CVE-2009-2847

kernel: information leak in sigaltstack

Published Aug 18, 2009 CVSS 2.0 · 4.9 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-1872-1 New Linux 2.6.18 packages fix several vulnerabilities
Debian DSA Debian DSA DSA-1928-1 New Linux 2.6.24 packages fix several vulnerabilities
EUVD EUVD EUVD-2009-2837 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.
Ubuntu USN Ubuntu USN USN-852-1 Linux kernel vulnerabilities
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Aug 7, 2024, 6:07 AM
Reserved
Aug 18, 2009, 12:00 AM
Status
Modified
Published
Aug 18, 2009, 9:00 PM
Modified
Jun 16, 2026, 11:10 PM
Severity
Moderate
Public date
Jul 31, 2009, 12:00 AM