CVE-2026-43032 (GCVE-0-2026-43032)
Vulnerability from cvelistv5
Published
2026-05-01 14:15
Modified
2026-05-01 14:15
Severity ?
VLAI Severity ?
EPSS score ?
Summary
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.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: c656aa4c27b17a8c70da223ed5ab42145800d6b5 Version: c656aa4c27b17a8c70da223ed5ab42145800d6b5 Version: c656aa4c27b17a8c70da223ed5ab42145800d6b5 Version: c656aa4c27b17a8c70da223ed5ab42145800d6b5 Version: c656aa4c27b17a8c70da223ed5ab42145800d6b5 Version: c656aa4c27b17a8c70da223ed5ab42145800d6b5 Version: c656aa4c27b17a8c70da223ed5ab42145800d6b5 Version: c656aa4c27b17a8c70da223ed5ab42145800d6b5 |
||
{
"containers": {
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{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/nfc/pn533/uart.c"
],
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.5"
},
{
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.253",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.203",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.168",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.134",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.81",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.22",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
"version": "6.19.12",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
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"nodes": [
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"vulnerable": true
},
{
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}
],
"negate": false,
"operator": "OR"
}
]
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFC: pn533: bound the UART receive buffer\n\npn532_receive_buf() appends every incoming byte to dev-\u003erecv_skb and\nonly resets the buffer after pn532_uart_rx_is_frame() recognizes a\ncomplete frame. A continuous stream of bytes without a valid PN532 frame\nheader therefore keeps growing the skb until skb_put_u8() hits the tail\nlimit.\n\nDrop the accumulated partial frame once the fixed receive buffer is full\nso malformed UART traffic cannot grow the skb past\nPN532_UART_SKB_BUFF_LEN."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-01T14:15:31.921Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/8bedf1dd5640ac8997bff00bbefe241b438df397"
},
{
"url": "https://git.kernel.org/stable/c/23e925183db26cd322597679669ad29d70ed2ada"
},
{
"url": "https://git.kernel.org/stable/c/3adca9be14bf36b927193f05f5aea35a1a90e913"
},
{
"url": "https://git.kernel.org/stable/c/2c1fadd221b21d8038acfe6a0f56291881d5ff76"
},
{
"url": "https://git.kernel.org/stable/c/f48ab6ee654ecc350434e4566bc785773f412b7e"
},
{
"url": "https://git.kernel.org/stable/c/ad2f60de5045bfb5d20ea468a97c8760c6a3a4f8"
},
{
"url": "https://git.kernel.org/stable/c/cf2ff10183204349edfd6b972e189375fc5f1fb0"
},
{
"url": "https://git.kernel.org/stable/c/30fe3f5f6494f827d812ff179f295a8e532709d6"
}
],
"title": "NFC: pn533: bound the UART receive buffer",
"x_generator": {
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}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-43032",
"datePublished": "2026-05-01T14:15:31.921Z",
"dateReserved": "2026-05-01T14:12:55.977Z",
"dateUpdated": "2026-05-01T14:15:31.921Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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