Potential buffer overflow in ns_sprintrrf TSIG handling path_CVE-2026-5435

7.3 / 10

HIGH

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

Description

The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.2 and newer fail to enforce the caller-supplied buffer length, and can result in an out-of-bounds write when printing TSIG records.

Basic Information

ID CVE-2026-5435

Source glibc

Published Apr 28, 2026 at 11:58

Modified Apr 28, 2026 at 15:21

Affected Product

Vendor The GNU C Library

Product glibc

Version 2.2

Affected Versions The GNU C Library glibc 2.2

CWE Classification

CWE-787

References

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    "lastseen": "",
    "description": "The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.2 and newer fail to enforce the caller-supplied buffer length, and can result in an out-of-bounds write when printing TSIG records.",
    "published": "2026-04-28T11:58:54.962Z",
    "modified": "2026-04-28T15:21:13.800Z",
    "type": "cve",
    "title": "Potential buffer overflow in ns_sprintrrf TSIG handling path",
    "source": "glibc",
    "references": "https://sourceware.org/bugzilla/show_bug.cgi?id=34033\nhttps://inbox.sourceware.org/libc-announce/[email protected]/T/#u",
    "id": "CVE-2026-5435",
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