CVE-2026-43032

MediumCVSS 5.5/10Last modified Nov 11, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

NFC: pn533: bound the UART receive buffer

pn532_receive_buf() appends every incoming byte to dev->recv_skb and only resets the buffer after pn532_uart_rx_is_frame() recognizes a complete frame. A continuous stream of bytes without a valid PN532 frame header therefore keeps growing the skb until skb_put_u8() hits the tail limit.

Drop the accumulated partial frame once the fixed receive buffer is full so malformed UART traffic cannot grow the skb past PN532_UART_SKB_BUFF_LEN.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected software

VendorProductVersions
LinuxLinux>= c656aa4c27b17a8c70da223ed5ab42145800d6b5, < 8bedf1dd5640ac8997bff00bbefe241b438df397; >= c656aa4c27b17a8c70da223ed5ab42145800d6b5, < 23e925183db26cd322597679669ad29d70ed2ada; >= c656aa4c27b17a8c70da223ed5ab42145800d6b5, < 3adca9be14bf36b927193f05f5aea35a1a90e913; >= c656aa4c27b17a8c70da223ed5ab42145800d6b5, < 2c1fadd221b21d8038acfe6a0f56291881d5ff76; >= c656aa4c27b17a8c70da223ed5ab42145800d6b5, < f48ab6ee654ecc350434e4566bc785773f412b7e; >= c656aa4c27b17a8c70da223ed5ab42145800d6b5, < ad2f60de5045bfb5d20ea468a97c8760c6a3a4f8; >= c656aa4c27b17a8c70da223ed5ab42145800d6b5, < cf2ff10183204349edfd6b972e189375fc5f1fb0; >= c656aa4c27b17a8c70da223ed5ab42145800d6b5, < 30fe3f5f6494f827d812ff179f295a8e532709d6
LinuxLinux5.5

References

Timeline

Published
May 1, 2026
Last modified
Nov 11, 2026
NVD status
Analyzed

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CVE-2026-43032: Medium severity, CVSS 5.5 | Vulnix