Multiple vulnerabilities in Ubuntu Linux kernel (July 31, 2026)
Multiple vulnerabilities have been discovered in Ubuntu Linux kernel. Some of them allow an attacker to cause privilege escalation, data confidentiality breach and data integrity breach.
CSIRTS triage
- What
- Multiple kernel vulnerabilities allowing privilege escalation, data confidentiality breaches, and data integrity breaches.
- Who is affected
- Ubuntu Linux systems running vulnerable kernel versions.
- Urgency
- High; privilege escalation and information disclosure in kernel-level code require urgent patching.
- Action
- Apply Ubuntu kernel security updates via apt upgrade to remediate identified CVEs.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch Ubuntu Linux kernel
Get an email when a new Ubuntu Linux kernel advisory drops — max one per day, one-click unsubscribe.
Details
Original advisory: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0954/
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-2024-273890.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 14% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2024-358650.63% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 47% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2024-368980.23% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 14% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2024-369220.35% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 28% of all EPSS-scored CVEs.
- Moderate exploitation riskCVE-2025-385627.6% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 94% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2023-527370.21% 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-2025-386590.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2025-387100.15% 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-2025-397640.15% 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-2025-400050.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 8% of all EPSS-scored CVEs.
Referenced CVEs
+12 more CVEs referenced in this advisory.
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- high[UPDATE] [high] Linux Kernel: Multiple vulnerabilitiescert-bund
- high[UPDATE] [high] Linux Kernel: Multiple vulnerabilitiescert-bund
- unknownMultiple vulnerabilities in Ubuntu Linux kernel (August 07, 2026)cert-fr-avis
- unknownMultiple vulnerabilities in Red Hat Linux kernel (August 07, 2026)cert-fr-avis
- high[UPDATE] [high] Linux Kernel: Multiple vulnerabilities allow Denial of Servicecert-bund
- mediumCVE-2024-41079: nvmet: always initialize cqe.resultmsrc
- mediumCVE-2024-36922: wifi: iwlwifi: read txq->read_ptr under lockmsrc
- mediumCVE-2022-50073: net: tap: NULL pointer derefence in dev_parse_header_protocol when skb->dev is nullmsrc
- highCVE-2025-37786: net: dsa: free routing table on probe failuremsrc
- mediumCVE-2024-56719: net: stmmac: fix TSO DMA API usage causing oopsmsrc
- mediumCVE-2024-56557: iio: adc: ad7923: Fix buffer overflow for tx_buf and ring_xfermsrc
- mediumCVE-2022-48816: SUNRPC: lock against ->sock changing during sysfs readmsrc
Recent advisories for Ubuntu 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.
- unknownMultiple vulnerabilities in Ubuntu Linux kernel (August 07, 2026)cert-fr-avis · 2026-08-07
- unknownUbuntu Linux Kernel Multiple Vulnerabilitieshkcert · 2026-08-03
- unknownMultiple vulnerabilities in Ubuntu Linux kernel (July 24, 2026)cert-fr-avis · 2026-07-24
- unknownMultiple vulnerabilities in the Ubuntu Linux kernel (July 17, 2026)cert-fr-avis · 2026-07-17
- unknownMultiple vulnerabilities in Ubuntu Linux kernel (July 10, 2026)cert-fr-avis · 2026-07-10
- unknownMultiple vulnerabilities in Ubuntu Linux kernel (July 3, 2026)cert-fr-avis · 2026-07-03
More from CERT-FR Avis de sécurité
- unknownMultiple vulnerabilities in Progress Telerik (August 07, 2026)2026-08-07
- unknownMultiple vulnerabilities in Google Chrome (August 07, 2026)2026-08-07
- unknownMultiple vulnerabilities in Debian Linux kernel (August 07, 2026)2026-08-07
- unknownMultiple vulnerabilities in Red Hat Linux kernel (August 07, 2026)2026-08-07
- unknownMultiple vulnerabilities in Debian LTS Linux kernel (August 07, 2026)2026-08-07