Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Linux Linux — net/mlx5: Discard command completions in internal error
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U H H H 7.8 .0026 18.0 —
AFFECTED
Product Versions Fixed
Linux 27c79b3a9212cf4ba634c157e07d29548181a208 – —
Linux 5.12 – 5.10.219
TIMELINE
Jun 18 Reserved by Linux
Jun 19 Published (CNA: Linux)
Aug 4 RESCORED — CVE-2024-38555 (Linux). CVSS 7 → 7.8 (NVD).
Description
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
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| June 18, 2024 | Reserved | Reserved by Linux |
| June 19, 2024 | Published | Published (CNA: Linux) |
| August 4, 2026 | RESCORED | RESCORED — CVE-2024-38555 (Linux). CVSS 7 → 7.8 (NVD). |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Linux | Linux | — | 27c79b3a9212cf4ba634c157e07d29548181a208 | — |
| Linux | Linux | — | 5.12 | 5.10.219 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2024-38555 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.