CVE-2026-53055

highcovered by 10 sourcesfirst seen 2026-07-20

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Hardware crypto device drivers; - NVIDIA Tegra memory controller driver; - Network drivers; - GFS2 file system; - OCFS2 file system; - SMB network file system; - B.A.T.M.A.N. meshing protocol; - Ceph Core library; - IPv4 networking; - IPv6 networking; - Netfilter; - Open vSwitch; - RxRPC session sockets; - SCTP protocol; - TIPC protocol; (CVE-2026-52914, CVE-2026-52931, CVE-2026-52955, CVE-2026-52958, CVE-2026-52982, CVE-2026-52986, CVE-2026-52993, CVE-2026-52999, CVE-2026-53002, CVE-2026-53006, CVE-2026-53010, CVE-2026-53043, CVE-2026-53045, CVE-2026-53046, CVE-2026-53049, CVE-2026-53055, CVE-2026-53088, CVE-2026-53151, CVE-2026-53175, CVE-2026-53215, CVE-2026-53216, CVE-2026-53224, CVE-2026-53246, CVE-2026-53247, CVE-2026-53260, CVE-2026-53309, CVE-2026-64531)

CSIRTS triage

What: Multiple kernel vulnerabilities across architectures and driver subsystems including AMD processor microarchitectural flaws and cache isolation issues.
Who is affected: NVIDIA BaseOS systems running affected Linux kernel versions.
Urgency: Moderate; privilege escalation and DoS vectors present, primarily requiring local access.
Action: Apply USN-8664-1 kernel security update for NVIDIA BaseOS.

AI-assisted analysis generated from the source advisory — verify against the original.

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Exploitation outlook

Low exploitation risk0.43% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 36% of all EPSS-scored CVEs.

Advisory coverage (10)

unknownUSN-8748-1: Linux kernel (NVIDIA) vulnerabilitiesubuntu · 2026-09-10
unknownexploitedUSN-8728-1: Linux kernel (GCP) vulnerabilitiesubuntu · 2026-09-07
unknownUSN-8664-1: Linux kernel (NVIDIA BaseOS) vulnerabilitiesubuntu · 2026-08-20
unknownUSN-8663-1: Linux kernel (NVIDIA) vulnerabilitiesubuntu · 2026-08-20
highUSN-8618-1: Linux kernel vulnerabilitiesubuntu · 2026-07-28
highUSN-8603-1: Linux kernel (Azure) vulnerabilitiesubuntu · 2026-07-24
highUSN-8593-1: Linux kernel vulnerabilitiesubuntu · 2026-07-23
highUSN-8569-1: Linux kernel (HWE) vulnerabilitiesubuntu · 2026-07-20
highUSN-8568-1: Linux kernel (OEM) vulnerabilitiesubuntu · 2026-07-20
highUSN-8566-1: Linux kernel vulnerabilitiesubuntu · 2026-07-20

External references

NVD record for CVE-2026-53055

CVE.org record

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