What’s Vulnerable › Vulnerabilities

CVE-1999-0199

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-10-06 · updated 2026-09-25
• Weakness: CWE-252

Description

manual/search.texi in the GNU C Library (aka glibc) before 2.2 lacks a statement about the unspecified tdelete return value upon deletion of a tree's root, which might allow attackers to access a dangling pointer in an application whose developer was unaware of a documentation update from 1999.

Affected products

• GNU C Library (glibc): before 2.2 — fixed in 2.2

How to fix

Upgrade to a fixed version: GNU C Library (glibc) 2.2. Check the vendor advisory for mitigations.

References

• https://ftp.gnu.org/gnu/glibc/glibc-2.2.tar.gz
• https://github.com/bminor/glibc/commit/2864e767053317538feafa815046fff89e5a16be#diff-94e8c502f255fdfc346df0e29fd4ef40
• https://www.cee.studio/tdelete.html
• https://ftp.gnu.org/gnu/glibc/glibc-2.2.tar.gz
• https://github.com/bminor/glibc/commit/2864e767053317538feafa815046fff89e5a16be#diff-94e8c502f255fdfc346df0e29fd4ef40
• https://www.cee.studio/tdelete.html

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