Not yet scoredPublished Sep 4, 2026

CVE-2026-80880IB/mlx5: Properly support implicit ODP rereg_mr

Updated under an hour ago (Oct 27, 2026, 1:00 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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 mlx5_ib_reg_user_mr() to allocate a completely new MR. Since implicit children were also touching the mr->pd, this removes another case where the access was racy.

CVSS: Not yet scored
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Sep 4, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from ef3642c4f54d3493c92c71faf46139b2473bc532 before cbc9982c8573fb9e35040063aa78c8ebe768a1ff; from ef3642c4f54d3493c92c71faf46139b2473bc532 before ee914ef54a7e707453ecb43eb30fb0a5c6dd0d69; from ef3642c4f54d3493c92c71faf46139b2473bc532 before 94f7e50eb6b2ce7fbd9aeac1db22460d2013a3fb; from ef3642c4f54d3493c92c71faf46139b2473bc532 before eb7cb798e563b3f3b3baeb9cc6f7455764267e50; from ef3642c4f54d3493c92c71faf46139b2473bc532 before d4f84bfa089fe71f775d25beb29303e844494c25; from ef3642c4f54d3493c92c71faf46139b2473bc532 before 5d02b9a2efd11d28d2a8feac7769686b1b871d9c; from ef3642c4f54d3493c92c71faf46139b2473bc532 before ee7a8335069150c3f1893a697ab30bbeca00d796	CNA record

References

References

https://git.kernel.org/stable/c/cbc9982c8573fb9e35040063aa78c8ebe768a1ff
https://git.kernel.org/stable/c/ee914ef54a7e707453ecb43eb30fb0a5c6dd0d69
https://git.kernel.org/stable/c/94f7e50eb6b2ce7fbd9aeac1db22460d2013a3fb
https://git.kernel.org/stable/c/eb7cb798e563b3f3b3baeb9cc6f7455764267e50
https://git.kernel.org/stable/c/d4f84bfa089fe71f775d25beb29303e844494c25
https://git.kernel.org/stable/c/5d02b9a2efd11d28d2a8feac7769686b1b871d9c
https://git.kernel.org/stable/c/ee7a8335069150c3f1893a697ab30bbeca00d796

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.