CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: iommu: Fix WARN_ON in __iommu_group_set_domain_nofail() due to reset In __iommu_group_set_domain_internal(), concurrent domain attachments are rejected when any device in the group is recovering. This is necessary to fence concurrent attachments to a multi-device group where devices might share the same RID due to PCI DMA alias quirks, but triggers the WARN_ON in __iommu_group_set_domain_nofail(). Other IOMMU_SET_DOMAIN_MUST_SUCCEED callers in detach/teardown paths, such as __iommu_group_set_core_domain and __iommu_release_dma_ownership, should not be rejected, as the domain would be freed anyway in these nofail paths while group->domain is still pointing to it. So pci_dev_reset_iommu_done() could trigger a UAF when re-attaching group->domain. Honor the IOMMU_SET_DOMAIN_MUST_SUCCEED flag, allowing the callers through the group->recovery_cnt fence, so as to update the group->domain pointer. Instead add a gdev->blocked check in the device iteration loop, to prevent any concurrent per-device detachment.
Засегнати продукти
- Linux Linux: c279e83953d937470f8a6e69b69f62608714f13f преди 8fc289e809f3eb7e36cadc4684ab6fad747a5a93; c279e83953d937470f8a6e69b69f62608714f13f преди 5474e6e17a262db45c60575c73f70210f5c7001f
- Linux Linux: 7.0; преди 7.0; 7.0.10 до 7.0.*; от 7.1 нататък
Red Hat: още 5 продукта, добавени от Red Hat
Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9
Вид слабост
История
- 24 юни 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-52952
- https://nvd.nist.gov/vuln/detail/CVE-2026-52952
- https://git.kernel.org/stable/c/8fc289e809f3eb7e36cadc4684ab6fad747a5a93
- https://git.kernel.org/stable/c/5474e6e17a262db45c60575c73f70210f5c7001f
- https://access.redhat.com/security/cve/CVE-2026-52952
- https://bugzilla.redhat.com/show_bug.cgi?id=2492422
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52952.json