CVE-2026-43032
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of service disruption.
- Exploit odds
- 0.1% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.1% in the next 30 days (EPSS).
- Severity: 5.5 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.1% · EPSS, next 30 days
- Record status
- Analyzed
Affected
- Linux Kernel < 5.10.253
- Linux Kernel < 5.15.203
- Linux Kernel < 6.1.168
- Linux Kernel < 6.6.134
- Linux Kernel < 6.12.81
- Linux Kernel < 6.18.22
- Linux Kernel < 6.19.12
- Linux Kernel 7.0
Attack profile CVSS 3.1 · 5.5
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-43032.md and follow it. Check whether this project is affected by CVE-2026-43032. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/23e925183db26cd322597679669ad29d70ed2ada
- https://git.kernel.org/stable/c/2c1fadd221b21d8038acfe6a0f56291881d5ff76
- https://git.kernel.org/stable/c/30fe3f5f6494f827d812ff179f295a8e532709d6
- https://git.kernel.org/stable/c/3adca9be14bf36b927193f05f5aea35a1a90e913
- https://git.kernel.org/stable/c/8bedf1dd5640ac8997bff00bbefe241b438df397
- https://git.kernel.org/stable/c/ad2f60de5045bfb5d20ea468a97c8760c6a3a4f8
- https://git.kernel.org/stable/c/cf2ff10183204349edfd6b972e189375fc5f1fb0
- https://git.kernel.org/stable/c/f48ab6ee654ecc350434e4566bc785773f412b7e
References
- https://git.kernel.org/stable/c/23e925183db26cd322597679669ad29d70ed2ada
- https://git.kernel.org/stable/c/2c1fadd221b21d8038acfe6a0f56291881d5ff76
- https://git.kernel.org/stable/c/30fe3f5f6494f827d812ff179f295a8e532709d6
- https://git.kernel.org/stable/c/3adca9be14bf36b927193f05f5aea35a1a90e913
- https://git.kernel.org/stable/c/8bedf1dd5640ac8997bff00bbefe241b438df397
- https://git.kernel.org/stable/c/ad2f60de5045bfb5d20ea468a97c8760c6a3a4f8
- https://git.kernel.org/stable/c/cf2ff10183204349edfd6b972e189375fc5f1fb0
- https://git.kernel.org/stable/c/f48ab6ee654ecc350434e4566bc785773f412b7e