CVE-2026-80880IB/mlx5: Properly support implicit ODP rereg_mr
- —Not scoredno CVSS score yet
- 0.16%Exploitation in 30 daysEPSS · top 95% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 9 days later
· 9 days later
Published
- 2 months later
· 2 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.16% · top 95% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected ef3642c4f54d3493c92c71faf46139b2473bc532 – < cbc9982c8573fb9e35040063aa78c8ebe768a1ff
- affected ef3642c4f54d3493c92c71faf46139b2473bc532 – < ee914ef54a7e707453ecb43eb30fb0a5c6dd0d69
- affected ef3642c4f54d3493c92c71faf46139b2473bc532 – < 94f7e50eb6b2ce7fbd9aeac1db22460d2013a3fb
- affected ef3642c4f54d3493c92c71faf46139b2473bc532 – < eb7cb798e563b3f3b3baeb9cc6f7455764267e50
- affected ef3642c4f54d3493c92c71faf46139b2473bc532 – < d4f84bfa089fe71f775d25beb29303e844494c25
- affected ef3642c4f54d3493c92c71faf46139b2473bc532 – < 5d02b9a2efd11d28d2a8feac7769686b1b871d9c
- affected ef3642c4f54d3493c92c71faf46139b2473bc532 – < ee7a8335069150c3f1893a697ab30bbeca00d796
- affected 5.11
- unaffected < 5.11
- unaffected 5.15.212 – ≤ 5.15.*
- unaffected 6.1.178 – ≤ 6.1.*
- unaffected 6.6.145 – ≤ 6.6.*
- unaffected 6.12.97 – ≤ 6.12.*
- unaffected 6.18.40 – ≤ 6.18.*
- unaffected 7.1.5 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References7
- https://git.kernel.org/stable/c/cbc9982c8573fb9e35040063aa78c8ebe768a1ff (opens in a new tab)
- https://git.kernel.org/stable/c/ee914ef54a7e707453ecb43eb30fb0a5c6dd0d69 (opens in a new tab)
- https://git.kernel.org/stable/c/94f7e50eb6b2ce7fbd9aeac1db22460d2013a3fb (opens in a new tab)
- https://git.kernel.org/stable/c/eb7cb798e563b3f3b3baeb9cc6f7455764267e50 (opens in a new tab)
- https://git.kernel.org/stable/c/d4f84bfa089fe71f775d25beb29303e844494c25 (opens in a new tab)
- https://git.kernel.org/stable/c/5d02b9a2efd11d28d2a8feac7769686b1b871d9c (opens in a new tab)
- https://git.kernel.org/stable/c/ee7a8335069150c3f1893a697ab30bbeca00d796 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-71510 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-80880)Record last updated .