commit: b06dd757b0e0832c7091278fe5b0f7d88211eddd Author: stefson <herrtimson <AT> yahoo <DOT> de> AuthorDate: Mon Oct 9 20:30:07 2017 +0000 Commit: Anthony G. Basile <blueness <AT> gentoo <DOT> org> CommitDate: Mon Oct 9 20:50:01 2017 +0000 URL: https://gitweb.gentoo.org/proj/musl.git/commit/?id=b06dd757
sys-devel/gcc: backport security-fix for #620492 sys-devel/gcc/Manifest | 6 +- .../files/gcc-5.4.0-pr71696-CVE-2016-6131.patch | 252 +++++++++++++++++++++ sys-devel/gcc/gcc-5.4.0-r3.ebuild | 1 + 3 files changed, 255 insertions(+), 4 deletions(-) diff --git a/sys-devel/gcc/Manifest b/sys-devel/gcc/Manifest index 1219e4e..15aa207 100644 --- a/sys-devel/gcc/Manifest +++ b/sys-devel/gcc/Manifest @@ -22,6 +22,7 @@ AUX gcc-4.9.3-secure-plt.patch 1478 SHA256 b9435e19c3193e872bfdce8f635755655cf6e AUX gcc-4.9.3-tree-vect-data-refs-correctness.patch 315 SHA256 904ae5ce2ecd5a2f7786c54d148a7562d0bb6f51fe60761038c2f57b8cf70356 SHA512 88d93c061ef72035522270ab60c8c2ec04e2fa2d69763f45b9eab0c37b19c23920484358d7556ad885775071ac04cf94684a2cd8ed93418d5f0c54ac3a045c9d WHIRLPOOL 2b9c281401abc111d53467c51b6238c6f4c430a73d8833f161766f973138ffe3b4fa1ffe5cc5813b5e2f8a81dee2cdcaaff2b9a8f8e13089f993f3ab3d69ccbd AUX gcc-5.4.0-pr68470.patch 2012 SHA256 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SHA512 a15fba8bf2ff02bdeca54d6f186bfa08c1079c6a8ba0a3beef154483ce5c1b8c497e7ffeec32371968f0037e0ff8384609eb0c367d0155a4e5a7eef8aad084d5 WHIRLPOOL 39d008aad06f7621e4e5db15f5e85a59e583b43f8d247029bd4944466bb60a9795bda157d185c45c329294078e282703a243aad5c468d90c77665dd6336870d4 @@ -54,8 +55,6 @@ DIST gcc-5.4.0-patches-1.4.tar.bz2 28425 SHA256 039b88a939c3b90777fb94c58980cbcf DIST gcc-5.4.0-piepatches-v0.6.5.tar.bz2 14551 SHA256 495eb9110244dac17408cd0eb6977a593577eeb0437e72b60339b8ec394f2fb0 SHA512 4890f0713d261982ab81a20f93c5f65193aa1dfa171e3f9e5867f0b80ec7c1e76c5a997b1a4e6f47f8ce36af54ac91125c5bff8bf6d971b7d77c65a57a40a3c0 WHIRLPOOL 13b74b1ca75cc94f9624fe1b52221a953962c918c2cb932302a3078b6deba4f3e501647ad8a2915edef6301e64c820ed612a6fbb9e1178cf1711fe0045686969 DIST gcc-5.4.0-uclibc-patches-1.0.tar.bz2 3731 SHA256 a3145faa6c81c0753ba754b735834c38987c356dadaa7c4a625c738e374604b5 SHA512 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SHA512 02c60e54527c7adf584798d5251f8a0b80c93d5deafce82501b2c28e6692e0bd783927bbfc4bc527a863c0cccc025150a34740a9e29badb02d4b48e56a8aba90 WHIRLPOOL 136b282c6957877d2f463d83740fa65a4e7a346ac94e4baabea25cec41ae307f34409b1e518a22927821d564b8634a48978dc8e1d0b988999e924adcbf3f5cc9 DIST gcc-7.1.0-patches-1.1.tar.bz2 6746 SHA256 39d4a0c659cc361bd3c71fdc9b793bccfa2bce06ede65ac49b805d1e236fcc8e SHA512 1bf95a505dc6c37bf6924bb69fd0670c8f3355b6690c94edf4a4248649accbd426575b40cb7a473dfb0ae09a924b05619e5c633384bae0293edb670cfd0d3a30 WHIRLPOOL 9682649fff62b56683637d25a58d11928342d99e52b2269f42369fd1d691208a7645802cb0d609ac30e20593ecdceb8cb1ab9b216963afe14db1b17ed43d5eb7 @@ -63,8 +62,7 @@ DIST gcc-7.1.0.tar.bz2 84303533 SHA256 8a8136c235f64c6fef69cac0d73a46a1a09bb2507 DIST gcc-7.2.0.tar.xz 62312628 SHA256 1cf7adf8ff4b5aa49041c8734bbcf1ad18cc4c94d0029aae0f4e48841088479a SHA512 f853cd6530b4055d8d8289da74687cb4c6d5f363598d386332d31852b581bac76c3adb7d61889edec3b779f63d8646f0122840f12965ce4a4389ba535dbbb6e1 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31c11b6d6394e7c7216f0ba1fd7581a5a18672294773c90b3850042be483558829ea942eb4692486f7b050b67c1884ca83e1c10e88023e8ff4e1fe076d13f2d3 WHIRLPOOL b500acb946855d3adc5ad7297a520bb14fdd4120f0997065c2aaa8008b889fdfeee08fd0b395264c14260cf13e6a7aaf973378d38174050068b69cd6d24c9fa6 diff --git a/sys-devel/gcc/files/gcc-5.4.0-pr71696-CVE-2016-6131.patch b/sys-devel/gcc/files/gcc-5.4.0-pr71696-CVE-2016-6131.patch new file mode 100644 index 0000000..b16edbb --- /dev/null +++ b/sys-devel/gcc/files/gcc-5.4.0-pr71696-CVE-2016-6131.patch @@ -0,0 +1,252 @@ +From b3f6b32165d3f437bd0ac6269c3c499b68ecf036 Mon Sep 17 00:00:00 2001 +From: law <law@138bc75d-0d04-0410-961f-82ee72b054a4> +Date: Thu, 4 Aug 2016 16:53:18 +0000 +Subject: [PATCH] Fix for PR71696 in Libiberty Demangler +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +[BZ #71696] -- https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71696 + +2016-08-04 Marcel Böhme <[email protected]> + + PR c++/71696 + * cplus-dem.c: Prevent infinite recursion when there is a cycle + in the referencing of remembered mangled types. + (work_stuff): New stack to keep track of the remembered mangled + types that are currently being processed. + (push_processed_type): New method to push currently processed + remembered type onto the stack. + (pop_processed_type): New method to pop currently processed + remembered type from the stack. + (work_stuff_copy_to_from): Copy values of new variables. + (delete_non_B_K_work_stuff): Free stack memory. + (demangle_args): Push/Pop currently processed remembered type. + (do_type): Do not demangle a cyclic reference and push/pop + referenced remembered type. + +cherry-picked from commit of +git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@239143 138bc75d-0d04-0410-961f-82ee72b054a4 + +Upstream-Status: Backport [master] +CVE: CVE-2016-6131 +Signed-off-by: Yuanjie Huang <[email protected]> +--- + libiberty/ChangeLog | 17 ++++++++ + libiberty/cplus-dem.c | 78 ++++++++++++++++++++++++++++++++--- + libiberty/testsuite/demangle-expected | 18 ++++++++ + 3 files changed, 108 insertions(+), 5 deletions(-) + +diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog +index 9859ad3..7939480 100644 +--- a/libiberty/ChangeLog ++++ b/libiberty/ChangeLog +@@ -1,3 +1,20 @@ ++2016-08-04 Marcel Böhme <[email protected]> ++ ++ PR c++/71696 ++ * cplus-dem.c: Prevent infinite recursion when there is a cycle ++ in the referencing of remembered mangled types. ++ (work_stuff): New stack to keep track of the remembered mangled ++ types that are currently being processed. ++ (push_processed_type): New method to push currently processed ++ remembered type onto the stack. ++ (pop_processed_type): New method to pop currently processed ++ remembered type from the stack. ++ (work_stuff_copy_to_from): Copy values of new variables. ++ (delete_non_B_K_work_stuff): Free stack memory. ++ (demangle_args): Push/Pop currently processed remembered type. ++ (do_type): Do not demangle a cyclic reference and push/pop ++ referenced remembered type. ++ + 2016-06-03 Release Manager + + * GCC 5.4.0 released. +diff --git a/libiberty/cplus-dem.c b/libiberty/cplus-dem.c +index 7514e57..f21e630 100644 +--- a/libiberty/cplus-dem.c ++++ b/libiberty/cplus-dem.c +@@ -144,6 +144,9 @@ struct work_stuff + string* previous_argument; /* The last function argument demangled. */ + int nrepeats; /* The number of times to repeat the previous + argument. */ ++ int *proctypevec; /* Indices of currently processed remembered typevecs. */ ++ int proctypevec_size; ++ int nproctypes; + }; + + #define PRINT_ANSI_QUALIFIERS (work -> options & DMGL_ANSI) +@@ -435,6 +438,10 @@ iterate_demangle_function (struct work_stuff *, + + static void remember_type (struct work_stuff *, const char *, int); + ++static void push_processed_type (struct work_stuff *, int); ++ ++static void pop_processed_type (struct work_stuff *); ++ + static void remember_Btype (struct work_stuff *, const char *, int, int); + + static int register_Btype (struct work_stuff *); +@@ -1301,6 +1308,10 @@ work_stuff_copy_to_from (struct work_stuff *to, struct work_stuff *from) + memcpy (to->btypevec[i], from->btypevec[i], len); + } + ++ if (from->proctypevec) ++ to->proctypevec = ++ XDUPVEC (int, from->proctypevec, from->proctypevec_size); ++ + if (from->ntmpl_args) + to->tmpl_argvec = XNEWVEC (char *, from->ntmpl_args); + +@@ -1329,11 +1340,17 @@ delete_non_B_K_work_stuff (struct work_stuff *work) + /* Discard the remembered types, if any. */ + + forget_types (work); +- if (work -> typevec != NULL) ++ if (work->typevec != NULL) + { +- free ((char *) work -> typevec); +- work -> typevec = NULL; +- work -> typevec_size = 0; ++ free ((char *) work->typevec); ++ work->typevec = NULL; ++ work->typevec_size = 0; ++ } ++ if (work->proctypevec != NULL) ++ { ++ free (work->proctypevec); ++ work->proctypevec = NULL; ++ work->proctypevec_size = 0; + } + if (work->tmpl_argvec) + { +@@ -3552,6 +3569,8 @@ static int + do_type (struct work_stuff *work, const char **mangled, string *result) + { + int n; ++ int i; ++ int is_proctypevec; + int done; + int success; + string decl; +@@ -3564,6 +3583,7 @@ do_type (struct work_stuff *work, const char **mangled, string *result) + + done = 0; + success = 1; ++ is_proctypevec = 0; + while (success && !done) + { + int member; +@@ -3616,8 +3636,15 @@ do_type (struct work_stuff *work, const char **mangled, string *result) + success = 0; + } + else ++ for (i = 0; i < work->nproctypes; i++) ++ if (work -> proctypevec [i] == n) ++ success = 0; ++ ++ if (success) + { +- remembered_type = work -> typevec[n]; ++ is_proctypevec = 1; ++ push_processed_type (work, n); ++ remembered_type = work->typevec[n]; + mangled = &remembered_type; + } + break; +@@ -3840,6 +3867,9 @@ do_type (struct work_stuff *work, const char **mangled, string *result) + string_delete (result); + string_delete (&decl); + ++ if (is_proctypevec) ++ pop_processed_type (work); ++ + if (success) + /* Assume an integral type, if we're not sure. */ + return (int) ((tk == tk_none) ? tk_integral : tk); +@@ -4252,6 +4282,41 @@ do_arg (struct work_stuff *work, const char **mangled, string *result) + } + + static void ++push_processed_type (struct work_stuff *work, int typevec_index) ++{ ++ if (work->nproctypes >= work->proctypevec_size) ++ { ++ if (!work->proctypevec_size) ++ { ++ work->proctypevec_size = 4; ++ work->proctypevec = XNEWVEC (int, work->proctypevec_size); ++ } ++ else ++ { ++ if (work->proctypevec_size < 16) ++ /* Double when small. */ ++ work->proctypevec_size *= 2; ++ else ++ { ++ /* Grow slower when large. */ ++ if (work->proctypevec_size > (INT_MAX / 3) * 2) ++ xmalloc_failed (INT_MAX); ++ work->proctypevec_size = (work->proctypevec_size * 3 / 2); ++ } ++ work->proctypevec ++ = XRESIZEVEC (int, work->proctypevec, work->proctypevec_size); ++ } ++ } ++ work->proctypevec [work->nproctypes++] = typevec_index; ++} ++ ++static void ++pop_processed_type (struct work_stuff *work) ++{ ++ work->nproctypes--; ++} ++ ++static void + remember_type (struct work_stuff *work, const char *start, int len) + { + char *tem; +@@ -4515,10 +4580,13 @@ demangle_args (struct work_stuff *work, const char **mangled, + { + string_append (declp, ", "); + } ++ push_processed_type (work, t); + if (!do_arg (work, &tem, &arg)) + { ++ pop_processed_type (work); + return (0); + } ++ pop_processed_type (work); + if (PRINT_ARG_TYPES) + { + string_appends (declp, &arg); +diff --git a/libiberty/testsuite/demangle-expected b/libiberty/testsuite/demangle-expected +index 1d8b771..d690b23 100644 +--- a/libiberty/testsuite/demangle-expected ++++ b/libiberty/testsuite/demangle-expected +@@ -4429,3 +4429,21 @@ __vt_90000000000cafebabe + + _Z80800000000000000000000 + _Z80800000000000000000000 ++# ++# Tests write access violation PR70926 ++ ++0__Ot2m02R5T0000500000 ++0__Ot2m02R5T0000500000 ++# ++ ++0__GT50000000000_ ++0__GT50000000000_ ++# ++ ++__t2m05B500000000000000000_ ++__t2m05B500000000000000000_ ++# ++# Tests stack overflow PR71696 ++ ++__10%0__S4_0T0T0 ++%0<>::%0(%0<>) +-- +2.9.3 + + diff --git a/sys-devel/gcc/gcc-5.4.0-r3.ebuild b/sys-devel/gcc/gcc-5.4.0-r3.ebuild index 5696f21..f147ac9 100644 --- a/sys-devel/gcc/gcc-5.4.0-r3.ebuild +++ b/sys-devel/gcc/gcc-5.4.0-r3.ebuild @@ -48,6 +48,7 @@ src_prepare() { epatch "${FILESDIR}"/${PN}-4.9.3-tree-vect-data-refs-correctness.patch epatch "${FILESDIR}"/${PN}-5.4.0-pr68470.patch epatch "${FILESDIR}"/${PN}-5.4.0-pr70473.patch + epatch "${FILESDIR}"/${PN}-5.4.0-pr71696-CVE-2016-6131.patch if use elibc_musl || [[ ${CATEGORY} = cross-*-musl ]]; then epatch "${FILESDIR}"/4.9.4/gthread.patch
