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Vulnerability record · CVE-2018-11237 · published 18 May 2018

CVE-2018-11237: Gnu glibc out-of-bounds write vulnerability

Gnu · Glibc

An AVX-512-optimized implementation of the mempcpy function in the GNU C Library (aka glibc or libc6) 2.27 and earlier may write data beyond the target buffer, leading to a buffer overflow in __mempcpy_avx512_no_vzeroupper.

7.8 CVSS 3.1 High EPSS 0.88% · top 42.5% CWE-787 · Out-of-bounds write
7.8CVSS 3.1 base score, v2 4.6
0.88%EPSS exploitation probability, 30 days
NoNot in CISA KEV
10Affected product versions listed by NVD
18References
17 Jun 2026Last modified by NVD

Description

An AVX-512-optimized implementation of the mempcpy function in the GNU C Library (aka glibc or libc6) 2.27 and earlier may write data beyond the target buffer, leading to a buffer overflow in __mempcpy_avx512_no_vzeroupper.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

10 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/104256 Broken Link
https://access.redhat.com/errata/RHBA-2019:0327 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3092 Third Party Advisory
https://security.netapp.com/advisory/ntap-20190329-0001/ Broken Link
https://security.netapp.com/advisory/ntap-20190401-0001/ Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=23196 Issue TrackingPatchThird Party Advisory
https://usn.ubuntu.com/4416-1/ Third Party Advisory
https://www.exploit-db.com/exploits/44750/ Broken LinkThird Party AdvisoryVDB Entry
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html PatchThird Party Advisory
http://www.securityfocus.com/bid/104256 Broken Link
https://access.redhat.com/errata/RHBA-2019:0327 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3092 Third Party Advisory
https://security.netapp.com/advisory/ntap-20190329-0001/ Broken Link
https://security.netapp.com/advisory/ntap-20190401-0001/ Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=23196 Issue TrackingPatchThird Party Advisory
https://usn.ubuntu.com/4416-1/ Third Party Advisory
https://www.exploit-db.com/exploits/44750/ Broken LinkThird Party AdvisoryVDB Entry
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html PatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-11237), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.