CVE-2026-53277

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

0.10% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 1.0% of scored records. A rank, not a probability.

NVD base score

8.8 (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:C/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-10-21.

Red Hat severity

Important. 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 08:40Z4 MO AGO

Last updated

2026-10-21 12:42Z8 DAYS AGO

Reserved

2026-06-09

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-662Improper SynchronizationClass
• CWE-820Missing SynchronizationBase

Data version

5.2

Document digest

2a4eb0d0c5776d056be7d817b6e1e3cfeefb0ddd640be6b8042dc8d4bc13d74a

• git.kernel.orghttps://git.kernel.org/stable/c/0648b375aa951cc15d9e90f9ac4de71e0b51fa45
• git.kernel.orghttps://git.kernel.org/stable/c/97706097f9b851cfe55c3b00b083dfc2bcf542bc
• git.kernel.orghttps://git.kernel.org/stable/c/ec42b4ed1b072ea2d03f086061aa67bad6d8de39
• git.kernel.orghttps://git.kernel.org/stable/c/f2ca45b50d4216c9cc7ffabf50d9ad1932209251
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-53277vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2492725https://bugzilla.redhat.com/show_bug.cgi?id=2492725issue-trackingx_refsource_REDHAT
• security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53277.jsonx_sadp-csaf-vex
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:64775vendor-advisoryx_refsource_REDHAT