CVE-2019-19602

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.

Weakness classification

• CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

Primary references

• cve@mitre.org — Issue Tracking, Third Party Advisory
• cve@mitre.org — Release Notes, Vendor Advisory
• cve@mitre.org — Exploit, Vendor Advisory
• cve@mitre.org — Issue Tracking, Third Party Advisory
• cve@mitre.org — Exploit, Third Party Advisory
• cve@mitre.org — Third Party Advisory
• cve@mitre.org — Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Release Notes, Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Exploit, Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory