PT-2026-37623 · Linux · Linux Kernel

Published 2026-05-06 · Updated 2026-05-09 · CVE-2026-43283

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the ec bhf ethernet driver where the dma free coherent() function in the error path incorrectly uses priv->rx buf.alloc len as the DMA handle. This results in the improper unmapping of the buffer. The correct DMA handle should be priv->rx buf.alloc phys.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2026-43283

Affected Products

Linux Kernel

References · 18

• https://ubuntu.com/security/CVE-2026-43283 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43283 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2026-43283 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43283 · Vendor Advisory
• https://git.kernel.org/stable/c/1b1d3c5d58a80a19d017a409aa2308162bab5bbf · Patch
• https://git.kernel.org/stable/c/ffe68c3766997d82e9ccaf1cdbd47eba269c4aa2 · Patch
• https://git.kernel.org/stable/c/1e300c33ef3cc544c2b9c693778fe9490cfe9184 · Patch
• https://git.kernel.org/stable/c/8320727be7ff704e07c87624efc2a4a75f54b3ce · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-43283 · Vendor Advisory
• https://git.kernel.org/stable/c/0f589ee54fd6d76d3f75e745f7f12c64cbd749e5 · Patch
• https://git.kernel.org/stable/c/accd0599bc8e73b962247c6c6c70ca7aa1f8e8d0 · Patch
• https://git.kernel.org/stable/c/7e54ff938bebb173822b4c38b33fc164c1cabf92 · Patch
• https://git.kernel.org/stable/c/1b1371cd4032ae859838ebc74215f569987bb197 · Patch
• https://cve.org/CVERecord?id=CVE-2026-43283 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43283 · Vendor Advisory