Detections
Analytics
CVE-2025-38466
high
Description
In the Linux kernel, the following vulnerability has been resolved: perf: Revert to requiring CAP_SYS_ADMIN for uprobes Jann reports that uprobes can be used destructively when used in the middle of an instruction. The kernel only verifies there is a valid instruction at the requested offset, but due to variable instruction length cannot determine if this is an instruction as seen by the intended execution stream. Additionally, Mark Rutland notes that on architectures that mix data in the text segment (like arm64), a similar things can be done if the data word is 'mistaken' for an instruction. As such, require CAP_SYS_ADMIN for uprobes.
References
https://git.kernel.org/stable/c/d7ef1afd5b3f43f4924326164cee5397b66abd9c
https://git.kernel.org/stable/c/d5074256b642cdeb46a70ce2f15193e766edca68
https://git.kernel.org/stable/c/c0aec35f861fa746ca45aa816161c74352e6ada8
https://git.kernel.org/stable/c/ba677dbe77af5ffe6204e0f3f547f3ba059c6302
https://git.kernel.org/stable/c/a0a8009083e569b5526c64f7d3f2a62baca95164
https://git.kernel.org/stable/c/8e8bf7bc6aa6f583336c2fda280b6cea0aed5612
https://git.kernel.org/stable/c/183bdb89af1b5193b1d1d9316986053b15ca6fa4