3.6

CVE-2011-1021: linux linux_kernel

Modified
AliasesUBUNTU-CVE-2011-1021
Published 21-06-2012Last modified 06-08-2024

Vulnerability summary

CVE-2011-1021 is a low (CVSS 3.6) vulnerability in linux linux_kernel. EPSS estimates a 0.93% chance of exploitation in the next 30 days, higher than 60.6% of scored vulnerabilities. 2 public exploits are recorded.

Priority
Prioritiseweaponized exploit

Weaponized exploit (exploit-database, 18-12-2010)

Source freshness unavailable

How is this decided?
CVSS score
3.6/10
010
Low · v2.0 (NVD)
EPSS score
0.93%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits2github, exploit-database

Advisory lineage

Upstream 0 · Downstream 1
RHSA-2011:1253

Timeline

  1. 21-06-2012
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

drivers/acpi/debugfs.c in the Linux kernel before 3.0 allows local users to modify arbitrary kernel memory locations by leveraging root privileges to write to the /sys/kernel/debug/acpi/custom_method file. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-4347.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

0.93%

Chance of exploitation in the next 30 days

Percentile

61%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.93% on 04-10-2026

04-10-202603-11-2026

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

2 found
  • githubUnverified

    Linux

    Maturity: poc

  • exploit-databaselocallinuxVerified

    Linux Kernel < 2.6.37-rc2 - 'ACPI custom_method' Local Privilege Escalation

    Maturity: weaponized

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, no authentication (CVSS vector). Other conditions: not stated in public data.

Ubuntu7 products
  • linux< 3.11.0-12.19
  • linux-flo< 3.4.0-1.3
  • linux-goldfish< 3.4.0-1.7
  • linux-grouper< 3.1.10-8.28
  • linux-maguro< 3.0.0-3.18
Linux1 product
  • linux_kernel≤ 2.6.9 | 2.6.9:rc1 | 2.6.9:rc2 | 2.6.9:rc3 | 2.6.9:rc4

2 vendors · 8 products

References

9 links