CVE-2024-49907
Estado: ModificadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Check null pointers before using dc->clk_mgr
[WHY & HOW] dc->clk_mgr is null checked previously in the same function, indicating it might be null.
Passing "dc" to "dc->hwss.apply_idle_power_optimizations", which dereferences null "dc->clk_mgr". (The function pointer resolves to "dcn35_apply_idle_power_optimizations".)
This fixes 1 FORWARD_NULL issue reported by Coverity.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.24%
- Percentil entre todas las CVEs puntuadas: 14
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- CWE-476
Referencias
- https://git.kernel.org/stable/c/3f7e533c10db3d0158709a99e2129ff63add6bcd
- https://git.kernel.org/stable/c/5ba3fbf75b243b2863a8be9e7c393e003d3b88f3
- https://git.kernel.org/stable/c/8d54001f8dccd56146973f23f3ab2ba037a21251
- https://git.kernel.org/stable/c/95d9e0803e51d5a24276b7643b244c7477daf463
- https://git.kernel.org/stable/c/9641bc4adf8446034e490ed543ae7e9833cfbdf5
- https://git.kernel.org/stable/c/a2773e0a4b79e7a6463abdffaf8cc4f24428ba18
- https://git.kernel.org/stable/c/a545a9403e04c6e17fdc04a26a61d9feebbba106
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Check null pointers before using dc->clk_mgr\n\n[WHY & HOW]\ndc->clk_mgr is null checked previously in the same function, indicating\nit might be null.\n\nPassing \"dc\" to \"dc->hwss.apply_idle_power_optimizations\", which\ndereferences null \"dc->clk_mgr\". (The function pointer resolves to\n\"dcn35_apply_idle_power_optimizations\".)\n\nThis fixes 1 FORWARD_NULL issue reported by Coverity."
},
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amd/display: comprobar punteros nulos antes de usar dc->clk_mgr [POR QUÉ Y CÓMO] dc->clk_mgr se ha comprobado como nulo previamente en la misma función, lo que indica que podría ser nulo. Pasar \"dc\" a \"dc->hwss.apply_idle_power_optimizations\", lo que desreferencia el puntero nulo \"dc->clk_mgr\". (El puntero de función se resuelve en \"dcn35_apply_idle_power_optimizations\"). Esto soluciona 1 problema FORWARD_NULL informado por Coverity."
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