7.8

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

Modified
AliasesUBUNTU-CVE-2025-38466DEBIAN-CVE-2025-38466
Published 25-07-2025Last modified 15-10-2026

Vulnerability summary

CVE-2025-38466 is a high (CVSS 7.8) vulnerability in debian debian_linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 11.5% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.22%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 53 · Related 47
DLA-4327-1DLA-4328-1DSA-5973-1DSA-5975-1MGASA-2025-0218MGASA-2025-0219

Timeline

  1. 25-07-2025
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

12%

Versus all other CVEs

30-day change

Increase +0.04 pp

From 0.18% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu135 products
  • linux< 5.15.0-156.166 | < 6.8.0-100.100
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1092.99 | < 6.8.0-1046.49
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linux< 6.1.147-1 | < 6.12.41-1 | < 6.16.3-1
  • debian_linuxEOL11.0
Linux2 products
  • linux≥ c9e0924e5c2b59365f9c0d43ff8722e79ecf4088, < d7ef1afd5b3f43f4924326164cee5397b66abd9c | ≥ c9e0924e5c2b59365f9c0d43ff8722e79ecf4088, < c0aec35f861fa746ca45aa816161c74352e6ada8 | ≥ c9e0924e5c2b59365f9c0d43ff8722e79ecf4088, < 8e8bf7bc6aa6f583336c2fda280b6cea0aed5612 | ≥ c9e0924e5c2b59365f9c0d43ff8722e79ecf4088, < 183bdb89af1b5193b1d1d9316986053b15ca6fa4 | ≥ c9e0924e5c2b59365f9c0d43ff8722e79ecf4088, < a0a8009083e569b5526c64f7d3f2a62baca95164 | ≥ c9e0924e5c2b59365f9c0d43ff8722e79ecf4088, < d5074256b642cdeb46a70ce2f15193e766edca68 | ≥ c9e0924e5c2b59365f9c0d43ff8722e79ecf4088, < ba677dbe77af5ffe6204e0f3f547f3ba059c6302 | 5.8
  • linux_kernel≥ 5.8, < 5.10.240 | ≥ 5.11, < 5.15.189 | ≥ 5.16, < 6.1.146 | ≥ 6.2, < 6.6.99 | ≥ 6.7, < 6.12.39 | ≥ 6.13, < 6.15.7 | 6.16:rc1 | 6.16:rc2 | 6.16:rc3 | 6.16:rc4

3 vendors · 139 products

References

46 links
Show all 46 references