CVE-2026-53294

HIGH
MEDIUM Priority: 0.01 BB Relevance: 41/100
Published: 2026-06-26 Modified: 2026-11-06 First seen: 2026-11-06 Status: active

Attack Surface

Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: Unchanged
C: High
I: High
A: High

Description

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.

Weakness Classification (1)

Affected Software (11)

VendorProductVersion
Linux Linux 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < fc0089f82c3e36060c2c79156bc2018bfb16b56b
Linux Linux 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < 5d4f3d0f64f1016cb78b400a70b67df91fac99b5
Linux Linux 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < c494a11da45ad7ec9b0ff216c3e3ace351193bb6
Linux Linux 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < 3afca89fae501dbd7421e1777b5b8f033b1d98d0
Linux Linux 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < 5c209299b0113e289e238fa5f2e8f00c59f76060
Linux Linux 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < 82f6dcea46cf5de65c4ba7283f7c7b34de4a324d
Linux Linux 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < 240c71a2aea36a1a4210f911a1c32ea88777e8e4
Linux Linux 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 < 88ebadbf0deefdaccdab868b44ff70a0a257f473
Linux Linux 4.4
linux linux_kernel 4.4 – 5.10.258
linux linux_kernel 7.1

Bug Bounty Relevance

41 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

7.8 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.18%
Raw Score 0.001760
Percentile 7.1%
Date 2026-11-06

Intelligence Sources

mitre ref →
nvd ref →