CVE-2026-53239

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.17% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 6.5% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Analyzed. NVD last modified this record on 2026-07-08.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-06-25 08:39Z2 MO AGO

Last updated

2026-08-05 12:34Z29 DAYS AGO

Reserved

2026-06-09

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

• CWE-416Use After FreeVariant
• CWE-364Signal Handler Race ConditionBase

Data version

5.2

Document digest

6164a7a4b09c2672071524c973711e8a17f3f8c215a079aaab8dc8b1adb8995e

• git.kernel.orghttps://git.kernel.org/stable/c/8fc536e9f6856230f19c7d13e71af064b6a77b22
• git.kernel.orghttps://git.kernel.org/stable/c/c4c1ea36d83bf3c4569468ca5b8b614fda1bf821
• git.kernel.orghttps://git.kernel.org/stable/c/25c8c7fb3b0b9668c7d05e209f58c158d2b020c7
• git.kernel.orghttps://git.kernel.org/stable/c/42827d03f8009a6a218bacab153e21f39d6a121c
• git.kernel.orghttps://git.kernel.org/stable/c/88697cf980222d5906a37bf47662dac0732e2a0f
• git.kernel.orghttps://git.kernel.org/stable/c/b5316e2b8614a87d8736941972441cb47bfd4491
• git.kernel.orghttps://git.kernel.org/stable/c/ec82ea4eb220164d854f8734ca5a35e23e577b94
• git.kernel.orghttps://git.kernel.org/stable/c/7f2d76c9c03257c0782afef9d95321fa04096f60