CVE-2026-23421

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 36/100
Published: 2026-04-03 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Low Complexity No Interaction

CVSS Vector Breakdown

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

Description

In the Linux kernel, the following vulnerability has been resolved: drm/xe/configfs: Free ctx_restore_mid_bb in release ctx_restore_mid_bb memory is allocated in wa_bb_store(), but xe_config_device_release() only frees ctx_restore_post_bb. Free ctx_restore_mid_bb[0].cs as well to avoid leaking the allocation when the configfs device is removed. (cherry picked from commit a235e7d0098337c3f2d1e8f3610c719a589e115f)

Affected Software (13)

VendorProductVersion
Linux Linux b30d5de3d40c3fa642079bac0d91f17091c5f877 < 7f971dfd48983074adc7bbcea3ee95ce7aad47cb
Linux Linux b30d5de3d40c3fa642079bac0d91f17091c5f877 < 3557359ea3df32430ea7c30f7a708ca9a91d7e0e
Linux Linux b30d5de3d40c3fa642079bac0d91f17091c5f877 < e377182f0266f46f02d01838e6bde67b9dac0d66
Linux Linux 6.18
linux linux_kernel 6.18.1 – 6.18.17
linux linux_kernel 6.18
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0

Bug Bounty Relevance

36 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

5.5 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.12%
Raw Score 0.001170
Percentile 1.7%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00117
2026-11-13
0.00117
2026-11-12
0.00117
2026-11-10
0.00117
2026-11-09
0.00117
2026-11-08
0.00117
2026-11-07
0.00117
2026-11-06
0.00117
2026-11-05
0.00117

Intelligence Sources

mitre ref →
nvd ref →