CVE-2023-53091
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: ext4: update s_journal_inum if it changes after journal replay When mounting a crafted ext4 image, s_journal_inum may change after journal replay, which is obviously unreasonable because we have successfully loaded and replayed the journal through the old s_journal_inum. And the new s_journal_inum bypasses some of the checks in ext4_get_journal(), which may trigger a null pointer dereference problem. So if s_journal_inum changes after the journal replay, we ignore the change, and rewrite the current journal_inum to the superblock.
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-05-02 16:15:28.073000
Last modified
2026-11-05 21:17:12.393000
View original CVE JSON
{
"id": "CVE-2023-53091",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-05-02T16:15:28.073",
"lastModified": "2026-11-05T21:17:12.393",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: update s_journal_inum if it changes after journal replay\n\nWhen mounting a crafted ext4 image, s_journal_inum may change after journal\nreplay, which is obviously unreasonable because we have successfully loaded\nand replayed the journal through the old s_journal_inum. And the new\ns_journal_inum bypasses some of the checks in ext4_get_journal(), which\nmay trigger a null pointer dereference problem. So if s_journal_inum\nchanges after the journal replay, we ignore the change, and rewrite the\ncurrent journal_inum to the superblock."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ext4: actualizar s_journal_inum si cambia después de la reproducción del diario. Al montar una imagen ext4 manipulada, s_journal_inum puede cambiar después de la reproducción del diario, lo cual es obviamente irrazonable porque hemos cargado y reproducido correctamente el diario a través del antiguo s_journal_inum. Y el nuevo s_journal_inum omite algunas de las comprobaciones en ext4_get_journal(), lo que puede desencadenar un problema de desreferencia de puntero nulo. Por lo tanto, si s_journal_inum cambia después de la reproducción del diario, ignoramos el cambio y reescribimos el journal_inum actual en el superbloque."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"fs/ext4/super.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "345c0dbf3a30872d9b204db96b5857cd00808cae",
"lessThan": "499fef2030fb754c68b1c7cb3a799a3bc1d0d925",
"versionType": "git",
"status": "affected"
},
{
"version": "345c0dbf3a30872d9b204db96b5857cd00808cae",
"lessThan": "70e66bdeae4d0f7c8e87762f425b68aedd5e8955",
"versionType": "git",
"status": "affected"
},
{
"version": "345c0dbf3a30872d9b204db96b5857cd00808cae",
"lessThan": "ee0c5277d4fab920bd31345c49e193ecede9ecef",
"versionType": "git",
"status": "affected"
},
{
"version": "345c0dbf3a30872d9b204db96b5857cd00808cae",
"lessThan": "3039d8b8692408438a618fac2776b629852663c3",
"versionType": "git",
"status": "affected"
},
{
"version": "51890201da4d654f6ca131bc45a0e892bb10de1d",
"versionType": "git",
"status": "affected"
},
{
"version": "7eff961ca9f364be255d279346517ba0158ec8e3",
"versionType": "git",
"status": "affected"
},
{
"version": "a9855260fe8d8680bf8c4f0d8303b696c861e99b",
"versionType": "git",
"status": "affected"
},
{
"version": "795762468125a6412c089651e74f780bee154118",
"versionType": "git",
"status": "affected"
},
{
"version": "2fd4629de51974002f4e9cf1a35a1926dd6c9d99",
"versionType": "git",
"status": "affected"
},
{
"version": "3.16.85",
"lessThan": "3.17",
"versionType": "semver",
"status": "affected"
},
{
"version": "4.4.221",
"lessThan": "4.5",
"versionType": "semver",
"status": "affected"
},
{
"version": "4.9.221",
"lessThan": "4.10",
"versionType": "semver",
"status": "affected"
},
{
"version": "4.14.178",
"lessThan": "4.15",
"versionType": "semver",
"status": "affected"
},
{
"version": "4.19.73",
"lessThan": "4.20",
"versionType": "semver",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"fs/ext4/super.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "5.2",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.2",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.15.104",
"lessThanOrEqual": "5.15.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.21",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.2.8",
"lessThanOrEqual": "6.2.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.3",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Primary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-11-05T20:16:57.244669Z",
"id": "CVE-2023-53091",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-476"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.104",
"matchCriteriaId": "0893F7CB-C597-4A3F-AAF9-26B257A3A77F"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.16",
"versionEndExcluding": "6.1.21",
"matchCriteriaId": "1F1CA6A9-8F4D-408D-9116-868EC067DCD9"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.2",
"versionEndExcluding": "6.2.8",
"matchCriteriaId": "4011EC6B-7786-4709-B765-186FA31D6F7F"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/3039d8b8692408438a618fac2776b629852663c3",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/499fef2030fb754c68b1c7cb3a799a3bc1d0d925",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/70e66bdeae4d0f7c8e87762f425b68aedd5e8955",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/ee0c5277d4fab920bd31345c49e193ecede9ecef",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
}
]
}