On the x86-64 architecture, the GNU C Library (aka glibc) before 2.31 fails to ignore the LD_PREFER_MAP_32BIT_EXEC environment variable during program execution after a security transition, allowing local attackers to restrict the possible mapping addresses for loaded libraries and thus bypass ASLR for a setuid program.
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History
Wed, 14 Oct 2026 07:30:00 +0000
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Status: PUBLISHED
Assigner: mitre
Published: 2019-11-19T00:00:00.000Z
Updated: 2026-10-14T06:54:55.184Z
Reserved: 2019-11-19T00:00:00.000Z
Link: CVE-2019-19126
No data.
Status : Modified
Published: 2019-11-19T22:15:11.427
Modified: 2026-10-14T07:16:50.737
Link: CVE-2019-19126