CVE-2026-31493CWE-416

CVE-2026-31493

High · published April 22, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
6.7
In the wild
Unconfirmed
What it is

In the Linux kernel, the following vulnerability has been resolved:

RDMA/efa: Fix use of completion ctx after free

On admin queue completion handling, if the admin command completed with

error we print data from the completion context. The issue is that we

already freed the completion context in polling/interrupts handler which

means we print data from context in an unknown state (it might be

already used again).

Change the admin submission flow so alloc/dealloc of the context will be

symmetric and dealloc will be called after any potential use of the

context.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00175 · 6.7th percentile
Weakness
CWE-416 · Use After Free
Published
2026-04-22T18:16Z
Affected products (10)
ProductVersionsFixed in
linux/linux_kernel≥ 5.12.1, < 6.18.216.18.21
linux/linux_kernel≥ 6.19, < 6.19.116.19.11
linux/linux_kernelall versions—
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References (5)
EPSS history
Timeline
  • 22 APR 13:54Z
    RDMA/efa: Fix use of completion ctx after free
    cvelistv5