CVE-2025-40279

Dec. 8, 2025, 6:26 p.m.

None
No Score

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.

Product(s) Impacted

Product Versions
linux_kernel
  • *

Weaknesses

Common security weaknesses mapped to this vulnerability.

References

https://git.kernel.org/stable/c/218b67c8c8246d47a2a7910eae80abe4861fe2b7
https://git.kernel.org/stable/c/25837889ec062f2b7618142cd80253dff3da5343
https://git.kernel.org/stable/c/31e4aa93e2e5b5647fc235b0f6ee329646878f9e
https://git.kernel.org/stable/c/51cb05d4fd632596816ba44e882e84db9fb28a7e
https://git.kernel.org/stable/c/62b656e43eaeae445a39cd8021a4f47065af4389
https://git.kernel.org/stable/c/73cc56c608c209d3d666cc571293b090a471da70

Tags

416baaa9-dc9f-4396-8d5f-8c081fb06d67
2025-12-06
CVE-2025-40279

Timeline

Published: Dec. 6, 2025, 10:15 p.m.
Last Modified: Dec. 8, 2025, 6:26 p.m.

Status : Awaiting Analysis

CVE has been marked for Analysis. Normally once in this state the CVE will be analyzed by NVD staff within 24 hours.

More info

Source

416baaa9-dc9f-4396-8d5f-8c081fb06d67

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.