CVE-2026-90389: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: md: scope memalloc_noio to allocation critical sections Storing a memalloc_noio_save() token in mddev->noio_flags lets one task save the token and another task restore it. With concurrent suspend sysfs writes, task A can enter PF_MEMALLOC_NOIO, return to userspace still in that scope, and later task B can restore A's saved token. Avoid tying the token lifetime to mddev. Keep mddev_suspend() and mddev_resume() only responsible for array suspension, and enter PF_MEMALLOC_NOIO only in the MD paths that allocate memory after the array has been suspended. Restore the token before resuming the array. A reproducer repeatedly writes suspend_lo and suspend_hi from concurrent workers and checks each worker's /proc/self/stat flags before and after the sysfs write.

Засегнати продукти

• Linux Linux: 78f57ef9d50a75326da73d352d7c27828495229a преди 72ebfdf507ede7d7f2b7ca0a5634811a0e4bf045; 78f57ef9d50a75326da73d352d7c27828495229a преди 28fdea874f68cac6c36651b1fc7272fd2199c48d; 78f57ef9d50a75326da73d352d7c27828495229a преди a58923756b0f8e71032070c23ae0b167e46731da; 78f57ef9d50a75326da73d352d7c27828495229a преди bace2010dd7ac07bc980575afb135c406730a7fe
• Linux Linux: 5.8; преди 5.8; 6.12.110 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-2026-90389
• https://nvd.nist.gov/vuln/detail/CVE-2026-90389
• https://git.kernel.org/stable/c/72ebfdf507ede7d7f2b7ca0a5634811a0e4bf045
• https://git.kernel.org/stable/c/28fdea874f68cac6c36651b1fc7272fd2199c48d
• https://git.kernel.org/stable/c/a58923756b0f8e71032070c23ae0b167e46731da
• https://git.kernel.org/stable/c/bace2010dd7ac07bc980575afb135c406730a7fe