GHSA-P42V-4MRM-3J3G
Vulnerability from github – Published: 2025-04-03 09:32 – Updated: 2025-11-03 21:33In the Linux kernel, the following vulnerability has been resolved:
drm/radeon: fix uninitialized size issue in radeon_vce_cs_parse()
On the off chance that command stream passed from userspace via ioctl() call to radeon_vce_cs_parse() is weirdly crafted and first command to execute is to encode (case 0x03000001), the function in question will attempt to call radeon_vce_cs_reloc() with size argument that has not been properly initialized. Specifically, 'size' will point to 'tmp' variable before the latter had a chance to be assigned any value.
Play it safe and init 'tmp' with 0, thus ensuring that radeon_vce_cs_reloc() will catch an early error in cases like these.
Found by Linux Verification Center (linuxtesting.org) with static analysis tool SVACE.
(cherry picked from commit 2d52de55f9ee7aaee0e09ac443f77855989c6b68)
{
"affected": [],
"aliases": [
"CVE-2025-21996"
],
"database_specific": {
"cwe_ids": [
"CWE-908"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-04-03T08:15:15Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/radeon: fix uninitialized size issue in radeon_vce_cs_parse()\n\nOn the off chance that command stream passed from userspace via\nioctl() call to radeon_vce_cs_parse() is weirdly crafted and\nfirst command to execute is to encode (case 0x03000001), the function\nin question will attempt to call radeon_vce_cs_reloc() with size\nargument that has not been properly initialized. Specifically, \u0027size\u0027\nwill point to \u0027tmp\u0027 variable before the latter had a chance to be\nassigned any value.\n\nPlay it safe and init \u0027tmp\u0027 with 0, thus ensuring that\nradeon_vce_cs_reloc() will catch an early error in cases like these.\n\nFound by Linux Verification Center (linuxtesting.org) with static\nanalysis tool SVACE.\n\n(cherry picked from commit 2d52de55f9ee7aaee0e09ac443f77855989c6b68)",
"id": "GHSA-p42v-4mrm-3j3g",
"modified": "2025-11-03T21:33:29Z",
"published": "2025-04-03T09:32:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21996"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0effb378ebce52b897f85cd7f828854b8c7cb636"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3ce08215cad55c10a6eeeb33d3583b6cfffe3ab8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5b4d9d20fd455a97920cf158dd19163b879cf65d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/78b07dada3f02f77762d0755a96d35f53b02be69"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9b2da9c673a0da1359a2151f7ce773e2f77d71a9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/dd1801aa01bba1760357f2a641346ae149686713"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/dd8689b52a24807c2d5ce0a17cb26dc87f75235c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f5e049028124f755283f2c07e7a3708361ed1dc8"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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