CVE-2025-21800

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Source
https://nvd.nist.gov/vuln/detail/CVE-2025-21800
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-21800.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-21800
Downstream
Related
Published
2025-02-27T20:00:54.884Z
Modified
2025-11-27T02:33:56.019331Z
Summary
net/mlx5: HWS, fix definer's HWS_SET32 macro for negative offset
Details

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

net/mlx5: HWS, fix definer's HWS_SET32 macro for negative offset

When bit offset for HWS_SET32 macro is negative, UBSAN complains about the shift-out-of-bounds:

UBSAN: shift-out-of-bounds in drivers/net/ethernet/mellanox/mlx5/core/steering/hws/definer.c:177:2 shift exponent -8 is negative

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/blob/cc431b3424123d84bcd7afd4de150b33f117a8ef/cves/2025/21xxx/CVE-2025-21800.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
74a778b4a63faef9ff02aad0d332b209835f93e1
Fixed
92cff996624c4757d5bbace3dfa3f1567ba94143
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
74a778b4a63faef9ff02aad0d332b209835f93e1
Fixed
69c676c0ded472713e6d1b3a456b3c4f52f66f0e
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
74a778b4a63faef9ff02aad0d332b209835f93e1
Fixed
be482f1d10da781db9445d2753c1e3f1fd82babf

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.12.0
Fixed
6.12.13
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.13.2