CVE-2025-38002 - Linux Kernel io_uring fdinfo Lock Bypass Vulnerability

CVE-2025-38002 - Linux Kernel io_uring fdinfo Lock Bypass Vulnerability

https://cvefeed.io/rssfeed/latest.atom / Fri, 06/06/2025 - 17:00
CVE ID : CVE-2025-38002
Published : June 6, 2025, 2:15 p.m. | 18 minutes ago
Description : In the Linux kernel, the following vulnerability has been resolved: io_uring/fdinfo: grab ctx->uring_lock around io_uring_show_fdinfo() Not everything requires locking in there, which is why the 'has_lock' variable exists. But enough does that it's a bit unwieldy to manage. Wrap the whole thing in a ->uring_lock trylock, and just return with no output if we fail to grab it. The existing trylock() will already have greatly diminished utility/output for the failure case. This fixes an issue with reading the SQE fields, if the ring is being actively resized at the same time.
Severity: 0.0 | NA
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