CVE-2020-1751

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.

CVSS 3.1

7.0CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-25)

CWE

CWE-787

Published

2020-04-17

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• canonical:ubuntu_linux
• gnu:glibc
• redhat:enterprise_linux

References

• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1751
• https://security.gentoo.org/glsa/202006-04
• https://security.netapp.com/advisory/ntap-20200430-0002/
• https://sourceware.org/bugzilla/show_bug.cgi?id=25423
• https://usn.ubuntu.com/4416-1/

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