CVE-2026-80880
IB/mlx5: Properly support implicit ODP rereg_mr
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
5.11
References 7
git.kernel.org
- stable/c/cbc9982c8573fb9e35040063aa78c8ebe768a1ff
- stable/c/ee914ef54a7e707453ecb43eb30fb0a5c6dd0d69
- stable/c/94f7e50eb6b2ce7fbd9aeac1db22460d2013a3fb
- stable/c/eb7cb798e563b3f3b3baeb9cc6f7455764267e50
- stable/c/d4f84bfa089fe71f775d25beb29303e844494c25
- stable/c/5d02b9a2efd11d28d2a8feac7769686b1b871d9c
- stable/c/ee7a8335069150c3f1893a697ab30bbeca00d796