Linux kernel · linux-aws, linux-aws-fips, linux-azure, linux-azure-fde, linux-azure-fips, linux-gcp, linux-gcp-fips, linux-gke
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 9.1 Critical · fixed in 5.15.0-194.204~20.04.1 : patch Linux kernel as a priority.
Data as of 6 Nov 2026, 14:52 UTC
- Patch
- Available – fixed in 5.15.0-194.204~20.04.1, 5.15.0-1116.123, 5.15.0-1122.131 +15
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 9 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Patches and advisories
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 22.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=jammyOther threats | Affected
| Fixed in
|
Ubuntu 22.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=jammyOther threats | Affected
| Fixed in
|
Ubuntu 22.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=jammyOther threats | Affected
| Fixed in
|
Ubuntu 22.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=jammyOther threats | Affected
| Fixed in
|
Ubuntu 22.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=jammyOther threats | Affected
| Fixed in
|
Ubuntu 22.04 LTSlinux-gkeoppkg:deb/ubuntu/linux-gkeop?arch=source&distro=jammyOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A security update fixing these vulnerabilities is available and should be applied promptly. Ubuntu has released patched Linux kernel packages for various distributions and cloud environments as detailed in advisory USN-8818-1. After updating, a system reboot is required to apply the fixes. Due to ABI changes, third-party kernel modules must be recompiled and reinstalled. Users should follow the vendor's update instructions carefully.
Description
Multiple security vulnerabilities were discovered in the Linux kernel, including a critical issue affecting some Arm processors where a broadcast TLB invalidation could complete before memory writes were globally observed. This flaw could allow a local attacker to write to memory after permissions were revoked, potentially bypassing memory protections or escalating privileges. Additional flaws affect various subsystems such as InfiniBand drivers, network drivers, exFAT file system, NFS client and server, and several networking protocols. These issues were addressed in updated Linux kernel packages for Ubuntu 20.04 LTS and 22.04 LTS.
References
- ubuntu.com/security/notices/USN-8818-1 (opens in a new tab)
- ubuntu.com/security/CVE-2025-10263 (opens in a new tab)
- ubuntu.com/security/CVE-2026-53186 (opens in a new tab)
- ubuntu.com/security/CVE-2026-53216 (opens in a new tab)
- ubuntu.com/security/CVE-2026-53221 (opens in a new tab)
- ubuntu.com/security/CVE-2026-53354 (opens in a new tab)
- ubuntu.com/security/CVE-2026-53355 (opens in a new tab)
- ubuntu.com/security/CVE-2026-53398 (opens in a new tab)
- ubuntu.com/security/CVE-2026-63800 (opens in a new tab)
- ubuntu.com/security/CVE-2026-63808 (opens in a new tab)
- ubuntu.com/security/CVE-2026-63887 (opens in a new tab)
- ubuntu.com/security/CVE-2026-63888 (opens in a new tab)
- ubuntu.com/security/CVE-2026-63912 (opens in a new tab)
- ubuntu.com/security/CVE-2026-63922 (opens in a new tab)
- ubuntu.com/security/CVE-2026-63924 (opens in a new tab)
- ubuntu.com/security/CVE-2026-63984 (opens in a new tab)
- ubuntu.com/security/CVE-2026-63992 (opens in a new tab)
- ubuntu.com/security/CVE-2026-63993 (opens in a new tab)
- ubuntu.com/security/CVE-2026-63994 (opens in a new tab)
- ubuntu.com/security/CVE-2026-64007 (opens in a new tab)