CVE-2026-53294

mailbox: mailbox-test: don't free the reused channel

published June 26, 2026

CVSS
—
EPSS
0%
Percentile
6.8
In the wild
Unconfirmed
What it is

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

mailbox: mailbox-test: don't free the reused channel

The RX channel can be aliased to the TX channel if it has a different

MMIO. This special case needs to be handled when freeing the channels

otherwise a double-free occurs.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00176 · 6.8th percentile
Published
2026-06-26T19:40Z
EPSS history
Timeline
  • 26 JUN 19:40Z
    mailbox: mailbox-test: don't free the reused channel
    cvelistv5