CVE-2026-100076: Linux kernel · Memory Leak
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 5.5 Medium.
Data as of 26 Oct 2026, 14:05 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 25 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther 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 fix is available that properly frees leaked management transmit frames and buffers on error paths in the rtl8723bs driver. Users should apply the updated linux-azure kernel versions that include this patch. No additional mitigation is required beyond applying the fix.
Description
A memory leak vulnerability in the Linux kernel's rtl8723bs driver staging area has been resolved. The issue involves management transmit frame and buffer leaks on certain error paths in functions handling beacon, probe response, and association response frames. These leaks cause progressive exhaustion of management-TX pools, eventually preventing the interface from sending necessary management frames. The vulnerability has a medium severity rating with a CVSS score of 5.5 and affects specific linux-azure kernel versions.
References
- ubuntu.com/security/CVE-2026-100076 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-100076 (opens in a new tab)
- git.kernel.org/stable/c/6c9f6a3b9fdd31a0836b681053155b5997c0156e (opens in a new tab)
- git.kernel.org/stable/c/41b8209376dffbd7b0b85c8bc4697d9166ac62ef (opens in a new tab)
- git.kernel.org/stable/c/c48e5aa01525577d6b6e782962a5bfb0e1535cb5 (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-100076 (opens in a new tab)