CVE-2026-89954

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Source
https://cve.org/CVERecord?id=CVE-2026-89954
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89954.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-89954
Downstream
Published
2026-09-16T10:32:38Z
Modified
2026-09-17T03:47:20Z
Severity
  • 8.0 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H CVSS Calculator
Summary
mtd: afs: validate v2 image info bounds
Details

In the Linux kernel, the following vulnerability has been resolved:

mtd: afs: validate v2 image info bounds

The AFS v2 parser uses footer[8] to locate the image information block inside the current erase block, then uses the image information region_count to walk entries from a fixed local array. The footer offset and region count come from flash contents and are not checked against the erase block or the local image-info array before use.

Reject v2 entries whose image information offset would underflow the erase block calculation, and reject region counts that cannot fit in the local image-info array before walking region entries.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89954.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
b7cf5e2830bbb128699d7635ce8404b7f605bc95
Fixed
1bec05a68414cf8d0cab6cb42445b8603f32ffc4
Fixed
3ad8ff12fd44b08af9212ac4883a7e29d2ab7348
Fixed
875daa3c750814ff2e2dc050239c390048f0bcd0
Fixed
da740539e8f370767317e24615349b9342a6e773
Fixed
1edea8900ca3e405c1421d8b5c29f97107874f72
Fixed
18916f475057cbd2fb8ea6ae86e6b85884ad1d53
Fixed
d14e6298139f58a87a87d7022e26a7f37f0ddce7
Fixed
e9290031f736e99ad17c25c00311c92c266843b7

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89954.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.2.0
Fixed
5.10.270
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.221
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.188
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.157
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.110
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.51
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
7.2.5

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89954.json"