CVE-2026-43032NFC: pn533: bound the UART receive buffer
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- May 11, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from c656aa4c27b17a8c70da223ed5ab42145800d6b5 before 8bedf1dd5640ac8997bff00bbefe241b438df397; from c656aa4c27b17a8c70da223ed5ab42145800d6b5 before 23e925183db26cd322597679669ad29d70ed2ada; from c656aa4c27b17a8c70da223ed5ab42145800d6b5 before 3adca9be14bf36b927193f05f5aea35a1a90e913; from c656aa4c27b17a8c70da223ed5ab42145800d6b5 before 2c1fadd221b21d8038acfe6a0f56291881d5ff76; from c656aa4c27b17a8c70da223ed5ab42145800d6b5 before f48ab6ee654ecc350434e4566bc785773f412b7e; from c656aa4c27b17a8c70da223ed5ab42145800d6b5 before ad2f60de5045bfb5d20ea468a97c8760c6a3a4f8; from c656aa4c27b17a8c70da223ed5ab42145800d6b5 before cf2ff10183204349edfd6b972e189375fc5f1fb0; from c656aa4c27b17a8c70da223ed5ab42145800d6b5 before 30fe3f5f6494f827d812ff179f295a8e532709d6 | CNA record |
linux linux_kernel linux:linux_kernel | from 5.5 before 5.10.253; from 5.11 before 5.15.203; from 5.16 before 6.1.168; from 6.2 before 6.6.134; from 6.7 before 6.12.81; from 6.13 before 6.18.22; from 6.19 before 6.19.12; 7.0; and 5 more ranges | NVD |
References
- https://git.kernel.org/stable/c/8bedf1dd5640ac8997bff00bbefe241b438df397patch
- https://git.kernel.org/stable/c/23e925183db26cd322597679669ad29d70ed2adapatch
- https://git.kernel.org/stable/c/3adca9be14bf36b927193f05f5aea35a1a90e913patch
- https://git.kernel.org/stable/c/2c1fadd221b21d8038acfe6a0f56291881d5ff76patch
- https://git.kernel.org/stable/c/f48ab6ee654ecc350434e4566bc785773f412b7epatch
- https://git.kernel.org/stable/c/ad2f60de5045bfb5d20ea468a97c8760c6a3a4f8patch
- https://git.kernel.org/stable/c/cf2ff10183204349edfd6b972e189375fc5f1fb0patch
- https://git.kernel.org/stable/c/30fe3f5f6494f827d812ff179f295a8e532709d6patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.