From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 12BC63858D20; Thu, 14 Sep 2023 09:56:30 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 12BC63858D20 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1694685390; bh=nAqoo+RdSbpXOckQH1z+2tjczr/dFNDCGAT050zIVXw=; h=From:To:Subject:Date:In-Reply-To:References:From; b=o4XGEUIvSITVO+7xpc02O0fQRdv/vMaPE8dR/olJisnO4+yQm3FKqqzctxq2ckCYz IaKSVEt48/iCsWVOmpFXgr4AXgYhFdyKCDTmtfy11uqWF/qQr1UYszZv69ShiPuA+J pTURqmhMHkDB/8nnuGHsZ9h0YseS8+8gik0GSFtM= From: "siddhesh at sourceware dot org" To: glibc-bugs@sourceware.org Subject: [Bug network/30843] potential use-after-free in getcanonname (CVE-2023-4806) Date: Thu, 14 Sep 2023 09:56:29 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: glibc X-Bugzilla-Component: network X-Bugzilla-Version: unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: siddhesh at sourceware dot org X-Bugzilla-Status: ASSIGNED X-Bugzilla-Resolution: X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: siddhesh at sourceware dot org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: security+ X-Bugzilla-Changed-Fields: 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=3D30843 --- Comment #3 from Siddhesh Poyarekar --- (In reply to Xi Ruoyao from comment #2) > nss_wins from samba implements _nss_wins_gethostbyname_r and > _nss_wins_gethostbyname2_r, but not _nss_wins_gethostbyname3_r. Is it > problematic? I should probably update the description; presence of a _nss_wins_getcanonname_r hook is also necessary (that's the hook that dereferences the freed memory after all) to trigger the user-after-free. T= he nss wins plugin in samba doesn't seem to have that hook. --=20 You are receiving this mail because: You are on the CC list for the bug.=