CVE-2026-64122

CVE CVE-2026-64122EUVD EUVD-2026-45807Published 2026-07-19T15:40:20.000ZLast changed 2026-08-05T12:39:28.000ZCVSS 9.8

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix use-after-free in mlx5e_tx_reporter_timeout_recover mlx5e_tx_reporter_timeout_recover() accesses sq->netdev after mlx5e_safe_reopen_channels() has torn down and freed the channel (and its embedded SQs). Replace the three sq->netdev references with priv->netdev which is safe because priv outlives channel teardown. The netdev_err() call already used priv->netdev for this reason; make the trylock/unlock and health_channel_eq_recover calls consistent. This fixes the following KASAN splat: BUG: KASAN: use-after-free in mlx5e_tx_reporter_timeout_recover+0x1dd/0x360 [mlx5_core] Read of size 8 at addr ffff889860ed0b28 by task kworker/u113:2/5277 Call Trace: mlx5e_tx_reporter_timeout_recover+0x1dd/0x360 [mlx5_core] devlink_health_reporter_recover+0xa2/0x150 devlink_health_report+0x254/0x7c0 mlx5e_reporter_tx_timeout+0x297/0x380 [mlx5_core] mlx5e_tx_timeout_work+0x109/0x170 [mlx5_core] process_one_work+0x677/0xf20 worker_thread+0x51f/0xd90 kthread+0x3a5/0x810 ret_from_fork+0x208/0x400 ret_from_fork_asm+0x1a/0x30

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 63f9d5fb4d8040077df801ca3270e2f02d55e0d9; 4329514c61abefe4961541b128c549b017bab5ad <1604a2d68414aa4cc34faac0b7faa9c14455e8d3; 6.19.4 <6.20; patch: 7.1; 7.0; patch: 7.0.11; 83ac0304a2d77519dae1e54c9713cbe1aedf19c9 <152295aa7dc2c5e046606f7dadc84fce41136446; 6.18.14 <6.18.34; patch: 6.18.34; patch: 0; 83ac0304a2d77519dae1e54c9713cbe1aedf19c9 <7d260c5d2d89eb2c8c528d54b576b3aae3e20231

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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