fkie_cve-2024-27040
Vulnerability from fkie_nvd
Published
2024-05-01 13:15
Modified
2024-11-21 09:03
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Add 'replay' NULL check in 'edp_set_replay_allow_active()'
In the first if statement, we're checking if 'replay' is NULL. But in
the second if statement, we're not checking if 'replay' is NULL again
before calling replay->funcs->replay_set_power_opt().
if (replay == NULL && force_static)
return false;
...
if (link->replay_settings.replay_feature_enabled &&
replay->funcs->replay_set_power_opt) {
replay->funcs->replay_set_power_opt(replay, *power_opts, panel_inst);
link->replay_settings.replay_power_opt_active = *power_opts;
}
If 'replay' is NULL, this will cause a null pointer dereference.
Fixes the below found by smatch:
drivers/gpu/drm/amd/amdgpu/../display/dc/link/protocols/link_edp_panel_control.c:895 edp_set_replay_allow_active() error: we previously assumed 'replay' could be null (see line 887)
References
Impacted products
| Vendor | Product | Version |
|---|
{
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Add \u0027replay\u0027 NULL check in \u0027edp_set_replay_allow_active()\u0027\n\nIn the first if statement, we\u0027re checking if \u0027replay\u0027 is NULL. But in\nthe second if statement, we\u0027re not checking if \u0027replay\u0027 is NULL again\nbefore calling replay-\u003efuncs-\u003ereplay_set_power_opt().\n\nif (replay == NULL \u0026\u0026 force_static)\n return false;\n\n...\n\nif (link-\u003ereplay_settings.replay_feature_enabled \u0026\u0026\n replay-\u003efuncs-\u003ereplay_set_power_opt) {\n\treplay-\u003efuncs-\u003ereplay_set_power_opt(replay, *power_opts, panel_inst);\n\tlink-\u003ereplay_settings.replay_power_opt_active = *power_opts;\n}\n\nIf \u0027replay\u0027 is NULL, this will cause a null pointer dereference.\n\nFixes the below found by smatch:\ndrivers/gpu/drm/amd/amdgpu/../display/dc/link/protocols/link_edp_panel_control.c:895 edp_set_replay_allow_active() error: we previously assumed \u0027replay\u0027 could be null (see line 887)"
},
{
"lang": "es",
"value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: drm/amd/display: agregue la verificaci\u00f3n NULL \u0027replay\u0027 en \u0027edp_set_replay_allow_active()\u0027 En la primera declaraci\u00f3n if, estamos verificando si \u0027replay\u0027 es NULL. Pero en la segunda declaraci\u00f3n if, no estamos verificando si \u0027replay\u0027 es NULL nuevamente antes de llamar a replay-\u0026gt;funcs-\u0026gt;replay_set_power_opt(). si (repetici\u00f3n == NULL \u0026amp;\u0026amp; force_static) devuelve falso; ... if (enlace-\u0026gt;replay_settings.replay_feature_enabled \u0026amp;\u0026amp; replay-\u0026gt;funcs-\u0026gt;replay_set_power_opt) { replay-\u0026gt;funcs-\u0026gt;replay_set_power_opt(replay, *power_opts, panel_inst); enlace-\u0026gt;replay_settings.replay_power_opt_active = *power_opts; } Si \u0027repetici\u00f3n\u0027 es NULL, esto provocar\u00e1 una desreferencia del puntero nulo. Corrige el siguiente error encontrado por smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/link/protocols/link_edp_panel_control.c:895 edp_set_replay_allow_active(): previamente asumimos que \u0027repetir\u0027 podr\u00eda ser nulo (ver l\u00ednea 887)"
}
],
"id": "CVE-2024-27040",
"lastModified": "2024-11-21T09:03:43.543",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 4.7,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.0,
"impactScore": 3.6,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
},
"published": "2024-05-01T13:15:49.600",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/d0e94f4807ff0df66cf447d6b4bbb8ac830e99c3"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/e7cadd5d3a8ffe334d0229ba9eda4290138d56e7"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/f610c46771ef1047e46d61807aa7c69cd29e63d8"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/f6aed043ee5d75b3d1bfc452b1a9584b63c8f76b"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/d0e94f4807ff0df66cf447d6b4bbb8ac830e99c3"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/e7cadd5d3a8ffe334d0229ba9eda4290138d56e7"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/f610c46771ef1047e46d61807aa7c69cd29e63d8"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/f6aed043ee5d75b3d1bfc452b1a9584b63c8f76b"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
- 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.