CVE-2026-80880

IB/mlx5: Properly support implicit ODP rereg_mr

State: Published
Severity: Not scored
Published: Sep 4, 2026
Updated: Sep 4, 2026
Reserved: Aug 26, 2026

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	ef3642c4f54d3493c92c71faf46139b2473bc532 to before cbc9982c8573fb9e35040063aa78c8ebe768a1ffAffected ef3642c4f54d3493c92c71faf46139b2473bc532 to before ee914ef54a7e707453ecb43eb30fb0a5c6dd0d69Affected ef3642c4f54d3493c92c71faf46139b2473bc532 to before 94f7e50eb6b2ce7fbd9aeac1db22460d2013a3fbAffected ef3642c4f54d3493c92c71faf46139b2473bc532 to before eb7cb798e563b3f3b3baeb9cc6f7455764267e50Affected ef3642c4f54d3493c92c71faf46139b2473bc532 to before d4f84bfa089fe71f775d25beb29303e844494c25Affected ef3642c4f54d3493c92c71faf46139b2473bc532 to before 5d02b9a2efd11d28d2a8feac7769686b1b871d9cAffected ef3642c4f54d3493c92c71faf46139b2473bc532 to before ee7a8335069150c3f1893a697ab30bbeca00d796Affected
LinuxLinux	5.11Affected before 5.11Not affected 5.15.212 through 5.15.Not affected 6.1.178 through 6.1.Not affected 6.6.145 through 6.6.Not affected 6.12.97 through 6.12.Not affected 6.18.40 through 6.18.Not affected 7.1.5 through 7.1.Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

ef3642c4f54d3493c92c71faf46139b2473bc532 to before cbc9982c8573fb9e35040063aa78c8ebe768a1ffAffected
ef3642c4f54d3493c92c71faf46139b2473bc532 to before ee914ef54a7e707453ecb43eb30fb0a5c6dd0d69Affected
ef3642c4f54d3493c92c71faf46139b2473bc532 to before 94f7e50eb6b2ce7fbd9aeac1db22460d2013a3fbAffected
ef3642c4f54d3493c92c71faf46139b2473bc532 to before eb7cb798e563b3f3b3baeb9cc6f7455764267e50Affected
ef3642c4f54d3493c92c71faf46139b2473bc532 to before d4f84bfa089fe71f775d25beb29303e844494c25Affected
ef3642c4f54d3493c92c71faf46139b2473bc532 to before 5d02b9a2efd11d28d2a8feac7769686b1b871d9cAffected
ef3642c4f54d3493c92c71faf46139b2473bc532 to before ee7a8335069150c3f1893a697ab30bbeca00d796Affected

LinuxLinux

5.11Affected
before 5.11Not affected
5.15.212 through 5.15.*Not affected
6.1.178 through 6.1.*Not affected
6.6.145 through 6.6.*Not affected
6.12.97 through 6.12.*Not affected
6.18.40 through 6.18.*Not affected
7.1.5 through 7.1.*Not affected
7.2 and laterNot affected

References

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