[UPDATE] [high] Linux Kernel: Multiple vulnerabilities
A local attacker can exploit multiple vulnerabilities in the Linux Kernel to execute arbitrary code, gain privileged access, steal sensitive information, or render affected systems inoperable.
CSIRTS triage
- What
- Multiple vulnerabilities can be exploited to execute arbitrary code, gain privileged access, steal sensitive information, or render systems inoperable.
- Who is affected
- Deployments of the Linux Kernel.
- Urgency
- Remediation is high urgency due to the severe potential impacts of these vulnerabilities.
- Action
- Update to the latest version of the Linux Kernel.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2025-2431
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-2025-400290.21% 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-2025-400300.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 12% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2025-400310.20% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 10% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2025-400320.20% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 10% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2025-400330.20% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 10% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2025-400340.19% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 9% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2025-400350.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 12% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2025-400360.20% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 10% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2025-400370.20% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 10% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2025-400380.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all EPSS-scored CVEs.
Referenced CVEs
+6 more CVEs referenced in this advisory.
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownDSA-6466-1 linux - security updatedebian
- mediumCVE-2025-40064: smc: Fix use-after-free in __pnet_find_base_ndev().msrc
- highCVE-2025-40074: ipv4: start using dst_dev_rcu()msrc
- highCVE-2025-40039: ksmbd: Fix race condition in RPC handle list accessmsrc
- highCVE-2025-40057: ptp: Add a upper bound on max_vclocksmsrc
- highCVE-2025-40065: RISC-V: KVM: Write hgatp register with valid mode bitsmsrc
- highCVE-2025-40075: tcp_metrics: use dst_dev_net_rcu()msrc
- unknownMultiple vulnerabilities in Ubuntu Linux kernel (July 31, 2026)cert-fr-avis
- unknownexploitedSiemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFPcisa
- unknownUSN-8547-2: Linux kernel (Azure FIPS) vulnerabilitiesubuntu
- unknownMultiple vulnerabilities in the Ubuntu Linux kernel (July 17, 2026)cert-fr-avis
- unknownUSN-8547-1: Linux kernel vulnerabilitiesubuntu
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.
- unknownUSN-8659-4: Linux kernel (Oracle) vulnerabilityubuntu · 2026-08-26
- unknownUSN-8666-2: Linux kernel (Azure) vulnerabilitiesubuntu · 2026-08-25
- unknownUSN-8630-5: Linux kernel (Raspberry Pi) vulnerabilitiesubuntu · 2026-08-25
- unknownUSN-8658-3: Linux kernel vulnerabilitiesubuntu · 2026-08-25
- unknownUSN-8643-4: Linux kernel vulnerabilitiesubuntu · 2026-08-25
- unknownUSN-8659-3: Linux kernel (Azure) vulnerabilityubuntu · 2026-08-25
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