CVE-2019-19602
Medium
Description
fpregs_state_valid in arch/x86/include/asm/fpu/internal.h in the Linux kernel before 5.4.2, when GCC 9 is used, allows context-dependent attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact because of incorrect fpu_fpregs_owner_ctx caching, as demonstrated by mishandling of signal-based non-cooperative preemption in Go 1.14 prereleases on amd64, aka CID-59c4bd853abc.
SeverityMedium
CVSS6.1
Exploit probability—
Product
Linux Kernel
PublishedDec 5, 2019
First seenDec 5, 2019
How to fix
Update
- linux linux_kernel5.4.2 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v < 5.4.2 | 5.4.2 |
| canonical ubuntu_linux | 18.04, 19.10 | — |
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