CVE-2024-38555 : faille élevée linux linux kernel (CVSS 7.8)

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Discard command completions in internal error Fix use after free when FW completion arrives while device is in internal error state. Avoid calling completion handler in this case, since the device will flush the command interface and trigger all completions manually. Kernel log: ------------[ cut here ]------------ refcount_t: underflow; use-after-free. ... RIP: 0010:refcount_warn_saturate+0xd8/0xe0 ... Call Trace: <IRQ> ? __warn+0x79/0x120 ? refcount_warn_saturate+0xd8/0xe0 ? report_bug+0x17c/0x190 ? handle_bug+0x3c/0x60 ? exc_invalid_op+0x14/0x70 ? asm_exc_invalid_op+0x16/0x20 ? refcount_warn_saturate+0xd8/0xe0 cmd_ent_put+0x13b/0x160 [mlx5_core] mlx5_cmd_comp_handler+0x5f9/0x670 [mlx5_core] cmd_comp_notifier+0x1f/0x30 [mlx5_core] notifier_call_chain+0x35/0xb0 atomic_notifier_call_chain+0x16/0x20 mlx5_eq_async_int+0xf6/0x290 [mlx5_core] notifier_call_chain+0x35/0xb0 atomic_notifier_call_chain+0x16/0x20 irq_int_handler+0x19/0x30 [mlx5_core] __handle_irq_event_percpu+0x4b/0x160 handle_irq_event+0x2e/0x80 handle_edge_irq+0x98/0x230 __common_interrupt+0x3b/0xa0 common_interrupt+0x7b/0xa0 </IRQ> <TASK> asm_common_interrupt+0x22/0x40

Sévérité

Élevée (CVSS 7.8)

Vecteur CVSS

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation active

Non signalée par la CISA

Publication

19 juin 2024

Dernière mise à jour

4 août 2026

• linux linux kernel

• Fiche CVE-2024-38555 sur le NVD (NIST)
• git.kernel.org/stable/c/1337ec94bc5a9eed250e33f5f5c89a28a6bfa…
• git.kernel.org/stable/c/1d5dce5e92a70274de67a59e1e674c3267f94…
• git.kernel.org/stable/c/3cb92b0ad73d3f1734e812054e698d655e958…
• git.kernel.org/stable/c/7ac4c69c34240c6de820492c0a28a0bd14942…
• git.kernel.org/stable/c/bf8aaf0ae01c27ae3c06aa8610caf91e50393…
• git.kernel.org/stable/c/db9b31aa9bc56ff0d15b78f7e827d61c4a096…
• git.kernel.org/stable/c/f6fbb8535e990f844371086ab2c1221f71f99…