On Wed, 2021-10-27 at 03:47 -0700, Pgowda wrote: > Backport from binutils-2_37 > > Signed-off-by: Pgowda <[email protected]> > --- > .../binutils/binutils-2.36.inc | 1 + > .../binutils/0017-CVE-2021-3530.patch | 97 +++++++++++++++++++ > 2 files changed, 98 insertions(+) > create mode 100644 meta/recipes-devtools/binutils/binutils/0017-CVE- > 2021-3530.patch > > diff --git a/meta/recipes-devtools/binutils/binutils-2.36.inc > b/meta/recipes-devtools/binutils/binutils-2.36.inc > index 9d770db5a8..981692e457 100644 > --- a/meta/recipes-devtools/binutils/binutils-2.36.inc > +++ b/meta/recipes-devtools/binutils/binutils-2.36.inc > @@ -44,5 +44,6 @@ SRC_URI = "\ > file://0001-CVE-2021-20197.patch \ > file://0002-CVE-2021-20197.patch \ > file://0003-CVE-2021-20197.patch \ > + file://0017-CVE-2021-3530.patch \ > " > S = "${WORKDIR}/git" > diff --git a/meta/recipes-devtools/binutils/binutils/0017-CVE-2021- > 3530.patch b/meta/recipes-devtools/binutils/binutils/0017-CVE-2021- > 3530.patch > new file mode 100644 > index 0000000000..f1934aa600 > --- /dev/null > +++ b/meta/recipes-devtools/binutils/binutils/0017-CVE-2021-3530.patch > @@ -0,0 +1,97 @@ > +From 25162c795b1a2becf936bb3581d86a307ea491eb Mon Sep 17 00:00:00 2001 > +From: Nick Clifton <[email protected]> > +Date: Thu, 15 Jul 2021 16:51:56 +0100 > +Subject: [PATCH] Fix a stack exhaustion problem in the Rust demangling > code in > + the libiberty library. > + > + PR 99935 > + * rust-demangle.c: Add recursion limit.
This needs a CVE tag, your Signed-off-by and Upstream-Status. Please see: https://wiki.yoctoproject.org/wiki/Security#Patch_name_convention_and_commit_message Also, it looks like this will break MinGW builds and would also need: https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=999566402e3 Please check. Thanks, Anuj > +--- > + libiberty/ChangeLog | 5 +++++ > + libiberty/rust-demangle.c | 31 +++++++++++++++++++++++++------ > + 2 files changed, 30 insertions(+), 6 deletions(-) > + > +diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog > +index bc1b35b97c4..8e39fd28eba 100644 > +--- a/libiberty/ChangeLog > ++++ b/libiberty/ChangeLog > +@@ -1,3 +1,8 @@ > ++2021-07-15 Nick Clifton <[email protected]> > ++ > ++ PR 99935 > ++ * rust-demangle.c: Add recursion limit. > ++ > + 2021-01-04 Martin Liska <[email protected]> > + > + * strverscmp.c: Convert to utf8 from iso8859. > +diff --git a/libiberty/rust-demangle.c b/libiberty/rust-demangle.c > +index 449941b56dc..df09b7b8fdd 100644 > +--- a/libiberty/rust-demangle.c > ++++ b/libiberty/rust-demangle.c > +@@ -74,6 +74,12 @@ struct rust_demangler > + /* Rust mangling version, with legacy mangling being -1. */ > + int version; > + > ++ /* Recursion depth. */ > ++ uint recursion; > ++ /* Maximum number of times demangle_path may be called > recursively. */ > ++#define RUST_MAX_RECURSION_COUNT 1024 > ++#define RUST_NO_RECURSION_LIMIT ((uint) -1) > ++ > + uint64_t bound_lifetime_depth; > + }; > + > +@@ -671,6 +677,15 @@ demangle_path (struct rust_demangler *rd > + if (rdm->errored) > + return; > + > ++ if (rdm->recursion != RUST_NO_RECURSION_LIMIT) > ++ { > ++ ++ rdm->recursion; > ++ if (rdm->recursion > RUST_MAX_RECURSION_COUNT) > ++ /* FIXME: There ought to be a way to report > ++ that the recursion limit has been reached. */ > ++ goto fail_return; > ++ } > ++ > + switch (tag = next (rdm)) > + { > + case 'C': > +@@ -688,10 +703,7 @@ demangle_path (struct rust_demangler *rd > + case 'N': > + ns = next (rdm); > + if (!ISLOWER (ns) && !ISUPPER (ns)) > +- { > +- rdm->errored = 1; > +- return; > +- } > ++ goto fail_return; > + > + demangle_path (rdm, in_value); > + > +@@ -776,9 +788,15 @@ demangle_path (struct rust_demangler *rd > + } > + break; > + default: > +- rdm->errored = 1; > +- return; > ++ goto fail_return; > + } > ++ goto pass_return; > ++ > ++ fail_return: > ++ rdm->errored = 1; > ++ pass_return: > ++ if (rdm->recursion != RUST_NO_RECURSION_LIMIT) > ++ -- rdm->recursion; > + } > + > + static void > +@@ -1317,6 +1335,7 @@ rust_demangle_callback (const char *mang > + rdm.skipping_printing = 0; > + rdm.verbose = (options & DMGL_VERBOSE) != 0; > + rdm.version = 0; > ++ rdm.recursion = (options & DMGL_NO_RECURSE_LIMIT) ? > RUST_NO_RECURSION_LIMIT : 0; > + rdm.bound_lifetime_depth = 0; > + > + /* Rust symbols always start with _R (v0) or _ZN (legacy). */
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