net/mlx5: Fix slab-out-of-bounds when handling team device events (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.18 % · percentile 7 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Fix slab-out-of-bounds when handling team device events The mlx5_handle_changeupper_event() and mlx5_handle_changeinfodata_event() functions check for LAG masters (which includes both bonding and team devices) but only call bonding-specific APIs. When processing team device events, calling bond_slave_get_rcu() and bond_is_slave_inactive() on team_port structures causes KASAN to detect an out-of-bounds memory access since team_port is smaller than bond slave. Fix this by wrapping the bond-specific API calls with a check for bonding devices. This allows the function to still process LAG events for both bonding and teams but only calls bond-specific functions when dealing with actual bonding devices. For mlx5_handle_changeinfodata_event(), keep the explicit bond check as mlx5 doesn't handle state information for team ports anyway. Tested with Mellanox ConnectX-5 on Linux 7.2.0-rc6: - Bonding: PASS (no regressions) - Team device: PASS (no KASAN errors)
References
European references
- ENISA EUVD · EUVD-2026-103892
- GCVE · GCVE-0-2026-98807
CERT-FR advisories
- CERTFR-2026-AVI-1375 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 54493a08e21f46446b3b24577c5a6f229d049757 < 16ca0e79f31ea810346a79dda545ba344ede1d47 ; affected 54493a08e21f46446b3b24577c5a6f229d049757 < 3a6e67ff267af2053a793825c3b7844741fed461 ; affected 54493a08e21f46446b3b24577c5a6f229d049757 < 8117cbc504cb01980258d8a8c9be8f57cf0aaceb ; affected 54493a08e21f46446b3b24577c5a6f229d049757 < 04c824940d52871c49866a4ac67b504146f7cf35 |
| Linux · Linux | affected 5.18 ; unaffected 0 < 5.18 ; unaffected 6.12.113 ≤ 6.12.* ; unaffected 6.18.56 ≤ 6.18.* ; unaffected 7.2.10 ≤ 7.2.* ; unaffected 7.3 ≤ * |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |