NFC: pn533: bound the UART receive buffer
Published May 1, 2026
5.5
MEDIUMCVSS 3.1
EPSS 0.16%
Description
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.
Affected products
-
Affected
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
-
Affected
- 5.5
Unaffected
- ≥ 0, < 5.5
- ≥ 5.10.253, ≤ 5.10.*
- ≥ 5.15.203, ≤ 5.15.*
- ≥ 6.1.168, ≤ 6.1.*
- ≥ 6.12.81, ≤ 6.12.*
- ≥ 6.18.22, ≤ 6.18.*
- ≥ 6.19.12, ≤ 6.19.*
- ≥ 6.6.134, ≤ 6.6.*
- 7.0
Default status is the baseline for the product. Each version can override it (patched versions can be marked unaffected).
| Vendor | Product | Default status | Versions |
|---|---|---|---|
| Linux | Linux | unaffected | Affected
|
| Linux | Linux | affected | Affected
Unaffected
|
- ≥ 5.5 · < 5.10.253
- ≥ 5.11 · < 5.15.203
- ≥ 5.16 · < 6.1.168
- ≥ 6.2 · < 6.6.134
- ≥ 6.7 · < 6.12.81
- ≥ 6.13 · < 6.18.22
- ≥ 6.19 · < 6.19.12
- 7.0
- 7.0
- 7.0
- 7.0
- 7.0
- 7.0
No data.
Red Hat Enterprise Linux 10
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise Linux 8
kernel-rt
Not affected
Red Hat Enterprise Linux 9
kernel
Not affected
Red Hat Enterprise Linux 9
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 10 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (14)
- https://access.redhat.com/security/cve/CVE-2026-43032 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2464460 Issue Tracking
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-26631 Advisory
- https://git.kernel.org/stable/c/23e925183db26cd322597679669ad29d70ed2ada Patch
- https://git.kernel.org/stable/c/2c1fadd221b21d8038acfe6a0f56291881d5ff76 Patch
- https://git.kernel.org/stable/c/30fe3f5f6494f827d812ff179f295a8e532709d6 Patch
- https://git.kernel.org/stable/c/3adca9be14bf36b927193f05f5aea35a1a90e913 Patch
- https://git.kernel.org/stable/c/8bedf1dd5640ac8997bff00bbefe241b438df397 Patch
- https://git.kernel.org/stable/c/ad2f60de5045bfb5d20ea468a97c8760c6a3a4f8 Patch
- https://git.kernel.org/stable/c/cf2ff10183204349edfd6b972e189375fc5f1fb0 Patch
- https://git.kernel.org/stable/c/f48ab6ee654ecc350434e4566bc785773f412b7e Patch
- https://lore.kernel.org/linux-cve-announce/2026050101-CVE-2026-43032-a377@gregkh/T
- https://nvd.nist.gov/vuln/detail/CVE-2026-43032
- https://www.cve.org/CVERecord?id=CVE-2026-43032
Change history (0)
No recorded changes yet.
CVE.org / MITRE
CISA Vulnrichment
No data
GitHub
No data