CVE-2025-38207: Linux kernel · mm: fix uprobe pte be overwritten when expanding vma
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 5.5 Medium.
Data as of 26 Oct 2026, 13:47 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 11% 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:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 4 Jul 2025
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 25.10linux-azure-fdepkg:deb/ubuntu/linux-azure-fde@6.17.0-1017.17?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlinuxpkg:deb/ubuntu/linux@6.8.0-136.136?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlinux-awspkg:deb/ubuntu/linux-aws@6.8.0-1060.63?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlinux-aws-6.14pkg:deb/ubuntu/linux-aws-6.14@6.14.0-1018.18~24.04.1?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure@6.8.0-1062.69?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlinux-azure-6.11pkg:deb/ubuntu/linux-azure-6.11@6.11.0-1018.18~24.04.1?arch=source&distro=nobleOther 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 for this vulnerability has been released as part of the Linux kernel patch series addressing the uprobe pte overwrite issue during vma expansion. Users and administrators should apply the official kernel updates that include this patch to remediate the vulnerability. Since this is not a cloud service, manual patching is required. Patch status is confirmed fixed in the updated kernel versions. No additional mitigation steps beyond applying the patch are indicated.
Description
A vulnerability in the Linux kernel's memory management subsystem involving uprobe page table entries (pte) being overwritten during virtual memory area (vma) expansion has been resolved. The issue occurs when remapping and merging vm areas with uprobe anon pages, leading to orphaned ptes. This bug was identified through Syzkaller fuzzing and affects certain Linux kernel versions. The vulnerability has a medium severity rating with an impact on integrity but no confidentiality or availability impact.
References
- ubuntu.com/security/CVE-2025-38207 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2025-38207 (opens in a new tab)
- git.kernel.org/linus/2b12d06c37fd3a394376f42f026a7478d826ed63 (opens in a new tab)
- git.kernel.org/stable/c/2b12d06c37fd3a394376f42f026a7478d826ed63 (opens in a new tab)
- git.kernel.org/stable/c/58b83b9a9a929611a2a2e7d88f45cb0d786b7ee0 (opens in a new tab)