PT-2026-61470 · Linux · Linux Kernel

CVE-2026-64153 · Published 2026-07-19 · Updated 2026-07-20

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 drm/msm component where the return value of the iommu map sgtable() function is not correctly handled. Following a change where iommu map sgtable() was updated to return an ssize t (a signed size type) and negative values for error cases instead of a size t (an unsigned size type) and zero, the system fails to store the return value in the appropriate type. This leads to an incorrect error check and triggers a WARN message instead of returning the error code.

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

Related Identifiers

CVE-2026-64153

Affected Products

Linux Kernel

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2026-64153 · Security Note
• https://git.kernel.org/stable/c/3c2cdb7c07f664b77e2a75b50793b845d5742efa · Note
• https://git.kernel.org/stable/c/3e3c3c95ef4fe17231a9149e27bcfc9dae2dd89f · Note
• https://git.kernel.org/stable/c/3a45af37733446e114bf19b0209fe7d8089bdb8b · Note
• https://git.kernel.org/stable/c/55e0f0d1c1a4ee1e46da7da4d443eb3044fb3851 · Note
• https://git.kernel.org/stable/c/3457807aeb88077712f0a7cb65c3ca5120773d75 · Note
• https://git.kernel.org/stable/c/f4e37f3df436c2bdd2621c21f9c72c8f149a221d · Note
• https://git.kernel.org/stable/c/7256e54583aee21e23929e7554278c2f5c1a08b1 · Note
• https://twitter.com/VulmonFeeds/status/2079066359497949625 · Twitter Post