CVE-2023-53673
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.
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Exploitation outlook
- Low exploitation risk0.23% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all EPSS-scored CVEs.
Advisory coverage (7)
- unknownMultiple vulnerabilities in Ubuntu Linux kernel (July 31, 2026)cert-fr-avis · 2026-07-31
- unknownUSN-8547-2: Linux kernel (Azure FIPS) vulnerabilitiesubuntu · 2026-07-28
- unknownMultiple vulnerabilities in the Ubuntu Linux kernel (July 17, 2026)cert-fr-avis · 2026-07-17
- unknownUSN-8547-1: Linux kernel vulnerabilitiesubuntu · 2026-07-15
- unknownexploitedUSN-8528-1: Linux kernel (Xilinx ZynqMP) vulnerabilitiesubuntu · 2026-07-10
- unknownUSN-8527-1: Linux kernel (Raspberry Pi) vulnerabilitiesubuntu · 2026-07-10
- unknownUbuntu Linux Kernel Multiple Vulnerabilitieshkcert · 2026-07-02
External references
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[](https://www.csirts.com/cve/CVE-2023-53673)