Red Hat Security AdvisoryRHSA-2026:52400
python3 security update
Released 2026-08-10 · Red Hat rating Important · View on Red Hat →
Fixed in
- Red Hat Enterprise Linux Server (v. 7 ELS) python3-3.6.8-21.el7_9.7, python3-libs-3.6.8-21.el7_9.7, python3-libs-3.6.8-21.el7_9.7.ppc
- Red Hat Enterprise Linux Server Optional (v. 7 ELS) python3-3.6.8-21.el7_9.7, python3-3.6.8-21.el7_9.7.ppc, python3-debug-3.6.8-21.el7_9.7 +9
Fixes 1 record
Priority MEDIUM 42
Use-after-free (UAF) was possible in the `lzma.LZMADecompressor`, `bz2.BZ2Decompressor`, and `gzip.GzipFile` when a memory allocation fails with a `MemoryError` and the decompression instance is re-used.
CVSS 4.0CRITICAL 9.1· Network · No auth · No interaction · EPSS 0.00579 · Published 2026-04-13 · Partial fix · 3.10.21, 3.11.16 +4 CWE-416
