CVE-2019-19602
kernel: cached use of fpu_fpregs_owner_ctx in arch/x86/include/asm/fpu/internal.h can lead to DoS
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · November 26, 2019
Updated · June 28, 2026
Description
A flaw was found in the Linux kernel. When compiled with GCC 9, a vector register corruption occurs on return from a signal handler where the top page of the signal stack had not yet been paged in which can allow a local attacker with special user privilege (or root) to leak kernel internal information. The highest threat from this vulnerability is to data confidentiality.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 6.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
CWE-672 · Operation on a Resource after Expiration or Release