CVE-2026-43093

HIGH EPSS 2.9%
Published May 6, 20261mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published May 6, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: xsk: tighten UMEM headroom validation to account for tailroom and min frame The current headroom validation in xdp_umem_reg() could leave us with insufficient space dedicated to even receive minimum-sized ethernet frame. Furthermore if multi-buffer would come to play then skb_shared_info stored at the end of XSK frame would be corrupted. HW typically works with 128-aligned sizes so let us provide this value as bare minimum. Multi-buffer setting is known later in the configuration process so besides accounting for 128 bytes, let us also take care of tailroom space upfront.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
2.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 21

VendorProductVersionRange
linuxlinux_kernel*≥4.19.118  –  <4.20
linuxlinux_kernel*≥5.4.35  –  <5.5
linuxlinux_kernel*≥5.6.7  –  <5.7
linuxlinux_kernel*≥5.7.1  –  <6.6.136
linuxlinux_kernel*≥6.7  –  <6.12.83
linuxlinux_kernel*≥6.13  –  <6.18.24
linuxlinux_kernel*≥6.19  –  <6.19.14
linuxlinux_kernel5.7any
linuxlinux_kernel5.7any
linuxlinux_kernel5.7any
linuxlinux_kernel5.7any
linuxlinux_kernel5.7any
linuxlinux_kernel5.7any
linuxlinux_kernel5.7any
linuxlinux_kernel7.0any
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/0ec4d3f6e6934deb843b561ae048cd17218e5ad1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/1a6051cd7e3e4c54ff3854a43b638b9292af5e67
  • git.kernel.org https://git.kernel.org/stable/c/5f123bc278bf4e3283d8606321bebbfd299f4384
  • git.kernel.org https://git.kernel.org/stable/c/6523bc1b40e69301f24c14338b762af4739d6d39
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8769708add9eadeea8041a9761771bb715a87104
  • git.kernel.org https://git.kernel.org/stable/c/9ea6ba4f3195dcba6e8b3e7b2e748593b7cafb12
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a03975beb9f6af0d8ac051e30b2abeabe618414f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a315e022a72d95ef5f1d4e58e903cb492b0ad931
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0ec4d3f6e6934deb843b561ae048cd17218e5ad1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6523bc1b40e69301f24c14338b762af4739d6d39
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9ea6ba4f3195dcba6e8b3e7b2e748593b7cafb12
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a03975beb9f6af0d8ac051e30b2abeabe618414f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a315e022a72d95ef5f1d4e58e903cb492b0ad931
    Patch