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CVE-2026-53362: Linux Kernel Unspecified Vulnerability

criticalknown exploitedpublic exploitCVE-2026-53362
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Linux Kernel contains an unspecified vulnerability that can allow for privilege escalation via IPv6 networking subsystem. This vulnerability can impact multiple products, including but not limited to Suse, Red Hat, and other products using Linux.

CSIRTS triage

vendor: Linuxproduct: Linux KernelPrivilege escalation
What
Linux kernel contains an unspecified vulnerability allowing privilege escalation through the IPv6 networking subsystem.
Who is affected
Linux systems across distributions (SUSE, Red Hat, others) using IPv6 or the affected kernel versions.
Urgency
Critical; actively exploited vulnerability on CISA's Known Exploited Vulnerabilities catalog requiring prioritized remediation.
Action
Apply Linux kernel patches from your distribution immediately.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2026-08-27
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-53362

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-53362coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

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