GHSA-G689-GJW8-39FQ
Vulnerability from github – Published: 2026-08-28 09:31 – Updated: 2026-08-28 09:31
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
HID: picolcd: prevent NULL pointer dereference in picolcd_send_and_wait()
In picolcd_send_and_wait(), an integer overflow of the signed loop counter 'k' can theoretically lead to a NULL pointer dereference of 'raw_data'. If the loop executes more than INT_MAX times, 'k' becomes negative, making the condition 'k < size' true even when 'size' is 0.
Change the type of 'k' to 'unsigned int' to prevent the overflow and eliminate the out-of-bounds access.
Found by Linux Verification Center (linuxtesting.org) with the Svace static analysis tool.
[jkosina@suse.com: extended hash length]
{
"affected": [],
"aliases": [
"CVE-2026-80605"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-28T08:16:44Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: picolcd: prevent NULL pointer dereference in picolcd_send_and_wait()\n\nIn picolcd_send_and_wait(), an integer overflow of the signed loop counter\n\u0027k\u0027 can theoretically lead to a NULL pointer dereference of \u0027raw_data\u0027.\nIf the loop executes more than INT_MAX times, \u0027k\u0027 becomes negative,\nmaking the condition \u0027k \u003c size\u0027 true even when \u0027size\u0027 is 0.\n\nChange the type of \u0027k\u0027 to \u0027unsigned int\u0027 to prevent the overflow and\neliminate the out-of-bounds access.\n\nFound by Linux Verification Center (linuxtesting.org) with the Svace static\nanalysis tool.\n\n[jkosina@suse.com: extended hash length]",
"id": "GHSA-g689-gjw8-39fq",
"modified": "2026-08-28T09:31:46Z",
"published": "2026-08-28T09:31:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80605"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0021eb09041f021c079be1022934a280f7f176c0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/42dc0b7b55fe0499fc09183f34a1c46d1dcccf77"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/48caee2c106b03301c72fe389ebff00d852c58d5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a02d5d7ad7ae5fa3756b8332f7350e973085dcb3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d354e523c6f740db758cafcd4c11bb7913285ed8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/dc176447c7279435c46735db7da81aed1ec25cc2"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e4edeefb8d5bfceb2058e2b3291f4ae1e5a76e61"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ef649703dce0df1364fcec3cdad9b32d1c522939"
}
],
"schema_version": "1.4.0",
"severity": []
}
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Sightings
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vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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