{"id":"CVE-2026-98807","published":"2026-10-18T16:17:34.787","lastModified":"2026-10-19T10:19:44.747","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Fix slab-out-of-bounds when handling team device events\n\nThe mlx5_handle_changeupper_event() and mlx5_handle_changeinfodata_event()\nfunctions check for LAG masters (which includes both bonding and team\ndevices) but only call bonding-specific APIs. When processing team device\nevents, calling bond_slave_get_rcu() and bond_is_slave_inactive() on\nteam_port structures causes KASAN to detect an out-of-bounds memory access\nsince team_port is smaller than bond slave.\n\nFix this by wrapping the bond-specific API calls with a check for bonding\ndevices. This allows the function to still process LAG events for both\nbonding and teams but only calls bond-specific functions when dealing with\nactual bonding devices.\n\nFor mlx5_handle_changeinfodata_event(), keep the explicit bond check as\nmlx5 doesn't handle state information for team ports anyway.\n\nTested with Mellanox ConnectX-5 on Linux 7.2.0-rc6:\n- Bonding: PASS (no regressions)\n- Team device: PASS (no KASAN errors)","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/04c824940d52871c49866a4ac67b504146f7cf35","tags":[]},{"url":"https://git.kernel.org/stable/c/16ca0e79f31ea810346a79dda545ba344ede1d47","tags":[]},{"url":"https://git.kernel.org/stable/c/3a6e67ff267af2053a793825c3b7844741fed461","tags":[]},{"url":"https://git.kernel.org/stable/c/8117cbc504cb01980258d8a8c9be8f57cf0aaceb","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}