Riskcovery

CVE-2026-43032

NFC: pn533: bound the UART receive buffer

State
Published
Severity
Not scored
Published
May 1, 2026
Updated
May 11, 2026
Reserved
May 1, 2026

Read the record on cve.org

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • c656aa4c27b17a8c70da223ed5ab42145800d6b5 to before 8bedf1dd5640ac8997bff00bbefe241b438df397Affected
  • c656aa4c27b17a8c70da223ed5ab42145800d6b5 to before 23e925183db26cd322597679669ad29d70ed2adaAffected
  • c656aa4c27b17a8c70da223ed5ab42145800d6b5 to before 3adca9be14bf36b927193f05f5aea35a1a90e913Affected
  • c656aa4c27b17a8c70da223ed5ab42145800d6b5 to before 2c1fadd221b21d8038acfe6a0f56291881d5ff76Affected
  • c656aa4c27b17a8c70da223ed5ab42145800d6b5 to before f48ab6ee654ecc350434e4566bc785773f412b7eAffected
  • c656aa4c27b17a8c70da223ed5ab42145800d6b5 to before ad2f60de5045bfb5d20ea468a97c8760c6a3a4f8Affected
  • c656aa4c27b17a8c70da223ed5ab42145800d6b5 to before cf2ff10183204349edfd6b972e189375fc5f1fb0Affected
  • c656aa4c27b17a8c70da223ed5ab42145800d6b5 to before 30fe3f5f6494f827d812ff179f295a8e532709d6Affected
LinuxLinux
  • 5.5Affected
  • before 5.5Not affected
  • 5.10.253 through 5.10.*Not affected
  • 5.15.203 through 5.15.*Not affected
  • 6.1.168 through 6.1.*Not affected
  • 6.6.134 through 6.6.*Not affected
  • 6.12.81 through 6.12.*Not affected
  • 6.18.22 through 6.18.*Not affected
  • 6.19.12 through 6.19.*Not affected
  • 7.0 and laterNot affected

References

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