CVE-2026-89443: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: platform/x86: ISST: Validate level in perf mask ioctls isst_if_get_perf_level_mask() and isst_if_get_base_freq_mask() use the user-provided level as an index into perf_levels[] via _read_pp_level_info() and _read_bf_level_info(), but neither helper validates it first. The adjacent level-info helpers reject levels above max_level before reading the same per-level register block. Add the same bounds checks to the mask helpers, and reject disabled SST-PP levels in isst_if_get_perf_level_mask() to match isst_if_get_perf_level_info(). This prevents out-of-bounds reads from the per-level offset table on invalid ioctl input.

Засегнати продукти

• Linux Linux: ea009e4769fa3bd05d4c111c3b6865eb3a9be829 преди beb22ebf76c0415f22d2d0c3f1ff0627e7ae4a68; ea009e4769fa3bd05d4c111c3b6865eb3a9be829 преди 1a8bab5ceee1a42a78de12d3d69f67516a20588e; ea009e4769fa3bd05d4c111c3b6865eb3a9be829 преди 1889a9156553f0692acd57caf15e877baace1a01; ea009e4769fa3bd05d4c111c3b6865eb3a9be829 преди d19385624bdfb577db9c94bb8879992fd5e17bcd; ea009e4769fa3bd05d4c111c3b6865eb3a9be829 преди 80e0d353c86a9a168ad6d213f494796294381538
• Linux Linux: 6.4; преди 6.4; 6.6.157 до 6.6.*; 6.12.109 до 6.12.*; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; от 7.3 нататък

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-2026-89443
• https://nvd.nist.gov/vuln/detail/CVE-2026-89443
• https://git.kernel.org/stable/c/beb22ebf76c0415f22d2d0c3f1ff0627e7ae4a68
• https://git.kernel.org/stable/c/1a8bab5ceee1a42a78de12d3d69f67516a20588e
• https://git.kernel.org/stable/c/1889a9156553f0692acd57caf15e877baace1a01
• https://git.kernel.org/stable/c/d19385624bdfb577db9c94bb8879992fd5e17bcd
• https://git.kernel.org/stable/c/80e0d353c86a9a168ad6d213f494796294381538