Skip to content
Fencer Intel
medium 6.9

CVE-2010-4347 json

The ACPI subsystem in the Linux kernel before 2.6.36.2 uses 0222 permissions for the debugfs custom_method file, which allows local users t…

published 15y ago modified 4mo ago also EUVD-2010-4316

cvss
6.9
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.2%
EPSS 2.2% chance of exploitation in 30 days, percentile 82%
public exploits
1
Exploit-DB

Summary

The ACPI subsystem in the Linux kernel before 2.6.36.2 uses 0222 permissions for the debugfs custom_method file, which allows local users to gain privileges by placing a custom ACPI method in the ACPI interpreter tables, related to the acpi_debugfs_init function in drivers/acpi/debugfs.c.

Patch / fix

  • linux linux_kernel 2.6.36.2
  • kernel-rt enterprise mrg 1 2.6.33.7-rt29.55.el5rt
  • perf enterprise mrg 1 2.6.33.7-rt29.55.el5rt
  • kernel-rt-trace enterprise mrg 1 2.6.33.7-rt29.55.el5rt
  • kernel-rt-vanilla enterprise mrg 1 2.6.33.7-rt29.55.el5rt
  • kernel-rt-debuginfo-common enterprise mrg 1 2.6.33.7-rt29.55.el5rt

red hat advisories RHSA-2011:0330

Is CVE-2010-4347 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2010-4347 updated cvss 6.9

kernel: local privilege escalation via /sys/kernel/debug/acpi/custom_method

  • Red Hat MRG Realtime for RHEL 5 Server perf 2.6.33.7-rt29.55.el5rt, kernel-rt 2.6.33.7-rt29.55.el5rt, kernel-rt-trace 2.6.33.7-rt29.55.el5rt, kernel-rt-vanilla 2.6.33.7-rt29.55.el5rt, kernel-rt-debuginfo-common 2.6.33.7-rt29.55.el5rt
    fixed: vendor fix RHSA-2011:0330

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. First public exploit (EDB-15774)
  2. Published

Exploit prediction

2.20% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-15774 Linux Kernel < 2.6.37-rc2 - 'ACPI custom_method' Local Privilege Escalation local, 2010-12-18
  • securityfocus.com http://www.securityfocus.com/bid/45408 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 6.9 AV:L/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-269 Improper Privilege Management
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.