What’s Vulnerable › Vulnerabilities

CVE-2019-6488

• Severity: high (CVSS 7.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-01-18 · updated 2026-10-14
• Weakness: CWE-404

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.

Affected products

• GNU C Library (glibc): through 2.28

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
• https://sourceware.org/bugzilla/show_bug.cgi?id=24097
• https://cert-portal.siemens.com/productcert/html/ssa-398330.html

Get alerted when CVE-2019-6488 or the next vulnerability affects your stack