High 7.8Published Jul 25, 2025

CVE-2025-38466perf: Revert to requiring CAP_SYS_ADMIN for uprobes

Updated under an hour ago (Oct 27, 2026, 8:50 AM ET)

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Exploited in the last 30 days

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.

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from c9e0924e5c2b59365f9c0d43ff8722e79ecf4088 before d7ef1afd5b3f43f4924326164cee5397b66abd9c; from c9e0924e5c2b59365f9c0d43ff8722e79ecf4088 before c0aec35f861fa746ca45aa816161c74352e6ada8; from c9e0924e5c2b59365f9c0d43ff8722e79ecf4088 before 8e8bf7bc6aa6f583336c2fda280b6cea0aed5612; from c9e0924e5c2b59365f9c0d43ff8722e79ecf4088 before 183bdb89af1b5193b1d1d9316986053b15ca6fa4; from c9e0924e5c2b59365f9c0d43ff8722e79ecf4088 before a0a8009083e569b5526c64f7d3f2a62baca95164; from c9e0924e5c2b59365f9c0d43ff8722e79ecf4088 before d5074256b642cdeb46a70ce2f15193e766edca68; from c9e0924e5c2b59365f9c0d43ff8722e79ecf4088 before ba677dbe77af5ffe6204e0f3f547f3ba059c6302	CNA record
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.5	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.5	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.5	CISA ADP
linux linux_kernel linux:linux_kernel	from 5.8 before 5.10.240; from 5.11 before 5.15.189; from 5.16 before 6.1.146; from 6.2 before 6.6.99; from 6.7 before 6.12.39; from 6.13 before 6.15.7; 6.16; 6.16; and 2 more ranges	NVD
debian debian_linux debian:debian_linux	11.0	NVD

References

References

https://git.kernel.org/stable/c/d7ef1afd5b3f43f4924326164cee5397b66abd9c	patch
https://git.kernel.org/stable/c/c0aec35f861fa746ca45aa816161c74352e6ada8	patch
https://git.kernel.org/stable/c/8e8bf7bc6aa6f583336c2fda280b6cea0aed5612	patch
https://git.kernel.org/stable/c/183bdb89af1b5193b1d1d9316986053b15ca6fa4	patch
https://git.kernel.org/stable/c/a0a8009083e569b5526c64f7d3f2a62baca95164	patch
https://git.kernel.org/stable/c/d5074256b642cdeb46a70ce2f15193e766edca68	patch
https://git.kernel.org/stable/c/ba677dbe77af5ffe6204e0f3f547f3ba059c6302	patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html	third-party-advisory
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html	third-party-advisory
https://cert-portal.siemens.com/productcert/html/ssa-082556.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.