CVE-2019-6488

glibc: Incorrect attempt to use a 64-bit register for size_t in assembly codes results in segmentation fault

Published Jan 18, 2019 CVSS 3.0 · 7.8 High EPSS < 1% KEV · Not listed
Description
The string component in the GNU C Library (aka glibc or libc6) through 2.28, when running on the x32 architecture, incorrectly attempts to use a 64-bit register for size_t in assembly codes, which can lead to a segmentation fault or possibly unspecified other impact, as demonstrated by a crash in __memmove_avx_unaligned_erms in sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S during a memcpy.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2019-16048 The string component in the GNU C Library (aka glibc or libc6) through 2.28, when running on the x32 architecture, incorrectly attempts to use a 64-bit register for size_t in assembly codes, which can lead to a segmentation fault or possibly unspecified other impact, as demonstrated by a crash in __memmove_avx_unaligned_erms in sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S during a memcpy.
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Oct 14, 2026, 6:49 AM
Reserved
Jan 18, 2019, 12:00 AM
Status
Modified
Published
Jan 18, 2019, 7:29 PM
Modified
Oct 14, 2026, 7:16 AM
Severity
Moderate
Public date
Jan 16, 2019, 12:00 AM