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Critical severity9.8NVD Advisory· Published May 18, 2018· Updated Jun 17, 2026

CVE-2017-18269

CVE-2017-18269

Description

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.

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Affected products

13

Patches

Vulnerability mechanics

References

4

News mentions

0

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