Usn
USN-8634-1: Linux kernel vulnerabilities
Publication date
12 August 2026
Overview
Several security issues were fixed in the Linux kernel.
Releases
Packages
- linux - Linux kernel
Details
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;
- Cryptographic API;
- InfiniBand drivers;
- Media drivers;
- STMicroelectronics network drivers;
- Network drivers;
- Ext4 file system;
- IPv4 networking;
- TCP network protocol;
- Locking primitives;
- B.A.T.M.A.N. meshing protocol;
- Ceph Core library;
- IPv6 networking;
- Multipath TCP;
- Netfilter;
- SCTP protocol;
- SMC sockets
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;
- Cryptographic API;
- InfiniBand drivers;
- Media drivers;
- STMicroelectronics network drivers;
- Network drivers;
- Ext4 file system;
- IPv4 networking;
- TCP network protocol;
- Locking primitives;
- B.A.T.M.A.N. meshing protocol;
- Ceph Core library;
- IPv6 networking;
- Multipath TCP;
- Netfilter;
- SCTP protocol;
- SMC sockets
Update instructions
After a standard system update you need to reboot your computer to make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 14.04 LTS trusty | linux-image-3.13.0-215-generic – 3.13.0-215.266 | ||
| linux-image-3.13.0-215-lowlatency – 3.13.0-215.266 | |||
| linux-image-generic – 3.13.0.215.225 | |||
| linux-image-generic-lts-trusty – 3.13.0.215.225 | |||
| linux-image-lowlatency – 3.13.0.215.225 | |||
| linux-image-server – 3.13.0.215.225 | |||
| linux-image-virtual – 3.13.0.215.225 |
Reduce your security exposure
Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.
References
- CVE-2026-53359
- CVE-2026-53225
- CVE-2026-53176
- CVE-2026-52986
- CVE-2026-52982
- CVE-2026-52955
- CVE-2026-46266
- CVE-2026-43499
- CVE-2026-43493
- CVE-2026-43198
- CVE-2026-53359
- CVE-2026-53225
- CVE-2026-53176
- CVE-2026-52986
- CVE-2026-52982
- CVE-2026-52955
- CVE-2026-46266
- CVE-2026-43499
- CVE-2026-43493
- CVE-2026-43198
- CVE-2026-31685
- CVE-2026-31659
- CVE-2026-31649
- CVE-2026-31448
- CVE-2026-31414
- CVE-2026-31405
Related notices
- USN-8633-1
- USN-8631-1
- USN-8620-1
- USN-8620-2
- USN-8620-3
- USN-8620-4
- USN-8619-1
- USN-8618-1
- USN-8617-1
- USN-8616-1
- USN-8633-1
- USN-8631-1
- USN-8620-1
- USN-8620-2
- USN-8620-3
- USN-8620-4
- USN-8619-1
- USN-8618-1
- USN-8617-1
- USN-8616-1
- USN-8615-1
- USN-8615-2
- USN-8610-1
- USN-8609-1
- USN-8608-1
- USN-8607-1
- USN-8606-1
- USN-8605-1
- USN-8604-1
- USN-8603-1
- USN-8597-1
- USN-8596-1
- USN-8595-1
- USN-8595-2
- USN-8595-3
- USN-8593-1
- USN-8576-1
- USN-8576-2
- USN-8575-1
- USN-8575-2
- USN-8575-3
- USN-8574-1
- USN-8574-2
- USN-8574-3
- USN-8569-1
- USN-8568-1
- USN-8567-1
- USN-8566-1
- USN-8548-1
- USN-8547-1
- USN-8547-2
- USN-8546-1
- USN-8545-1
- USN-8530-1
- USN-8529-1
- USN-8528-1
- USN-8527-1
- USN-8508-1
- USN-8507-1
- USN-8499-1
- USN-8498-1
- USN-8497-1
- USN-8493-1
- USN-8493-2
- USN-8492-1
- USN-8492-2
- USN-8492-3
- USN-8492-4
- USN-8492-5
- USN-8491-1
- USN-8490-1
- USN-8490-2
- USN-8489-1
- USN-8488-1
- USN-8488-2
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