CVE-2019-19602

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Summary

CVECVE-2019-19602
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-12-05 14:15:00 UTC
Updated2020-08-24 17:37:00 UTC
Descriptionfpregs_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.

Risk And Classification

Problem Types: CWE-119

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Canonical Ubuntu Linux 18.04 All All All
Operating System Canonical Ubuntu Linux 19.10 All All All
Operating System Canonical Ubuntu Linux 18.04 All All All
Operating System Canonical Ubuntu Linux 19.10 All All All
Operating System Linux Linux Kernel All All All All
Operating System Linux Linux Kernel All All All All

References

ReferenceSourceLinkTags
runtime: memory corruption on Linux 5.3.x from async preemption · Issue #35777 · golang/go · GitHub MISC github.com Issue Tracking, Third Party Advisory
USN-4284-1: Linux kernel vulnerabilities | Ubuntu security notices | Ubuntu UBUNTU usn.ubuntu.com Third Party Advisory
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.2 MISC cdn.kernel.org Release Notes, Vendor Advisory
December 2019 Linux Kernel Vulnerabilities in NetApp Products | NetApp Product Security CONFIRM security.netapp.com Third Party Advisory
x86/fpu: Don't cache access to fpu_fpregs_owner_ctx · torvalds/linux@59c4bd8 · GitHub MISC github.com Exploit, Third Party Advisory
205663 – AVX register corruption from signal delivery MISC bugzilla.kernel.org Issue Tracking, Third Party Advisory
kernel/git/torvalds/linux.git - Linux kernel source tree MISC git.kernel.org Exploit, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 159684 Oracle Enterprise Linux Security Update for kernel (ELSA-2020-4431)
  • 940256 AlmaLinux Security Update for kernel (ALSA-2020:4431)
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