GHSA-GQ92-C2VH-PQWX
Vulnerability from github – Published: 2025-10-24 18:30 – Updated: 2025-10-24 18:30
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
afs: Fix dynamic root getattr
The recent patch to make afs_getattr consult the server didn't account for the pseudo-inodes employed by the dynamic root-type afs superblock not having a volume or a server to access, and thus an oops occurs if such a directory is stat'd.
Fix this by checking to see if the vnode->volume pointer actually points anywhere before following it in afs_getattr().
This can be tested by stat'ing a directory in /afs. It may be sufficient just to do "ls /afs" and the oops looks something like:
BUG: kernel NULL pointer dereference, address: 0000000000000020
...
RIP: 0010:afs_getattr+0x8b/0x14b
...
Call Trace:
<TASK>
vfs_statx+0x79/0xf5
vfs_fstatat+0x49/0x62
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2022-49688"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-26T07:01:43Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nafs: Fix dynamic root getattr\n\nThe recent patch to make afs_getattr consult the server didn\u0027t account\nfor the pseudo-inodes employed by the dynamic root-type afs superblock\nnot having a volume or a server to access, and thus an oops occurs if\nsuch a directory is stat\u0027d.\n\nFix this by checking to see if the vnode-\u003evolume pointer actually points\nanywhere before following it in afs_getattr().\n\nThis can be tested by stat\u0027ing a directory in /afs. It may be\nsufficient just to do \"ls /afs\" and the oops looks something like:\n\n BUG: kernel NULL pointer dereference, address: 0000000000000020\n ...\n RIP: 0010:afs_getattr+0x8b/0x14b\n ...\n Call Trace:\n \u003cTASK\u003e\n vfs_statx+0x79/0xf5\n vfs_fstatat+0x49/0x62",
"id": "GHSA-gq92-c2vh-pqwx",
"modified": "2025-10-24T18:30:56Z",
"published": "2025-10-24T18:30:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49688"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2b2bba96526f25f2eba74ecadb031de2e05a83ce"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/65c24caf1b9f5b08397c6e805ec24ebc390c6e4d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7844ceada44eca740d31beb3d97b8511b1ca0a9b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7b564e3254b7db5fbfbf11a824627a6c31b932b4"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/cb78d1b5efffe4cf97e16766329dd7358aed3deb"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e3a232e5767051483ffad4cef7d0a89d292a192b"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…