VULNERABILITY INTELLIGENCE
CVE-2009-2847
CVSS score4.9 MEDIUM
EPSS probability0.94%
CISA KEVNot currently listed
Published2009-08-18
Last modified2026-06-16
CVSS vectorAV:L/AC:L/Au:N/C:C/I:N/A:N
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.