DEBIAN-CVE-2017-18269

DEBIAN-CVE-2017-18269 PUBLISHED CVSS 9.800000190734863 CRITICAL

An SSE2-optimized memmove implementation for i386 in sysdeps/i386/i686/multiarch/memcpy-sse2-unaligned.S in the GNU C Library (aka glibc or libc6) 2.21 through 2.27 does not correctly perform the overlapping memory check if the source memory range spans the middle of the address space, resulting in corrupt data being produced by the copy operation. This may disclose information to context-dependent attackers, or result in a denial of service, or, possibly, code execution.

Risk Scores

CVSS v3.0

9.800000190734863

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

Affected Products

Vendor	Product	Versions
Debian:14	glibc	0, 0, 0
Debian:11	glibc	0, 0, 0
Debian:12	glibc	0, 0, 0
Debian:13	glibc	0, 0, 0

Timeline

May 18, 2018 CVE Published
Apr 28, 2026 CVE Updated

References

https://security-tracker.debian.org/tracker/CVE-2017-18269 advisory

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