CVE-2024-49921
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Check null pointers before used [WHAT & HOW] Poniters, such as dc->clk_mgr, are null checked previously in the same function, so Coverity warns "implies that "dc->clk_mgr" might be null". As a result, these pointers need to be checked when used again. This fixes 10 FORWARD_NULL issues reported by Coverity.
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2024-10-21 18:15:14.260000
Last modified
2026-10-30 13:17:39.230000
View original CVE JSON
{
"id": "CVE-2024-49921",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2024-10-21T18:15:14.260",
"lastModified": "2026-10-30T13:17:39.230",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Check null pointers before used\n\n[WHAT & HOW]\nPoniters, such as dc->clk_mgr, are null checked previously in the same\nfunction, so Coverity warns \"implies that \"dc->clk_mgr\" might be null\".\nAs a result, these pointers need to be checked when used again.\n\nThis fixes 10 FORWARD_NULL issues reported by Coverity."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amd/display: comprobar punteros nulos antes de usarlos [QUÉ Y CÓMO] Los punteros, como dc->clk_mgr, se comprueban antes en la misma función, por lo que Coverity advierte que \"implica que \"dc->clk_mgr\" podría ser nulo\". Como resultado, estos punteros deben comprobarse cuando se utilicen nuevamente. Esto soluciona 10 problemas de FORWARD_NULL informados por Coverity."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/gpu/drm/amd/display/dc/clk_mgr/dce110/dce110_clk_mgr.c",
"drivers/gpu/drm/amd/display/dc/hubp/dcn10/dcn10_hubp.c",
"drivers/gpu/drm/amd/display/dc/hubp/dcn20/dcn20_hubp.c",
"drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c",
"drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c",
"drivers/gpu/drm/amd/display/dc/hwss/dcn31/dcn31_hwseq.c",
"drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c",
"drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
"lessThan": "348f8668dfa77294a277946cb0231c29b5474e1d",
"versionType": "git",
"status": "affected"
},
{
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"lessThan": "692e9a20018da7aa225d8dced44803f9852aca81",
"versionType": "git",
"status": "affected"
},
{
"version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
"lessThan": "5b35bf1a82eb29841b67ff5643ba83762250fc24",
"versionType": "git",
"status": "affected"
},
{
"version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
"lessThan": "be1fb44389ca3038ad2430dac4234669bc177ee3",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"drivers/gpu/drm/amd/display/dc/clk_mgr/dce110/dce110_clk_mgr.c",
"drivers/gpu/drm/amd/display/dc/hubp/dcn10/dcn10_hubp.c",
"drivers/gpu/drm/amd/display/dc/hubp/dcn20/dcn20_hubp.c",
"drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c",
"drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c",
"drivers/gpu/drm/amd/display/dc/hwss/dcn31/dcn31_hwseq.c",
"drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c",
"drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "4.15",
"status": "affected"
},
{
"version": "0",
"lessThan": "4.15",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.191",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.160",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.11.3",
"lessThanOrEqual": "6.11.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Primary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2024-10-22T13:40:21.671812Z",
"id": "CVE-2024-49921",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-476"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.11.3",
"matchCriteriaId": "6D5FF9C2-A011-4A64-B614-F9244ED2EA0D"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/348f8668dfa77294a277946cb0231c29b5474e1d",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/5b35bf1a82eb29841b67ff5643ba83762250fc24",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/692e9a20018da7aa225d8dced44803f9852aca81",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/be1fb44389ca3038ad2430dac4234669bc177ee3",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
}
]
}