PT-2026-36449 · Linux · Linux Kernel

Published 2026-03-26 · Updated 2026-05-06 · CVE-2026-43032

Positive Technologies (AI Summary)

CVSS v2.0

7.2

High

Base vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

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

Description In the NFC pn533 component, the pn532 receive buf() function appends incoming bytes to dev->recv skb and only resets the buffer upon recognition of a complete frame by pn532 uart rx is frame(). A continuous stream of bytes lacking a valid PN532 frame header causes the skb to grow until skb put u8() reaches the tail limit.

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

Weakness Enumeration

CWE-1284

Related Identifiers

BDU:2026-06495

CVE-2026-43032

ECHO-B271-C8D1-8E1E

Affected Products

Linux Kernel

References · 21

• https://git.kernel.org/stable/c/2c1fadd221b21d8038acfe6a0f56291881d5ff76 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-43032 · Security Note
• https://git.kernel.org/stable/c/30fe3f5f6494f827d812ff179f295a8e532709d6 · Patch
• https://git.kernel.org/stable/c/ad2f60de5045bfb5d20ea468a97c8760c6a3a4f8 · Patch
• https://git.kernel.org/stable/c/f48ab6ee654ecc350434e4566bc785773f412b7e · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-43032 · Vendor Advisory
• https://git.kernel.org/stable/c/8bedf1dd5640ac8997bff00bbefe241b438df397 · Patch
• https://git.kernel.org/stable/c/3adca9be14bf36b927193f05f5aea35a1a90e913 · Patch
• https://bdu.fstec.ru/vul/2026-06495 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-43032 · Security Note
• https://git.kernel.org/stable/c/cf2ff10183204349edfd6b972e189375fc5f1fb0 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43032 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43032 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43032 · Vendor Advisory
• https://git.kernel.org/stable/c/23e925183db26cd322597679669ad29d70ed2ada · Patch