perf: Revert to requiring CAP_SYS_ADMIN for uprobes

Summary

CVECVE-2025-38466
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-07-25 16:15:32 UTC
Updated2026-05-12 13:16:50 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: NVD-CWE-noinfo

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected c9e0924e5c2b59365f9c0d43ff8722e79ecf4088 d7ef1afd5b3f43f4924326164cee5397b66abd9c git Not specified
CNA Linux Linux affected c9e0924e5c2b59365f9c0d43ff8722e79ecf4088 c0aec35f861fa746ca45aa816161c74352e6ada8 git Not specified
CNA Linux Linux affected c9e0924e5c2b59365f9c0d43ff8722e79ecf4088 8e8bf7bc6aa6f583336c2fda280b6cea0aed5612 git Not specified
CNA Linux Linux affected c9e0924e5c2b59365f9c0d43ff8722e79ecf4088 183bdb89af1b5193b1d1d9316986053b15ca6fa4 git Not specified
CNA Linux Linux affected c9e0924e5c2b59365f9c0d43ff8722e79ecf4088 a0a8009083e569b5526c64f7d3f2a62baca95164 git Not specified
CNA Linux Linux affected c9e0924e5c2b59365f9c0d43ff8722e79ecf4088 d5074256b642cdeb46a70ce2f15193e766edca68 git Not specified
CNA Linux Linux affected c9e0924e5c2b59365f9c0d43ff8722e79ecf4088 ba677dbe77af5ffe6204e0f3f547f3ba059c6302 git Not specified
CNA Linux Linux affected 5.8 Not specified
CNA Linux Linux unaffected 5.8 semver Not specified
CNA Linux Linux unaffected 5.10.240 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.189 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.146 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.99 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.39 6.12.* semver Not specified
CNA Linux Linux unaffected 6.15.7 6.15.* semver Not specified
CNA Linux Linux unaffected 6.16 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified

References

ReferenceSourceLinkTags
lists.debian.org/debian-lts-announce/2025/10/msg00008.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Third Party Advisory
git.kernel.org/stable/c/d5074256b642cdeb46a70ce2f15193e766edca68 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-082556.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/ba677dbe77af5ffe6204e0f3f547f3ba059c6302 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/c0aec35f861fa746ca45aa816161c74352e6ada8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/8e8bf7bc6aa6f583336c2fda280b6cea0aed5612 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a0a8009083e569b5526c64f7d3f2a62baca95164 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/d7ef1afd5b3f43f4924326164cee5397b66abd9c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/183bdb89af1b5193b1d1d9316986053b15ca6fa4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/10/msg00007.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Third Party Advisory
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