CVE-2025-40279
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.
Does this matter?
Not yet scored. NVD analysis is pending; check back once CVSS and EPSS values are published.
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.
- CVSS
- Not yet scored
- EPSS
- 0.20% probability · 9th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS 0.2% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.