[UPDATE] [high] Linux Kernel: Multiple vulnerabilities
An attacker can exploit multiple vulnerabilities in the Linux Kernel to escalate their privileges, cause a denial of service condition, or achieve other unspecified effects.
CSIRTS triage
- What
- Multiple vulnerabilities in the Linux Kernel can be exploited to escalate privileges, cause denial of service, or achieve other unspecified effects.
- Who is affected
- Local deployments of the Linux Kernel.
- Urgency
- Remediation is urgent due to high severity and confirmed exploitation.
- Action
- Apply the latest patches to the Linux Kernel.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch Linux Kernel
Get an email when a new Linux Kernel advisory drops — max one per day, one-click unsubscribe.
Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1232
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.
- Exploitation likely imminentCVE-2026-31431EPSS puts this in the most-targeted tier (96.3% 30-day exploitation probability). Prioritize alongside KEV items. Riskier than 100% of all scored CVEs.
- Low exploitation riskCVE-2026-314320.51% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 40% of all scored CVEs.
- Low exploitation riskCVE-2026-314330.60% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 45% of all 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 100% of all scored CVEs.
- Exploitation likely imminentCVE-2026-43500EPSS puts this in the most-targeted tier (92.8% 30-day exploitation probability). Prioritize alongside KEV items. Riskier than 100% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-31431 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-31432 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-31433 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-43284 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-43500 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- high[UPDATE] [high] Linux Kernel (Dirty Frag): Multiple vulnerabilities allow gaining administrator rightscert-bund
- unknownUSN-8530-1: Linux kernel (AWS) vulnerabilitiesubuntu
- unknownexploitedUSN-8528-1: Linux kernel (Xilinx ZynqMP) vulnerabilitiesubuntu
- unknownMultiple vulnerabilities in SUSE Linux kernel (July 10, 2026)cert-fr-avis
- unknownMultiple vulnerabilities in Red Hat Linux kernel (July 10, 2026)cert-fr-avis
- unknownMultiple vulnerabilities in Red Hat Linux kernel (July 3, 2026)cert-fr-avis
- unknownMultiple vulnerabilities in SUSE Linux kernel (July 3, 2026)cert-fr-avis
- unknownRedHat Linux Kernel Multiple Vulnerabilitieshkcert
- unknownMultiple vulnerabilities in the Red Hat Linux kernel (June 26, 2026)cert-fr-avis
- unknownMultiple vulnerabilities in the SUSE Linux kernel (June 26, 2026)cert-fr-avis
- unknownMultiple vulnerabilities in the Ubuntu Linux kernel (June 26, 2026)cert-fr-avis
- criticalexploitedImpact of Linux Kernel vulnerabilities on B&R productscisa
Recent advisories for Linux Kernel
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.
- unknownCVE-2026-53363: In the Linux kernel, the following vulnerability has been resolved: xfrm: iptfs: preserve shar…nvd · 2026-07-10
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow denial of servicecert-bund · 2026-07-10
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow denial of servicecert-bund · 2026-07-10
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow unspecified attackcert-bund · 2026-07-10
- high[UPDATE] [high] Linux Kernel: Multiple vulnerabilitiescert-bund · 2026-07-10
- high[UPDATE] [high] Linux Kernel: Multiple vulnerabilitiescert-bund · 2026-07-10
More from CERT-Bund (BSI) Security Advisories
- medium[NEW] [medium] DENX U-Boot: Multiple vulnerabilities allow execution of arbitrary code and DoS2026-07-10
- medium[NEW] [medium] Samsung Android: Multiple vulnerabilities2026-07-10
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow denial of service2026-07-10
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow unspecified attack2026-07-10
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow denial of service2026-07-10