Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.5, < 5.10.253 |
References
- https://git.kernel.org/stable/c/23e925183db26cd322597679669ad29d70ed2adaPatch
- https://git.kernel.org/stable/c/2c1fadd221b21d8038acfe6a0f56291881d5ff76Patch
- https://git.kernel.org/stable/c/30fe3f5f6494f827d812ff179f295a8e532709d6Patch
- https://git.kernel.org/stable/c/3adca9be14bf36b927193f05f5aea35a1a90e913Patch
- https://git.kernel.org/stable/c/8bedf1dd5640ac8997bff00bbefe241b438df397Patch
- https://git.kernel.org/stable/c/ad2f60de5045bfb5d20ea468a97c8760c6a3a4f8Patch
- https://git.kernel.org/stable/c/cf2ff10183204349edfd6b972e189375fc5f1fb0Patch
- https://git.kernel.org/stable/c/f48ab6ee654ecc350434e4566bc785773f412b7ePatch
FAQ
What is CVE-2026-43032?
CVE-2026-43032 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 buf...
How severe is CVE-2026-43032?
CVE-2026-43032 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-43032?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.