CVE-2025-38466
perf: Revert to requiring CAP_SYS_ADMIN for uprobes
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perf: Revert to requiring CAP_SYS_ADMIN for uprobes
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.
Reserved 2025-04-16 | Published 2025-07-25 | Updated 2025-07-25 | Assigner Linuxgit.kernel.org/...c/d7ef1afd5b3f43f4924326164cee5397b66abd9c
git.kernel.org/...c/c0aec35f861fa746ca45aa816161c74352e6ada8
git.kernel.org/...c/8e8bf7bc6aa6f583336c2fda280b6cea0aed5612
git.kernel.org/...c/183bdb89af1b5193b1d1d9316986053b15ca6fa4
git.kernel.org/...c/a0a8009083e569b5526c64f7d3f2a62baca95164
git.kernel.org/...c/d5074256b642cdeb46a70ce2f15193e766edca68
git.kernel.org/...c/ba677dbe77af5ffe6204e0f3f547f3ba059c6302
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