fkie_cve-2022-49747
Vulnerability from fkie_nvd
Published
2025-03-27 17:15
Modified
2025-10-29 17:18
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
erofs/zmap.c: Fix incorrect offset calculation
Effective offset to add to length was being incorrectly calculated,
which resulted in iomap->length being set to 0, triggering a WARN_ON
in iomap_iter_done().
Fix that, and describe it in comments.
This was reported as a crash by syzbot under an issue about a warning
encountered in iomap_iter_done(), but unrelated to erofs.
C reproducer: https://syzkaller.appspot.com/text?tag=ReproC&x=1037a6b2880000
Kernel config: https://syzkaller.appspot.com/text?tag=KernelConfig&x=e2021a61197ebe02
Dashboard link: https://syzkaller.appspot.com/bug?extid=a8e049cd3abd342936b6
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | 6.2 | |
| linux | linux_kernel | 6.2 | |
| linux | linux_kernel | 6.2 | |
| linux | linux_kernel | 6.2 |
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "CC24FFD4-3B7F-4D3F-B022-9C6314AEB133",
"versionEndExcluding": "5.15.92",
"versionStartIncluding": "5.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "482D2612-A4D4-4A68-AC23-52F6BE89878B",
"versionEndExcluding": "6.1.10",
"versionStartIncluding": "5.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:*",
"matchCriteriaId": "FF501633-2F44-4913-A8EE-B021929F49F6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:*",
"matchCriteriaId": "2BDA597B-CAC1-4DF0-86F0-42E142C654E9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:*",
"matchCriteriaId": "725C78C9-12CE-406F-ABE8-0813A01D66E8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.2:rc4:*:*:*:*:*:*",
"matchCriteriaId": "A127C155-689C-4F67-B146-44A57F4BFD85",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs/zmap.c: Fix incorrect offset calculation\n\nEffective offset to add to length was being incorrectly calculated,\nwhich resulted in iomap-\u003elength being set to 0, triggering a WARN_ON\nin iomap_iter_done().\n\nFix that, and describe it in comments.\n\nThis was reported as a crash by syzbot under an issue about a warning\nencountered in iomap_iter_done(), but unrelated to erofs.\n\nC reproducer: https://syzkaller.appspot.com/text?tag=ReproC\u0026x=1037a6b2880000\nKernel config: https://syzkaller.appspot.com/text?tag=KernelConfig\u0026x=e2021a61197ebe02\nDashboard link: https://syzkaller.appspot.com/bug?extid=a8e049cd3abd342936b6"
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: erofs/zmap.c: Se corrigi\u00f3 el c\u00e1lculo incorrecto del desplazamiento. El desplazamiento efectivo para a\u00f1adir a length se calculaba incorrectamente, lo que provocaba que iomap-\u0026gt;length se estableciera en 0, lo que activaba un WARN_ON en iomap_iter_done(). Se corrigi\u00f3 y se describi\u00f3 en los comentarios. syzbot report\u00f3 esto como un fallo en un problema relacionado con una advertencia encontrada en iomap_iter_done(), pero no relacionada con erofs. Reproductor C: https://syzkaller.appspot.com/text?tag=ReproC\u0026amp;x=1037a6b2880000 Configuraci\u00f3n del kernel: https://syzkaller.appspot.com/text?tag=KernelConfig\u0026amp;x=e2021a61197ebe02 Enlace del panel: https://syzkaller.appspot.com/bug?extid=a8e049cd3abd342936b6"
}
],
"id": "CVE-2022-49747",
"lastModified": "2025-10-29T17:18:00.510",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2025-03-27T17:15:39.477",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/2144859229c1e74f52d3ea067338d314a83a8afb"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/6acd87d50998ef0afafc441613aeaf5a8f5c9eff"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/9f31d8c889d9a4e47bfcc6c4537d0c9f89fe582c"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…