CVE-2026-43035

MEDIUM EPSS 2.4%
Published May 1, 20262mo ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published May 1, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: net: sched: cls_api: fix tc_chain_fill_node to initialize tcm_info to zero to prevent an info-leak When building netlink messages, tc_chain_fill_node() never initializes the tcm_info field of struct tcmsg. Since the allocation is not zeroed, kernel heap memory is leaked to userspace through this 4-byte field. The fix simply zeroes tcm_info alongside the other fields that are already initialized.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
2.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-908

Affected Products 13

VendorProductVersionRange
linuxlinux_kernel*≥4.19  –  <5.10.253
linuxlinux_kernel*≥5.11  –  <5.15.203
linuxlinux_kernel*≥5.16  –  <6.1.168
linuxlinux_kernel*≥6.2  –  <6.6.134
linuxlinux_kernel*≥6.7  –  <6.12.81
linuxlinux_kernel*≥6.13  –  <6.18.22
linuxlinux_kernel*≥6.19  –  <6.19.12
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/1091b3c174441a52fdbb92e2fe00338f9371a91c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4ae5d23f51fb91d7d1140c6f1ba77ab0756054c3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/71a3eda7e850ae844cb8993065f4e410c11a46ce
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/903c3405cfcc7700260e456ab66a5867586c9e69
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/906997ea3766c24fbbf9cc4bf17c047315bbd138
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d6db08484c6cb3d4ad696246f9d288eceba2a078
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e35f5195cd44ff4053fbc5d71ea97681728a0099
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e6e3eb5ee89ac4c163d46429391c889a1bb5e404
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/1091b3c174441a52fdbb92e2fe00338f9371a91c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4ae5d23f51fb91d7d1140c6f1ba77ab0756054c3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/71a3eda7e850ae844cb8993065f4e410c11a46ce
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/903c3405cfcc7700260e456ab66a5867586c9e69
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/906997ea3766c24fbbf9cc4bf17c047315bbd138
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d6db08484c6cb3d4ad696246f9d288eceba2a078
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e35f5195cd44ff4053fbc5d71ea97681728a0099
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e6e3eb5ee89ac4c163d46429391c889a1bb5e404
    Patch