CVE-2026-80880

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Source
https://cve.org/CVERecord?id=CVE-2026-80880
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80880.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-80880
Downstream
Published
2026-09-04T16:49:05.562Z
Modified
2026-09-06T03:46:55.866034941Z
Summary
IB/mlx5: Properly support implicit ODP rereg_mr
Details

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

IB/mlx5: Properly support implicit ODP rereg_mr

Due to all the child mkeys in the implicit ODP configuration we cannot change anything in place for the parent mkey. Instead the whole thing needs to be rebuilt if any change is requested. If the user does not specify a translation then force the implicit values which will then fall through the logic into mlx5ibregusermr() to allocate a completely new MR.

Since implicit children were also touching the mr->pd, this removes another case where the access was racy.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80880.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
ef3642c4f54d3493c92c71faf46139b2473bc532
Fixed
cbc9982c8573fb9e35040063aa78c8ebe768a1ff
Fixed
ee914ef54a7e707453ecb43eb30fb0a5c6dd0d69
Fixed
94f7e50eb6b2ce7fbd9aeac1db22460d2013a3fb
Fixed
eb7cb798e563b3f3b3baeb9cc6f7455764267e50
Fixed
d4f84bfa089fe71f775d25beb29303e844494c25
Fixed
5d02b9a2efd11d28d2a8feac7769686b1b871d9c
Fixed
ee7a8335069150c3f1893a697ab30bbeca00d796

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80880.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.212
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.178
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.145
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.97
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.40
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
7.1.5

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80880.json"