From nobody Tue Jan 25 07:11:23 2022 X-Original-To: bugs@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 21BF8198BF29 for ; Tue, 25 Jan 2022 07:11:24 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4JjdLg5Ln4z3CCc for ; Tue, 25 Jan 2022 07:11:23 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 9954625596 for ; Tue, 25 Jan 2022 07:11:23 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 20P7BNFT044952 for ; Tue, 25 Jan 2022 07:11:23 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 20P7BNse044951 for bugs@FreeBSD.org; Tue, 25 Jan 2022 07:11:23 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 261457] Fix a possible Null pointer dereference in mld_is_addr_reported() Date: Tue, 25 Jan 2022 07:11:23 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: Unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: zhou1615@umn.edu X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter attachments.created Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Bug reports List-Archive: https://lists.freebsd.org/archives/freebsd-bugs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-bugs@freebsd.org MIME-Version: 1.0 ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1643094683; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=T3+VeElvZEZiPfkIW907PEQ6MHkHmccsAgWMv38RTI4=; b=Y2sf4tiPxg/2eUjJDavWpIlssMYwWzeNXM7Qqdrr/WNiTWVlASE/SU29h+SvDyqYEMnagz cahXYBQbGEZiG1e+28ZMX4IGCYZVWOKrE/VHaPYVHuKrT5jiALE23RXOceij24PI7z/cpv pb/Ea+0/df55jkSIM1g/bNSWi3zlM3aukzvcKnaBii3NGhXmnuCwEkdirFbmo65YdSkZxI FucCetoU31Zkdzzt/uLpIVRL5DPA0NzbdmS/otdsj7+1iXCwvXsD8PGMKhifd4UfMZ2I1A HXnep4EXLrC/VC83t2LOeexQcpq32RP53W+2ALavJ3I/CCF2FDfeC1+oOuLYzw== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1643094683; a=rsa-sha256; cv=none; b=bJBEHkmMPQp6+iNLYQXTjg5zbMgVVTC5zWsNI+3Pcbjb0ARkGYN9DGJ8NKRUV4Qg7W3PDV Oxvl5QRtet2lkDcFR6J1ldx6oyd2hWTjK8pfiJt+KHC2iP/5zo+U68d7kPR4k1MVcdThpO FkSWJkhlFFv96CwTqo4c6tGxkFNl0exGz4dEExqF1h0fiU5r/yLh74Dhf8j8cYChFn9b7o rCg6yKRXCKirTBGeqjfChMUuC7b0sEHDZpDi7lSghOppy3Y34VZUaLOZqNOERx37ehq4Ds 2I2nXYQgxYKecATY+BVtFQ91CAy9+OHkn2qOI8k7aJ4z6tQFLt7wEHLolXFAxg== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D261457 Bug ID: 261457 Summary: Fix a possible Null pointer dereference in mld_is_addr_reported() Product: Base System Version: Unspecified Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: zhou1615@umn.edu Created attachment 231297 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D231297&action= =3Dedit A simple fix for this bug In mld_is_addr_reported(), the return value of mli_alloc_locked() is assign= ed to mli and there is a dereference of it after that, which could lead to NULL pointer dereference on failure of allocation. Fix this bug by adding a NULL check of mli. This bug is found by a static analyzer, please advise. --=20 You are receiving this mail because: You are the assignee for the bug.=