluding": "2.6.12",
|
||
"versionEndExcluding": "5.15.121"
|
||
},
|
||
{
|
||
"vulnerable": true,
|
||
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
||
"versionStartIncluding": "2.6.12",
|
||
"versionEndExcluding": "6.1.40"
|
||
},
|
||
{
|
||
"vulnerable": true,
|
||
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
||
"versionStartIncluding": "2.6.12",
|
||
"versionEndExcluding": "6.4.5"
|
||
},
|
||
{
|
||
"vulnerable": true,
|
||
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
||
"versionStartIncluding": "2.6.12",
|
||
"versionEndExcluding": "6.5"
|
||
}
|
||
]
|
||
}
|
||
]
|
||
}
|
||
],
|
||
"references": [
|
||
{
|
||
"url": "https://git.kernel.org/stable/c/8c1efe3f74a7864461b0dff281c5562154b4aa8e"
|
||
},
|
||
{
|
||
"url": "https://git.kernel.org/stable/c/ef5c205b6e6f8d1f18ef0b4a9832b1b5fa85f7f2"
|
||
},
|
||
{
|
||
"url": "https://git.kernel.org/stable/c/a4855aeb13e4ad1f23e16753b68212e180f7d848"
|
||
},
|
||
{
|
||
"url": "https://git.kernel.org/stable/c/47b7eaae08e8b2f25bdf37bc14d21be090bcb20f"
|
||
},
|
||
{
|
||
"url": "https://git.kernel.org/stable/c/de984faecddb900fa850af4df574a25b32bb93f5"
|
||
},
|
||
{
|
||
"url": "https://git.kernel.org/stable/c/c7feb54b113802d2aba98708769d3c33fb017254"
|
||
},
|
||
{
|
||
"url": "https://git.kernel.org/stable/c/2a03c4e683d33d17b667418eb717b13dda1fac6b"
|
||
},
|
||
{
|
||
"url": "https://git.kernel.org/stable/c/11509910c599cbd04585ec35a6d5e1a0053d84c1"
|
||
}
|
||
],
|
||
"title": "jfs: jfs_dmap: Validate db_l2nbperpage while mounting",
|
||
"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-2023-53222",
|
||
"role": "CISA Coordinator",
|
||
"options": [
|
||
{
|
||
"Exploitation": "none"
|
||
},
|
||
{
|
||
"Automatable": "no"
|
||
},
|
||
{
|
||
"Technical Impact": "partial"
|
||
}
|
||
],
|
||
"version": "2.0.3",
|
||
"timestamp": "2026-01-14T17:50:30.557530Z"
|
||
}
|
||
}
|
||
}
|
||
],
|
||
"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": "2026-01-14T17:52:59.269Z"
|
||
}
|
||
}
|
||
]
|
||
}
|
||
} |