CVE-2025-40279
Last modified
CVE-2025-40279 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: net: sched: act_connmark: initialize struct tc_ife to fix kernel leak In tcf_connmark_dump(), the variable 'opt' was partially initialized using a designatied initializer. While the padding bytes are reamined uninitialized. EPSS estimates a 0.16% chance of exploitation in the next 30 days.
Description
In the Linux kernel, the following vulnerability has been resolved: net: sched: act_connmark: initialize struct tc_ife to fix kernel leak In tcf_connmark_dump(), the variable 'opt' was partially initialized using a designatied initializer. While the padding bytes are reamined uninitialized. nla_put() copies the entire structure into a netlink message, these uninitialized bytes leaked to userspace. Initialize the structure with memset before assigning its fields to ensure all members and padding are cleared prior to beign copied.
Metrics
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 22a5dc0e5e3e8fef804230cd73ed7b0afd4c7bae, < 218b67c8c8246d47a2a7910eae80abe4861fe2b7; >= 22a5dc0e5e3e8fef804230cd73ed7b0afd4c7bae, < 73cc56c608c209d3d666cc571293b090a471da70; >= 22a5dc0e5e3e8fef804230cd73ed7b0afd4c7bae, < 31e4aa93e2e5b5647fc235b0f6ee329646878f9e; >= 22a5dc0e5e3e8fef804230cd73ed7b0afd4c7bae, < 51cb05d4fd632596816ba44e882e84db9fb28a7e; >= 22a5dc0e5e3e8fef804230cd73ed7b0afd4c7bae, < 25837889ec062f2b7618142cd80253dff3da5343; >= 22a5dc0e5e3e8fef804230cd73ed7b0afd4c7bae, < 62b656e43eaeae445a39cd8021a4f47065af4389 |
| Linux | Linux | 4.0 |
References
Timeline
- Published
- Last Modified
- Status
- Deferred
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