Multiple vulnerabilities in Red Hat Linux kernel (July 31, 2026)

unknownCVE-2025-40026 CVE-2026-31787 CVE-2026-31613 CVE-2026-52993 CVE-2026-12505 CVE-2026-43279

Multiple vulnerabilities have been discovered in Red Hat Linux kernel. Some of them allow an attacker to cause remote arbitrary code execution, privilege escalation and remote denial of service.

CSIRTS triage

vendor: Red Hat product: Linux kernel Remote code execution Privilege escalation Denial of service

What: Multiple kernel vulnerabilities including remote code execution, privilege escalation, and denial of service flaws.
Who is affected: Red Hat Enterprise Linux and compatible systems running vulnerable kernel versions.
Urgency: Critical; kernel-level RCE vulnerabilities demand immediate patching across all affected systems.
Action: Apply Red Hat kernel security updates via yum/dnf update to patch all identified vulnerabilities.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: CERT-FR Avis de sécurité (FR · national-cert · site)
Severity: unknown
Published: 2026-07-31
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0955/

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.

Low exploitation riskCVE-2025-400260.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-317870.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 8% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-316130.38% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 31% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-529930.37% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 30% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-125050.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-432790.12% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-462090.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-572310.31% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-530060.40% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 33% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-461160.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2025-40026	coverage & exploitation status	NVD · CVE.org
CVE-2026-31787	coverage & exploitation status	NVD · CVE.org
CVE-2026-31613	coverage & exploitation status	NVD · CVE.org
CVE-2026-52993	coverage & exploitation status	NVD · CVE.org
CVE-2026-12505	coverage & exploitation status	NVD · CVE.org
CVE-2026-43279	coverage & exploitation status	NVD · CVE.org
CVE-2026-46209	coverage & exploitation status	NVD · CVE.org
CVE-2026-57231	coverage & exploitation status	NVD · CVE.org
CVE-2026-53006	coverage & exploitation status	NVD · CVE.org
CVE-2026-46116	coverage & exploitation status	NVD · CVE.org
CVE-2026-43500	coverage & exploitation status	NVD · CVE.org
CVE-2026-46189	coverage & exploitation status	NVD · CVE.org
CVE-2025-68724	coverage & exploitation status	NVD · CVE.org
CVE-2026-31684	coverage & exploitation status	NVD · CVE.org
CVE-2025-68183	coverage & exploitation status	NVD · CVE.org
CVE-2025-10263	coverage & exploitation status	NVD · CVE.org
CVE-2026-52950	coverage & exploitation status	NVD · CVE.org
CVE-2026-53059	coverage & exploitation status	NVD · CVE.org
CVE-2025-38085	coverage & exploitation status	NVD · CVE.org
CVE-2026-46135	coverage & exploitation status	NVD · CVE.org
CVE-2026-52976	coverage & exploitation status	NVD · CVE.org
CVE-2026-31488	coverage & exploitation status	NVD · CVE.org
CVE-2026-46086	coverage & exploitation status	NVD · CVE.org
CVE-2026-43037	coverage & exploitation status	NVD · CVE.org
CVE-2026-43027	coverage & exploitation status	NVD · CVE.org
CVE-2026-64530	coverage & exploitation status	NVD · CVE.org
CVE-2026-53281	coverage & exploitation status	NVD · CVE.org
CVE-2026-52923	coverage & exploitation status	NVD · CVE.org

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