CVE-2026-43198

highCVSS 7covered by 37 sourcesfirst seen 2026-06-26

Multiple vulnerabilities have been discovered in Ubuntu Linux kernel. Some of them allow an attacker to cause privilege escalation, breach of data confidentiality and breach of data integrity.

CSIRTS triage

What: Multiple kernel vulnerabilities enable privilege escalation and breach of data confidentiality and integrity.
Who is affected: Ubuntu Linux kernel users running affected versions.
Urgency: Unknown severity but privilege escalation impact is critical; apply updates promptly.
Action: Install the latest Ubuntu Linux kernel security update (August 21, 2026).

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

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Exploitation outlook

Low exploitation risk0.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 22% of all EPSS-scored CVEs.

Advisory coverage (37)

unknownUSN-8666-2: Linux kernel (Azure) vulnerabilitiesubuntu · 2026-08-25
unknownUSN-8630-5: Linux kernel (Raspberry Pi) vulnerabilitiesubuntu · 2026-08-25
lowUSN-8661-2: Linux kernel (Low Latency) vulnerabilitiesubuntu · 2026-08-21
unknownUSN-8669-1: Linux kernel (NVIDIA) vulnerabilitiesubuntu · 2026-08-21
unknownUSN-8667-1: Linux kernel (KVM) vulnerabilitiesubuntu · 2026-08-21
unknownUSN-8662-2: Linux kernel (FIPS) vulnerabilitiesubuntu · 2026-08-21
unknownMultiple vulnerabilities in Ubuntu Linux kernel (August 21, 2026)cert-fr-avis · 2026-08-21
unknownUSN-8666-1: Linux kernel vulnerabilitiesubuntu · 2026-08-20
unknownUSN-8630-4: Linux kernel (AWS) vulnerabilitiesubuntu · 2026-08-20
unknownUSN-8662-1: Linux kernel vulnerabilitiesubuntu · 2026-08-20
unknownUSN-8661-1: Linux kernel vulnerabilitiesubuntu · 2026-08-20
unknownUSN-8630-3: Linux kernel (Oracle) vulnerabilitiesubuntu · 2026-08-18
unknownUSN-8636-2: Linux kernel (Oracle) vulnerabilitiesubuntu · 2026-08-18
unknownUSN-8645-1: Linux kernel (Oracle) vulnerabilitiesubuntu · 2026-08-18
unknownUSN-8631-4: Linux kernel (Azure CVM) vulnerabilitiesubuntu · 2026-08-17
unknownMultiple vulnerabilities in Ubuntu Linux kernel (August 14, 2026)cert-fr-avis · 2026-08-14
unknownUSN-8631-3: Linux kernel (NVIDIA Tegra IGX) vulnerabilitiesubuntu · 2026-08-13
unknownUSN-8633-2: Linux kernel vulnerabilitiesubuntu · 2026-08-13
unknownUSN-8631-2: Linux kernel (Oracle) vulnerabilitiesubuntu · 2026-08-13
unknownUSN-8630-2: Linux kernel vulnerabilitiesubuntu · 2026-08-13
unknownUSN-8636-1: Linux kernel vulnerabilitiesubuntu · 2026-08-12
unknownUSN-8635-1: Linux kernel (Azure) vulnerabilitiesubuntu · 2026-08-12
unknownUSN-8634-1: Linux kernel vulnerabilitiesubuntu · 2026-08-12
unknownUSN-8633-1: Linux kernel vulnerabilitiesubuntu · 2026-08-12
unknownUSN-8631-1: Linux kernel vulnerabilitiesubuntu · 2026-08-12
unknownUSN-8630-1: Linux kernel vulnerabilitiesubuntu · 2026-08-12
highCVE-2026-43198: tcp: fix potential race in tcp_v6_syn_recv_sock()msrc · 2026-08-06
unknownMultiple vulnerabilities in SUSE Linux kernel (July 31, 2026)cert-fr-avis · 2026-07-31
unknownMultiple vulnerabilities in Red Hat Linux kernel (July 24, 2026)cert-fr-avis · 2026-07-24
unknownMultiple vulnerabilities in SUSE Linux kernel (July 24, 2026)cert-fr-avis · 2026-07-24
unknownMultiple vulnerabilities in the SUSE Linux kernel (July 17, 2026)cert-fr-avis · 2026-07-17
unknownMultiple vulnerabilities in SUSE Linux kernel (July 10, 2026)cert-fr-avis · 2026-07-10
unknownMultiple vulnerabilities in Red Hat Linux kernel (July 10, 2026)cert-fr-avis · 2026-07-10
unknownMultiple vulnerabilities in Red Hat Linux kernel (July 3, 2026)cert-fr-avis · 2026-07-03
unknownMultiple vulnerabilities in SUSE Linux kernel (July 3, 2026)cert-fr-avis · 2026-07-03
unknownMultiple vulnerabilities in the Red Hat Linux kernel (June 26, 2026)cert-fr-avis · 2026-06-26
unknownMultiple vulnerabilities in the SUSE Linux kernel (June 26, 2026)cert-fr-avis · 2026-06-26

External references

NVD record for CVE-2026-43198

CVE.org record

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