python
diff --git a/‎Lib/test/test_zoneinfo/data/tzif_invalid_trans_idx‎
-230 Bytes b/‎Lib/test/test_zoneinfo/data/tzif_invalid_trans_idx‎
-230 Bytes
diff --git a/‎Misc/NEWS.d/next/Library/2026-03-12-21-01-48.gh-issue-145883.lUvXcc.rst‎
Lines changed: 2 additions & 0 deletions b/‎Misc/NEWS.d/next/Library/2026-03-12-21-01-48.gh-issue-145883.lUvXcc.rst‎
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+:mod:`zoneinfo`: Fix heap buffer overflow reads from malformed TZif data.
+Found by OSS Fuzz, issues :oss-fuzz:`492245058` and :oss-fuzz:`492230068`.
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	+:mod:`zoneinfo`: Fix heap buffer overflow reads from malformed TZif data.
	`2`	+Found by OSS Fuzz, issues :oss-fuzz:`492245058` and :oss-fuzz:`492230068`.