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CVE-2026-64599: Linux, грешка в паметта

7.8

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.

CVE радар: още уязвимости от този вид

  • Експлоатация: няма данни за експлоатация
  • Атаката не може да се автоматизира

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: crypto: amlogic - avoid double cleanup in meson_crypto_probe() When meson_allocate_chanlist() fails after a partial allocation, it already unwinds the allocated chanlist state through its local error path. meson_crypto_probe() then jump to error_flow and calls meson_free_chanlist() again, causing the same per-flow resources to be torn down twice. In the reproduced failure path, the second teardown re-entered crypto_engine_exit() on an already destroyed worker and KASAN reported a slab-use-after-free in kthread_destroy_worker(). Prevent double-free by handling partial allocation failures locally within meson_allocate_chanlist() and skipping the outer cleanup path. The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. The bug was reproduced in a QEMU x86_64 guest booted with KASAN on v7.1, using the reproducer under tools/testing/meson_crypto_probe. The reproducer forces the second dma_alloc_attrs() call in the gxl-crypto probe path to return NULL, making meson_allocate_chanlist() fail after partial initialization. On the unpatched kernel this reliably triggered a slab-use-after-free. With this fix applied, the same reproducer no longer emits any KASAN report and the probe fails cleanly with -ENOMEM. ================================================================== BUG: KASAN: slab-use-after-free in kthread_destroy_worker+0xb2/0xd0 Read of size 8 at addr ff1100010c057a68 by task insmod/265 CPU: 1 UID: 0 PID: 265 Comm: insmod Tainted: G O 7.1.0-rc2-00376-g810af9adc907-dirty #10 PREEMPT(lazy) Tainted: [O]=OOT_MODULE Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0x68/0xa0 print_report+0xcb/0x5e0 ? __virt_addr_valid+0

Засегнати продукти

  • Linux Linux: 48fe583fe54177bfb80f348e2a5cc34c3f710095 преди c2c48aa7a6be36d4c93da75d14d4b4f2f4168c81; 48fe583fe54177bfb80f348e2a5cc34c3f710095 преди c80360b4e85099fc3835378a96a59c0a2480fb07; 48fe583fe54177bfb80f348e2a5cc34c3f710095 преди 5b452019a4127f63c1f2147237fc287d1581f606; 48fe583fe54177bfb80f348e2a5cc34c3f710095 преди f30e2b879bda14bc3e1524fba6f8ab9ec119da90; 48fe583fe54177bfb80f348e2a5cc34c3f710095 преди 6effdbaca3cd8354540bdf42c7f5fb84412afeb7; 48fe583fe54177bfb80f348e2a5cc34c3f710095 преди 84a00be9b736aa5dce902a290f62cbbbdcfab9ed; 48fe583fe54177bfb80f348e2a5cc34c3f710095 преди 6dda8406d8a3da2519c8b388d443d7357839cb63; 48fe583fe54177bfb80f348e2a5cc34c3f710095 преди 6d827ade51a24e18d81afb9f32756d339520a14c
  • Linux Linux: 5.5; преди 5.5; 5.10.261 до 5.10.*; 5.15.212 до 5.15.*; 6.1.178 до 6.1.*; 6.6.145 до 6.6.*; 6.12.96 до 6.12.*; 6.18.39 до 6.18.*; 7.1.4 до 7.1.*; от 7.2 нататък

Вид слабост

История

  • 6 август 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-64599: Linux, грешка в паметта | freedomonline.bg