An out-of-bounds write vulnerability was found in glibc before 2.31 when handling signal trampolines on PowerPC. Specifically, the backtrace function did not properly check the array bounds when storing the frame address, resulting in a denial of service or potential code execution. The highest threat from this vulnerability is to system availability.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1751 Issue Tracking, Patch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1751 Issue Tracking, Patch, Third Party Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.0 · gnu, redhat, canonicalNVD modified 2026-10-14 09:17
Affected (CPE criteria) 5
cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
References 11
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1751 Issue Tracking, Patch, Third Party Advisory
- https://security.gentoo.org/glsa/202006-04 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200430-0002/ Third Party Advisory
- https://sourceware.org/bugzilla/show_bug.cgi?id=25423 Issue Tracking, Third Party Advisory
- https://usn.ubuntu.com/4416-1/ Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1751 Issue Tracking, Patch, Third Party Advisory
- https://security.gentoo.org/glsa/202006-04 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200430-0002/ Third Party Advisory
- https://sourceware.org/bugzilla/show_bug.cgi?id=25423 Issue Tracking, Third Party Advisory
- https://usn.ubuntu.com/4416-1/ Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html