CVE-2025-21836 - Linux Kernel IoUring Buffer Reuse Vulnerability

CVE-2025-21836 - Linux Kernel IoUring Buffer Reuse Vulnerability

https://cvefeed.io/rssfeed/latest.atom / Fri, 03/07/2025 - 13:29
CVE ID : CVE-2025-21836
Published : March 7, 2025, 9:15 a.m. | 1 hour, 37 minutes ago
Description : In the Linux kernel, the following vulnerability has been resolved: io_uring/kbuf: reallocate buf lists on upgrade IORING_REGISTER_PBUF_RING can reuse an old struct io_buffer_list if it was created for legacy selected buffer and has been emptied. It violates the requirement that most of the field should stay stable after publish. Always reallocate it instead.
Severity: 0.0 | NA
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