CVE-2026-43032NFC: pn533: bound the UART receive buffer
- 5.5MediumCVSS base score
- 0.12%Exploitation in 30 daysEPSS · top 98% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
Published
- 10 days later
· 10 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.12% · top 98% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected c656aa4c27b17a8c70da223ed5ab42145800d6b5 – < 8bedf1dd5640ac8997bff00bbefe241b438df397
- affected c656aa4c27b17a8c70da223ed5ab42145800d6b5 – < 23e925183db26cd322597679669ad29d70ed2ada
- affected c656aa4c27b17a8c70da223ed5ab42145800d6b5 – < 3adca9be14bf36b927193f05f5aea35a1a90e913
- affected c656aa4c27b17a8c70da223ed5ab42145800d6b5 – < 2c1fadd221b21d8038acfe6a0f56291881d5ff76
- affected c656aa4c27b17a8c70da223ed5ab42145800d6b5 – < f48ab6ee654ecc350434e4566bc785773f412b7e
- affected c656aa4c27b17a8c70da223ed5ab42145800d6b5 – < ad2f60de5045bfb5d20ea468a97c8760c6a3a4f8
- affected c656aa4c27b17a8c70da223ed5ab42145800d6b5 – < cf2ff10183204349edfd6b972e189375fc5f1fb0
- affected c656aa4c27b17a8c70da223ed5ab42145800d6b5 – < 30fe3f5f6494f827d812ff179f295a8e532709d6
- affected 5.5
- unaffected < 5.5
- unaffected 5.10.253 – ≤ 5.10.*
- unaffected 5.15.203 – ≤ 5.15.*
- unaffected 6.1.168 – ≤ 6.1.*
- unaffected 6.6.134 – ≤ 6.6.*
- unaffected 6.12.81 – ≤ 6.12.*
- unaffected 6.18.22 – ≤ 6.18.*
- unaffected 6.19.12 – ≤ 6.19.*
- unaffected 7.0 – ≤ *
References
References8
- https://git.kernel.org/stable/c/8bedf1dd5640ac8997bff00bbefe241b438df397 (opens in a new tab)
- https://git.kernel.org/stable/c/23e925183db26cd322597679669ad29d70ed2ada (opens in a new tab)
- https://git.kernel.org/stable/c/3adca9be14bf36b927193f05f5aea35a1a90e913 (opens in a new tab)
- https://git.kernel.org/stable/c/2c1fadd221b21d8038acfe6a0f56291881d5ff76 (opens in a new tab)
- https://git.kernel.org/stable/c/f48ab6ee654ecc350434e4566bc785773f412b7e (opens in a new tab)
- https://git.kernel.org/stable/c/ad2f60de5045bfb5d20ea468a97c8760c6a3a4f8 (opens in a new tab)
- https://git.kernel.org/stable/c/cf2ff10183204349edfd6b972e189375fc5f1fb0 (opens in a new tab)
- https://git.kernel.org/stable/c/30fe3f5f6494f827d812ff179f295a8e532709d6 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-26631 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-43032)Record last updated .