CVE-2026-98177: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Avoid integer underflow in EOP ring size calculation. The low 6 bits of cp_hqd_eop_control store the base-2 logarithm of the EOP ring size. This was calculated as order_base_2(q->eop_ring_buffer_size / 4) - 1 But order_base_2 can in theory return 0, so this could underflow (although in practice the ring buffer size cannot be less than 4096). Change this to order_base_2(q->eop_ring_buffer_size / 8) using properties of logarithms. Also add to the above comment to make the mathematics more clear. (cherry picked from commit f0f43fcf8b2b3a924cad9444340921c96ed5f634)

Засегнати продукти

• Linux Linux: d696d536f0a97ac779d6176107ac4e96d0a2f8b9 преди 287a34c4d712e0bdb67751e21316d9c8d75a528a; d696d536f0a97ac779d6176107ac4e96d0a2f8b9 преди 8ee521b8b189799e361d4233c5180ba56656d4d4
• Linux Linux: 4.3; преди 4.3; 7.2.8 до 7.2.*; 7.3 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-2026-98177
• https://nvd.nist.gov/vuln/detail/CVE-2026-98177
• https://git.kernel.org/stable/c/287a34c4d712e0bdb67751e21316d9c8d75a528a
• https://git.kernel.org/stable/c/8ee521b8b189799e361d4233c5180ba56656d4d4