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USN-8631-1 Not scored

linux, linux-aws, linux-aws-fips, linux-azure, linux-azure-fde, linux-azure-fips, linux-gkeop, linux-ibm, linux-ibm-5.15, linux-intel-iot-realtime, linux-intel-iotg, linux-intel-iotg-5.15, linux-kvm, linux-nvidia, linux-nvidia-tegra, linux-nvidia-tegra-5.15, linux-oracle-5.15, linux-realtime, linux-xilinx-zynqmp vulnerabilities

Siebe Devroe, Héloïse Gollier, and Mathy Vanhoef discovered that the WiFi implementation in the Linux kernel did not properly handle aggregated frames in mesh networks, due to an incorrect fix for CVE-2020-24588. A physically proximate attacker could use this issue to inject packets. (CVE-2025-27558) 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: - x86 architecture; - InfiniBand drivers; - Network drivers; - NVME drivers; - Ext4 file system; - SMB network file system; - IPv4 networking; - Network traffic control; - TCP network protocol; - Locking primitives; - IPv6 networking; - Multipath TCP; - Netfilter; - SCTP protocol; - SMC sockets; (CVE-2026-31414, CVE-2026-31448, CVE-2026-31705, CVE-2026-43198, CVE-2026-43378, CVE-2026-43499, CVE-2026-46266, CVE-2026-46331, CVE-2026-52924, CVE-2026-52989, CVE-2026-53086, CVE-2026-53176, CVE-2026-53212, CVE-2026-53215, CVE-2026-53225, CVE-2026-53228, CVE-2026-53359)

Exploit probability Not scored
Published August 12, 2026
Required by Not available
Last source change August 13, 2026

02 / AFFECTED SOFTWARE

Affected packages

Ubuntu:22.04:LTS linux-gkeop

83 explicit affected versions

Ubuntu:22.04:LTS linux

98 explicit affected versions

Ubuntu:22.04:LTS linux-aws

90 explicit affected versions

Ubuntu:22.04:LTS linux-azure

85 explicit affected versions

Ubuntu:22.04:LTS linux-azure-fde

63 explicit affected versions

Ubuntu:22.04:LTS linux-ibm

88 explicit affected versions

Ubuntu:22.04:LTS linux-intel-iotg

78 explicit affected versions

Ubuntu:22.04:LTS linux-kvm

89 explicit affected versions

Ubuntu:22.04:LTS linux-nvidia

75 explicit affected versions

Ubuntu:22.04:LTS linux-nvidia-tegra

48 explicit affected versions

Ubuntu:22.04:LTS linux-xilinx-zynqmp

35 explicit affected versions

Ubuntu:Pro:20.04:LTS linux-ibm-5.15

59 explicit affected versions

Ubuntu:Pro:20.04:LTS linux-intel-iotg-5.15

67 explicit affected versions

Ubuntu:Pro:20.04:LTS linux-nvidia-tegra-5.15

37 explicit affected versions

Ubuntu:Pro:20.04:LTS linux-oracle-5.15

78 explicit affected versions

Ubuntu:Pro:FIPS-updates:22.04:LTS linux-aws-fips

53 explicit affected versions

Ubuntu:Pro:FIPS-updates:22.04:LTS linux-azure-fips

41 explicit affected versions

Ubuntu:Pro:Realtime:22.04:LTS linux-intel-iot-realtime

66 explicit affected versions

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

89 explicit affected versions

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities USN-8631-1

Siebe Devroe, Héloïse Gollier, and Mathy Vanhoef discovered that the WiFi implementation in the Linux kernel did not properly handle aggregated frames in mesh networks, due to an incorrect fix for CVE-2020-24588. A physically proximate attacker could use this issue to inject packets. (CVE-2025-27558) 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: - x86 architecture; - InfiniBand drivers; - Network drivers; - NVME drivers; - Ext4 file system; - SMB network file system; - IPv4 networking; - Network traffic control; - TCP network protocol; - Locking primitives; - IPv6 networking; - Multipath TCP; - Netfilter; - SCTP protocol; - SMC sockets; (CVE-2026-31414, CVE-2026-31448, CVE-2026-31705, CVE-2026-43198, CVE-2026-43378, CVE-2026-43499, CVE-2026-46266, CVE-2026-46331, CVE-2026-52924, CVE-2026-52989, CVE-2026-53086, CVE-2026-53176, CVE-2026-53212, CVE-2026-53215, CVE-2026-53225, CVE-2026-53228, CVE-2026-53359)

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05 / REFERENCES

Further evidence