CVE-2019-6488

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.

CVSS 3.0

7.8CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.4% chance of exploitation in the next 30 days; higher than 38% of CVEs (scores of 2026-10-25)

CWE

CWE-404

Published

2019-01-18

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• gnu:glibc

References

• http://www.securityfocus.com/bid/106671
• https://security.gentoo.org/glsa/202006-04
• https://sourceware.org/bugzilla/show_bug.cgi?id=24097
• http://www.securityfocus.com/bid/106671
• https://security.gentoo.org/glsa/202006-04

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