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USN-8643-1 Not scored

linux, linux-aws, linux-aws-fips, linux-azure, linux-fips, linux-gcp, linux-gcp-6.8, linux-gcp-fips, linux-gkeop, linux-oracle, linux-realtime, linux-realtime-6.8, linux-xilinx vulnerabilities

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: - Network drivers; - Open vSwitch; - SCTP protocol; (CVE-2026-53224, CVE-2026-53246, CVE-2026-53247, CVE-2026-64531)

Exploit probability Not scored
Published August 18, 2026
Required by Not available
Last source change August 19, 2026

02 / AFFECTED SOFTWARE

Affected packages

Ubuntu:22.04:LTS linux-gcp-6.8

42 explicit affected versions

Ubuntu:24.04:LTS linux

54 explicit affected versions

Ubuntu:24.04:LTS linux-aws

50 explicit affected versions

Ubuntu:24.04:LTS linux-azure

41 explicit affected versions

Ubuntu:24.04:LTS linux-gcp

52 explicit affected versions

Ubuntu:24.04:LTS linux-gkeop

36 explicit affected versions

Ubuntu:24.04:LTS linux-oracle

47 explicit affected versions

Ubuntu:24.04:LTS linux-xilinx

20 explicit affected versions

Ubuntu:Pro:FIPS-updates:24.04:LTS linux-aws-fips

21 explicit affected versions

Ubuntu:Pro:FIPS-updates:24.04:LTS linux-fips

22 explicit affected versions

Ubuntu:Pro:FIPS-updates:24.04:LTS linux-gcp-fips

21 explicit affected versions

Ubuntu:Pro:Realtime:22.04:LTS linux-realtime-6.8

43 explicit affected versions

Ubuntu:Pro:Realtime:24.04:LTS linux-realtime

48 explicit affected versions

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities USN-8643-1

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: - Network drivers; - Open vSwitch; - SCTP protocol; (CVE-2026-53224, CVE-2026-53246, CVE-2026-53247, CVE-2026-64531)

View original source

05 / REFERENCES

Further evidence