Linux: Incomplete Cleanup
CVE-2025-37908 is a high-severity incomplete cleanup vulnerability in Linux, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. The record lists versions dab2a13059a475b6392550f882276e170fe2fcff, 01db0e1a48345aa1937f3bdfc7c7108d03ebcf7e, be8250786ca94952a19ce87f98ad9906448bc9ef as the first without the flaw, so updating Linux to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.21% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Linux to dab2a13059a475b6392550f882276e170fe2fcff or 01db0e1a48345aa1937f3bdfc7c7108d03ebcf7e or be8250786ca94952a19ce87f98ad9906448bc9ef, whichever matches your release line, or a later version.
- Update Linux Kernel to 6.12.28 or 6.14.6, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | 21c690a349baab895dc68ab70d291e1598d7109d up to, but not including, dab2a13059a475b6392550f882276e170fe2fcff; 21c690a349baab895dc68ab70d291e1598d7109d up to, but not including, 01db0e1a48345aa1937f3bdfc7c7108d03ebcf7e; 21c690a349baab895dc68ab70d291e1598d7109d up to, but not including, be8250786ca94952a19ce87f98ad9906448bc9ef; 6.10 | dab2a13059a475b6392550f882276e170fe2fcff, 01db0e1a48345aa1937f3bdfc7c7108d03ebcf7e, be8250786ca94952a19ce87f98ad9906448bc9ef |
| Linux | Linux Kernel | 6.10 up to, but not including, 6.12.28; 6.13 up to, but not including, 6.14.6; 6.15 | 6.12.28, 6.14.6 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.8 | High | CNA |
| CVSS 3.1 | 7.8 | High | NVD |
Official description
In the Linux kernel, the following vulnerability has been resolved: mm, slab: clean up slab->obj_exts always When memory allocation profiling is disabled at runtime or due to an error, shutdown_mem_profiling() is called: slab->obj_exts which previously allocated remains. It won't be cleared by unaccount_slab() because of mem_alloc_profiling_enabled() not true. It's incorrect, slab->obj_exts should always be cleaned up in unaccount_slab() to avoid following error: [...]BUG: Bad page state in process... .. [...]page dumped because: page still charged to cgroup [[email protected]: fold need_slab_obj_ext() into its only user]
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Incomplete Cleanup
The product does not properly clean up and remove temporary or supporting resources after they have been used.
How developers prevent this class of flaw
- Temporary files and other supporting resources should be deleted/released immediately after they are no longer needed.
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
Recent Incomplete Cleanup vulnerabilities
- 7.5 High severity
- 7.5 High severity
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- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
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