Multiple vulnerabilities in Red Hat Linux kernel (July 3, 2026)
Multiple vulnerabilities have been discovered in the Red Hat Linux kernel. Some of them allow an attacker to cause remote arbitrary code execution, privilege escalation, and a remote denial of service.
CSIRTS triage
- What
- Multiple vulnerabilities allow an attacker to cause remote arbitrary code execution, privilege escalation, and a remote denial of service.
- Who is affected
- Deployments of the Red Hat Linux kernel are affected.
- Urgency
- Remediation is urgent due to the potential for exploitation and the severity of the vulnerabilities.
- Action
- Apply the latest security patches provided by Red Hat.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0832/
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-2026-431980.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 22% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-48780.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-458520.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-462270.10% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 1% of all EPSS-scored CVEs.
- Exploitation likely imminentCVE-2026-43284EPSS puts this in the most-targeted tier (93.2% 30-day exploitation probability). Prioritize alongside KEV items. Riskier than 99.8% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-461730.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all EPSS-scored CVEs.
- Exploitation confirmedCVE-2026-31431Already exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 99.9% 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-2026-463310.53% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 42% 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 3% of all EPSS-scored CVEs.
Referenced CVEs
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownUSN-8666-2: Linux kernel (Azure) vulnerabilitiesubuntu
- unknownUSN-8630-5: Linux kernel (Raspberry Pi) vulnerabilitiesubuntu
- medium[UPDATE] [medium] Linux Kernel: Multiple Vulnerabilitiescert-bund
- medium[UPDATE] [medium] Linux Kernel: Multiple Vulnerabilitiescert-bund
- medium[UPDATE] [medium] Red Hat Hardened Images RPMs: Multiple vulnerabilitiescert-bund
- highexploited[UPDATE] [high] Linux Kernel: Multiple vulnerabilitiescert-bund
- medium[UPDATE] [medium] Linux Kernel: Multiple Vulnerabilitiescert-bund
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilitiescert-bund
- high[UPDATE] [high] Linux Kernel: Vulnerability allows privilege escalationcert-bund
- high[UPDATE] [high] Linux Kernel: Multiple vulnerabilities enable denial of servicecert-bund
- high[UPDATE] [high] Microsoft Windows: Multiple vulnerabilitiescert-bund
- high[UPDATE] [high] Linux Kernel: Multiple vulnerabilitiescert-bund
Recent advisories for Red Hat Linux
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- high[NEW] [high] Red Hat Enterprise Linux (Apicurio Registry): Multiple Vulnerabilitiescert-bund · 2026-08-25
- medium[NEW] [medium] Red Hat Enterprise Linux (pyasn1): Vulnerability enables Denial of Servicecert-bund · 2026-08-25
- high[NEW] [high] Red Hat Enterprise Linux (mrtg, kbd, urwid): Multiple vulnerabilitiescert-bund · 2026-08-25
- high[UPDATE] [high] Fast Datapath for Red Hat Enterprise Linux (ovn): Multiple Vulnerabilitiescert-bund · 2026-08-25
- medium[NEW] [medium] Red Hat Enterprise Linux (yelp, dracut): Multiple vulnerabilitiescert-bund · 2026-08-25
- high[NEW] [high] Red Hat Enterprise Linux (nodejs:24): Multiple vulnerabilitiescert-bund · 2026-08-25
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