vulnerability
Red Hat: CVE-2021-45960: Large number of prefixed XML attributes on a single tag can crash libexpat (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 9 | (AV:N/AC:L/Au:S/C:C/I:C/A:C) | Jan 1, 2022 | Mar 17, 2022 | Aug 11, 2025 |
Severity
9
CVSS
(AV:N/AC:L/Au:S/C:C/I:C/A:C)
Published
Jan 1, 2022
Added
Mar 17, 2022
Modified
Aug 11, 2025
Description
In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) places in the storeAtts function in xmlparse.c can lead to realloc misbehavior (e.g., allocating too few bytes, or only freeing memory).
Solutions
no-fix-redhat-rpm-packageredhat-upgrade-expatredhat-upgrade-expat-debuginforedhat-upgrade-expat-debugsourceredhat-upgrade-expat-develredhat-upgrade-expat-static
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