CVE-2026-23332: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: cpufreq: intel_pstate: Fix crash during turbo disable When the system is booted with kernel command line argument "nosmt" or "maxcpus" to limit the number of CPUs, disabling turbo via: echo 1 > /sys/devices/system/cpu/intel_pstate/no_turbo results in a crash: PF: supervisor read access in kernel mode PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: Oops: 0000 [#1] SMP PTI ... RIP: 0010:store_no_turbo+0x100/0x1f0 ... This occurs because for_each_possible_cpu() returns CPUs even if they are not online. For those CPUs, all_cpu_data[] will be NULL. Since commit 973207ae3d7c ("cpufreq: intel_pstate: Rearrange max frequency updates handling code"), all_cpu_data[] is dereferenced even for CPUs which are not online, causing the NULL pointer dereference. To fix that, pass CPU number to intel_pstate_update_max_freq() and use all_cpu_data[] for those CPUs for which there is a valid cpufreq policy.

Засегнати продукти

• Linux Linux: 973207ae3d7c3c92df4a382df5d7bd695deaa904 преди a1850e2aef4d15405e7ff53fd51c4b3124d46182; 973207ae3d7c3c92df4a382df5d7bd695deaa904 преди d20d48916ce8531b157c2edeba76d69af2974270; 973207ae3d7c3c92df4a382df5d7bd695deaa904 преди 6b050482ec40569429d963ac52afa878691b04c9
• Linux Linux: 6.16; преди 6.16; 6.18.17 до 6.18.*; 6.19.7 до 6.19.*; от 7.0 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-23332
• https://nvd.nist.gov/vuln/detail/CVE-2026-23332
• https://git.kernel.org/stable/c/a1850e2aef4d15405e7ff53fd51c4b3124d46182
• https://git.kernel.org/stable/c/d20d48916ce8531b157c2edeba76d69af2974270
• https://git.kernel.org/stable/c/6b050482ec40569429d963ac52afa878691b04c9