4.9

CVE-2009-2847: linux kernel

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

Vulnerability summary

CVE-2009-2847 is a medium (CVSS 4.9) vulnerability in linux kernel. EPSS estimates a 0.94% chance of exploitation in the next 30 days, higher than 60.9% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritiseweaponized exploit

Weaponized exploit (exploit-database, 04-08-2009)

Source freshness unavailable

How is this decided?
CVSS score
4.9/10
010
Medium · v2.0 (NVD)
EPSS score
0.94%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1exploit-database

Advisory lineage

Upstream 0 · Downstream 6
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 do_sigaltstack function in kernel/signal.c in Linux kernel 2.4 through 2.4.37 and 2.6 before 2.6.31-rc5, when running on 64-bit systems, does not clear certain padding bytes from a structure, which allows local users to obtain sensitive information from the kernel stack via the sigaltstack function.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

0.94%

Chance of exploitation in the next 30 days

Percentile

61%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.94% 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

1 found
  • exploit-databaselocallinuxVerified

    Linux Kernel 2.6.31-rc5 - sigaltstack 4-Byte Stack Disclosure

    Maturity: weaponized

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

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

Linux2 products
  • kernel2.6.24.7 | 2.6.25.15
  • linux_kernel≤ 2.6.16.31 | 2.6 | 2.6.0 | 2.6.1 | 2.6.10 | 2.6.11 | 2.6.11.1 | 2.6.11.2 | 2.6.11.3 | 2.6.11.4 | 2.6.11.5 | 2.6.11.6 | 2.6.11.7 | 2.6.11.8 | 2.6.11.9 | 2.6.11.10 | 2.6.11.11 | 2.6.11.12 | 2.6.12 | 2.6.12.1 | 2.6.12.2 | 2.6.12.3 | 2.6.12.4 | 2.6.12.5 | 2.6.12.6 | 2.6.13 | 2.6.13.1 | 2.6.13.2 | 2.6.13.3 | 2.6.13.4 | 2.6.13.5 | 2.6.14 | 2.6.14.1 | 2.6.14.2 | 2.6.14.3 | 2.6.14.4 | 2.6.14.5 | 2.6.14.6 | 2.6.14.7 | 2.6.15 | 2.6.15.1 | 2.6.15.2 | 2.6.15.3 | 2.6.15.4 | 2.6.15.5 | 2.6.15.6 | 2.6.15.7 | 2.6.16 | 2.6.16.1 | 2.6.16.2 | 2.6.16.3 | 2.6.16.10 | 2.6.16.11 | 2.6.16.12 | 2.6.16.13 | 2.6.16.14 | 2.6.16.15 | 2.6.16.16 | 2.6.16.17 | 2.6.16.18 | 2.6.16.19 | 2.6.16.20 | 2.6.16.21 | 2.6.16.22 | 2.6.16.23 | 2.6.16.24 | 2.6.16.25 | 2.6.16.26 | 2.6.16.27 | 2.6.16.28 | 2.6.16.29 | 2.6.16.30 | 2.6.16.31 | 2.6.16.31:-rc1 | 2.6.16.31:-rc2 | 2.6.16.31:-rc3 | 2.6.16.31:-rc4

1 vendor · 2 products

References

21 links
Show all 21 references