net: sched: act_connmark: initialize struct tc_ife to fix kernel leak (Linux Linux)

CVE-2025-40279
Not available

At a glance

Source
NVD
EPSS
EPSS 0.20 % · percentile 9 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Deferred

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.

References

European references

CERT-FR advisories

Affected products

ProductVersions
Linux · Linuxaffected 22a5dc0e5e3e8fef804230cd73ed7b0afd4c7bae < 218b67c8c8246d47a2a7910eae80abe4861fe2b7 ; affected 22a5dc0e5e3e8fef804230cd73ed7b0afd4c7bae < 73cc56c608c209d3d666cc571293b090a471da70 ; affected 22a5dc0e5e3e8fef804230cd73ed7b0afd4c7bae < 31e4aa93e2e5b5647fc235b0f6ee329646878f9e ; affected 22a5dc0e5e3e8fef804230cd73ed7b0afd4c7bae < 51cb05d4fd632596816ba44e882e84db9fb28a7e ; affected 22a5dc0e5e3e8fef804230cd73ed7b0afd4c7bae < 25837889ec062f2b7618142cd80253dff3da5343 ; affected 22a5dc0e5e3e8fef804230cd73ed7b0afd4c7bae < 62b656e43eaeae445a39cd8021a4f47065af4389
Linux · Linuxaffected 4.0 ; unaffected 0 < 4.0 ; unaffected 5.15.197 ≤ 5.15.* ; unaffected 6.1.159 ≤ 6.1.* ; unaffected 6.6.117 ≤ 6.6.* ; unaffected 6.12.59 ≤ 6.12.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD