From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id E4B4B3858C78; Tue, 19 Mar 2024 12:53:32 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org E4B4B3858C78 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1710852812; bh=qigoKv/FZ5RcNGwhrLClY9oaMNYvHw4zJtSAsyLitJ4=; h=From:To:Subject:Date:In-Reply-To:References:From; b=RZrKYwJ4Kb2AAdjpvwnMhYDBbrVBxsHjDa51rNU0nIas5rA/8X6O0PppMLgxiHRDN 4Iih55oW+4DPJ7tYDOlBOVnGL22RYlI2zkNEEVR+L6fQzcDaSzOjNMzFU7U/yIIi2P jGyVakQX/DFzu27+oZbvIVP0IVl8qmNUuE0vyqPo= From: "fweimer at redhat dot com" To: glibc-bugs@sourceware.org Subject: [Bug string/31509] Invalid read in __wcpncpy_avx2() via wcsxfrm() Date: Tue, 19 Mar 2024 12:53:32 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: glibc X-Bugzilla-Component: string X-Bugzilla-Version: 2.38 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: fweimer at redhat dot com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: unassigned at sourceware dot org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://sourceware.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 List-Id: https://sourceware.org/bugzilla/show_bug.cgi?id=3D31509 Florian Weimer changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |fweimer at redhat dot com --- Comment #1 from Florian Weimer --- (In reply to Sebastian Dr=C3=B6ge from comment #0) > =3D=3D139735=3D=3D Invalid read of size 32 > =3D=3D139735=3D=3D at 0x49DAA2E: __wcpncpy_avx2 (strncpy-avx2.S:85) > =3D=3D139735=3D=3D by 0x493C560: wcsxfrm_l (strxfrm_l.c:679) > =3D=3D139735=3D=3D by 0x4012A1: main (in /home/slomo/tmp/test/test) > =3D=3D139735=3D=3D Address 0x4a5c4d0 is 0 bytes inside a block of size 1= 6 alloc'd > =3D=3D139735=3D=3D at 0x484280F: malloc (vg_replace_malloc.c:442) > =3D=3D139735=3D=3D by 0x401258: main (in /home/slomo/tmp/test/test) > =3D=3D139735=3D=3D=20 This read does not case a page boundary, so overreading is harmless here. T= his seems more like a valgrind limitation. --=20 You are receiving this mail because: You are on the CC list for the bug.=