5.9

CVE-2009-2848: canonical ubuntu_linux Improper Privilege Management

Modified
Published 18-08-2009Last modified 07-08-2024

Vulnerability summary

CVE-2009-2848 is a medium (CVSS 5.9) Improper Privilege Management vulnerability in canonical ubuntu_linux. EPSS estimates a 0.52% chance of exploitation in the next 30 days, higher than 44% of scored vulnerabilities. 2 public exploits are recorded.

Priority
Routine

Not severe (CVSS 5.9, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.9/10
010
Medium · v2.0 (NVD)
EPSS score
0.52%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits2reference

Advisory lineage

Upstream 0 · Downstream 7
DSA-1872-1DSA-1928-1RHSA-2009:1239RHSA-2009:1243RHSA-2009:1438RHSA-2009:1466

Timeline

  1. 18-08-2009
    PublishedVulnerability first disclosed.
  2. 07-08-2024
    Last modifiedVulnerability information updated.

Description

The execve function in the Linux kernel, possibly 2.6.30-rc6 and earlier, does not properly clear the current->clear_child_tid pointer, which allows local users to cause a denial of service (memory corruption) or possibly gain privileges via a clone system call with CLONE_CHILD_SETTID or CLONE_CHILD_CLEARTID enabled, which is not properly handled during thread creation and exit.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

0.52%

Chance of exploitation in the next 30 days

Percentile

44%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.52% on 05-10-2026

05-10-202604-11-2026

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
  • referenceUnverified

    Exploit Reference (openwall.com)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (openwall.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

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

Redhat3 products
Suse2 products
Vmware2 products
Canonical1 product
Fedoraproject1 product
Linux1 product
  • linux_kernel≤ 2.6.29.5 | 2.6.30 | 2.6.30:rc1 | 2.6.30:rc2 | 2.6.30:rc3 | 2.6.30:rc4 | 2.6.30:rc5 | 2.6.30:rc6
Novell1 product
Opensuse1 product

8 vendors · 12 products

References

26 links
Show all 26 references