CVE-2026-90424: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: iommu/tegra241-cmdqv: Fix VINTF0 leak on the init-failure path tegra241_cmdqv_init_structures() allocates VINTF0 with kzalloc_obj(), inits it, and preallocates its logical VCMDQs. Two of its error paths leak. When tegra241_cmdqv_init_vintf() fails it returns before VINTF0 reaches the cmdqv->vintfs[] array, so the devres unwind on probe failure cannot reach it; free it directly there. A later VCMDQ preallocation failure instead leaves VINTF0 published, and so this time the unwind does reach tegra241_cmdqv_remove_vintf(), which then frees it from vintf->hyp_own. But tegra241_vintf_hw_init() sets that flag only afterward, from a HW read-back, so the still-uninited VINTF0 reads as guest-owned and leaks, with mutex_destroy() and ida_destroy() run on fields it never set up. Decide ownership from vintf->idx instead, the index assigned when its id is allocated: idx 0 is the kernel-owned VINTF0, while idx >= 1 marks a guest VINTF. So the in-kernel free decision in tegra241_cmdqv_remove_vintf() and tegra241_vintf_free_lvcmdq() now keys on idx too, and hyp_own stays a pure HW-readback state.

Засегнати продукти

• Linux Linux: 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 преди 05a1405d0cba3d8253261b02eb65e5cd3ca09ab3; 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 преди 1d2271d7df5230e4ce36bdafd17524bd004f3b3f; 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 преди 417190bde0fda4ee857999a722ca90163fbec587; 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 преди f40f3144477314b489e4bc209c06cb51679fe82b
• Linux Linux: 6.12; преди 6.12; 6.12.114 до 6.12.*; 6.18.52 до 6.18.*; 7.2.6 до 7.2.*; от 7.3 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-2026-90424
• https://nvd.nist.gov/vuln/detail/CVE-2026-90424
• https://git.kernel.org/stable/c/05a1405d0cba3d8253261b02eb65e5cd3ca09ab3
• https://git.kernel.org/stable/c/1d2271d7df5230e4ce36bdafd17524bd004f3b3f
• https://git.kernel.org/stable/c/417190bde0fda4ee857999a722ca90163fbec587
• https://git.kernel.org/stable/c/f40f3144477314b489e4bc209c06cb51679fe82b