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CVE-2026-46316: Linux, състезание за ресурс

9.3

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, без 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: KVM: arm64: vgic-its: Drop the translation cache reference only for the erased entry vgic_its_invalidate_cache() walks the per-ITS translation cache with xa_for_each() and drops the cache's reference on each entry with vgic_put_irq(). It puts the iterated pointer, though, rather than the value returned by xa_erase(). The function is called from contexts that do not exclude one another: the ITS command handlers hold its_lock, the GITS_CTLR write path holds cmd_lock, and the path that clears EnableLPIs in a redistributor's GICR_CTLR holds neither. Two or more of them can drain the same cache concurrently, and if each one observes the same entry, erases it and then puts it, the single reference the cache holds on that entry is dropped more than once. The entry can then be freed while an ITE still maps it. xa_erase() is atomic and returns the previous entry, so put only the entry that this context actually removed. The cache reference is then dropped exactly once per entry even when the invalidations run concurrently, and the behavior is unchanged when only one context runs.

Засегнати продукти

  • Linux Linux: 8201d1028caa4fae88e222c4e8cf541fdf45b821 преди b7b72e88046328c9fdc638fe887d4240257dd5dc; 8201d1028caa4fae88e222c4e8cf541fdf45b821 преди 2bbc395e81bd29c543a0529a678327e932a7ec69; 8201d1028caa4fae88e222c4e8cf541fdf45b821 преди 9121f4605ab94969f62d1b5714ca3c6c69bd202f; 8201d1028caa4fae88e222c4e8cf541fdf45b821 преди 13031fb6b8357fbbcded2a7f4cba73e4781ee594
  • Linux Linux: 6.10; преди 6.10; 6.12.93 до 6.12.*; 6.18.35 до 6.18.*; 7.0.12 до 7.0.*; от 7.1 нататък
  • Red Hat: още 13 продукта, добавени от Red Hat

    Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.6 Extended Update Support, Red Hat OpenShift Container Platform 4.19, Red Hat OpenShift Container Platform 4.20, Red Hat OpenShift Container Platform 4.21, Red Hat OpenShift Container Platform 4.22, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux for NVIDIA 26, Red Hat OpenShift Container Platform 4

Вид слабост

История

  • 9 юни 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-46316: Linux, състезание за ресурс | freedomonline.bg