net/mlx5: Fix slab-out-of-bounds when handling team device events
CVE-2026-98807 is fixed in 39 products on 1 platform, first by DEBIAN-CVE-2026-98807, released October 19, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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)
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| bpftool6.12 · amzn 2023 | 1:6.12.113-138.209.amzn2023 | ALAS2023-2026-3335 | Nov 7, 2026 |
| bpftool6.12-debuginfo · amzn 2023 | 1:6.12.113-138.209.amzn2023 | ALAS2023-2026-3335 | Nov 7, 2026 |
| bpftool6.18 · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| bpftool6.18-debuginfo · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel-livepatch-6.12.113-138.209 · amzn 2023 | 1:1.0-0.amzn2023 | ALAS2023-2026-3335 | Nov 7, 2026 |
| kernel-livepatch-6.18.56-125.164 · amzn 2023 | 1:1.0-0.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel6.12 · amzn 2023 | 1:6.12.113-138.209.amzn2023 | ALAS2023-2026-3335 | Nov 7, 2026 |
| kernel6.12-debuginfo · amzn 2023 | 1:6.12.113-138.209.amzn2023 | ALAS2023-2026-3335 | Nov 7, 2026 |
| kernel6.12-debuginfo-common-aarch64 · amzn 2023 | 1:6.12.113-138.209.amzn2023 | ALAS2023-2026-3335 | Nov 7, 2026 |
| kernel6.12-debuginfo-common-x86_64 · amzn 2023 | 1:6.12.113-138.209.amzn2023 | ALAS2023-2026-3335 | Nov 7, 2026 |
| kernel6.12-devel · amzn 2023 | 1:6.12.113-138.209.amzn2023 | ALAS2023-2026-3335 | Nov 7, 2026 |
| kernel6.12-headers · amzn 2023 | 1:6.12.113-138.209.amzn2023 | ALAS2023-2026-3335 | Nov 7, 2026 |
| kernel6.12-modules-extra · amzn 2023 | 1:6.12.113-138.209.amzn2023 | ALAS2023-2026-3335 | Nov 7, 2026 |
| kernel6.12-modules-extra-common · amzn 2023 | 1:6.12.113-138.209.amzn2023 | ALAS2023-2026-3335 | Nov 7, 2026 |
| kernel6.12-tools · amzn 2023 | 1:6.12.113-138.209.amzn2023 | ALAS2023-2026-3335 | Nov 7, 2026 |
| kernel6.12-tools-debuginfo · amzn 2023 | 1:6.12.113-138.209.amzn2023 | ALAS2023-2026-3335 | Nov 7, 2026 |
| kernel6.12-tools-devel · amzn 2023 | 1:6.12.113-138.209.amzn2023 | ALAS2023-2026-3335 | Nov 7, 2026 |
| kernel6.18 · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel6.18-debuginfo · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel6.18-debuginfo-common-aarch64 · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel6.18-debuginfo-common-x86_64 · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel6.18-devel · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel6.18-headers · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel6.18-modules-extra · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel6.18-modules-extra-common · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel6.18-tools · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel6.18-tools-debuginfo · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| kernel6.18-tools-devel · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| linux · Debian 13.5 (trixie) | 6.12.113-1 | DEBIAN-CVE-2026-98807 | Oct 19, 2026 |
| linux · Debian 14 | 7.2.10-1 | DEBIAN-CVE-2026-98807 | Oct 19, 2026 |
| linux-6.12 · Debian 12.15 (bookworm) | 6.12.113-1~deb12u1 | DEBIAN-CVE-2026-98807 | Oct 19, 2026 |
| microvm-kernel6.18 · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| perf6.12 · amzn 2023 | 1:6.12.113-138.209.amzn2023 | ALAS2023-2026-3335 | Nov 7, 2026 |
| perf6.12-debuginfo · amzn 2023 | 1:6.12.113-138.209.amzn2023 | ALAS2023-2026-3335 | Nov 7, 2026 |
| perf6.18 · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| perf6.18-debuginfo · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| python3-perf6.12 · amzn 2023 | 1:6.12.113-138.209.amzn2023 | ALAS2023-2026-3335 | Nov 7, 2026 |
| python3-perf6.12-debuginfo · amzn 2023 | 1:6.12.113-138.209.amzn2023 | ALAS2023-2026-3335 | Nov 7, 2026 |
| python3-perf6.18 · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
| python3-perf6.18-debuginfo · amzn 2023 | 1:6.18.56-125.164.amzn2023 | ALAS2023-2026-3251 | Nov 7, 2026 |
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