CVE-2026-53285: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Wrap DCN32 phantom-plane allocation in DC_RUN_WITH_PREEMPTION_ENABLED [Why] dcn32_validate_bandwidth() wraps dcn32_internal_validate_bw() with DC_FP_START()/DC_FP_END(). In x86 non-RT, DC_FP_START takes fpregs_lock(), which disables local softirqs. The DML1 path through dcn32_enable_phantom_plane() calls kvzalloc() to allocate ~335 KiB for dc_plane_state. This triggers the vmalloc path, which calls BUG_ON(in_interrupt()) because it's invoked within the FPU-enabled (softirq disabled) region, leading to a kernel crash. [How] Wrap the dc_state_create_phantom_plane() call with the DC_RUN_WITH_PREEMPTION_ENABLED() macro to allow preemption during this memory allocation. (cherry picked from commit 885ccbef7b94a8b38f69c4211c679021aa27ad11)

Засегнати продукти

• Linux Linux: 235c67634230b0f9ad8c0185272fed36c892b1c4 преди 19e82047cb68bcde55791ee20178acd431609b8d; 235c67634230b0f9ad8c0185272fed36c892b1c4 преди a8c1480bb066cf0f6e79129b7292e1c99ff68b9b; 235c67634230b0f9ad8c0185272fed36c892b1c4 преди 30bb2ec6695d62f63db4aa6179c4626834ed0cd6; 235c67634230b0f9ad8c0185272fed36c892b1c4 преди 183182235f6d53bac62c6c39014738a54a68dfa6
• Linux Linux: 6.0; преди 6.0; 6.12.114 до 6.12.*; 6.18.57 до 6.18.*; 7.0.10 до 7.0.*; 7.1 до *

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-53285
• https://nvd.nist.gov/vuln/detail/CVE-2026-53285
• https://git.kernel.org/stable/c/19e82047cb68bcde55791ee20178acd431609b8d
• https://git.kernel.org/stable/c/a8c1480bb066cf0f6e79129b7292e1c99ff68b9b
• https://git.kernel.org/stable/c/30bb2ec6695d62f63db4aa6179c4626834ed0cd6
• https://git.kernel.org/stable/c/183182235f6d53bac62c6c39014738a54a68dfa6