Source: https://sourceware.org/git/glibc.git Tracking -- https://sourceware.org/bugzilla/show_bug.cgi?id=28011
Backported upstream commit 5adda61f62b77384718b4c0d8336ade8f2b4b35c to glibc-2.33 source. Upstream-Status: Backport [https://sourceware.org/git/?p=glibc.git;a=commit;h=5adda61f62b77384718b4c0d8336ade8f2b4b35c] Signed-off-by: Vinay Kumar <vinay.m.e...@gmail.com> --- .../glibc/glibc/CVE-2021-35942.patch | 44 +++++++++++++++++++ meta/recipes-core/glibc/glibc_2.33.bb | 1 + 2 files changed, 45 insertions(+) create mode 100644 meta/recipes-core/glibc/glibc/CVE-2021-35942.patch diff --git a/meta/recipes-core/glibc/glibc/CVE-2021-35942.patch b/meta/recipes-core/glibc/glibc/CVE-2021-35942.patch new file mode 100644 index 0000000000..5cae1bc91c --- /dev/null +++ b/meta/recipes-core/glibc/glibc/CVE-2021-35942.patch @@ -0,0 +1,44 @@ +From 5adda61f62b77384718b4c0d8336ade8f2b4b35c Mon Sep 17 00:00:00 2001 +From: Andreas Schwab <sch...@linux-m68k.org> +Date: Fri, 25 Jun 2021 15:02:47 +0200 +Subject: [PATCH] wordexp: handle overflow in positional parameter number (bug + 28011) + +Use strtoul instead of atoi so that overflow can be detected. + +Upstream-Status: Backport [https://sourceware.org/git/?p=glibc.git;a=commit;h=5adda61f62b77384718b4c0d8336ade8f2b4b35c] +CVE: CVE-2021-35942 +Signed-off-by: Vinay Kumar <vinay.m.e...@gmail.com> +--- + posix/wordexp-test.c | 1 + + posix/wordexp.c | 2 +- + 2 files changed, 2 insertions(+), 1 deletion(-) + +diff --git a/posix/wordexp-test.c b/posix/wordexp-test.c +index f93a546d7e..9df02dbbb3 100644 +--- a/posix/wordexp-test.c ++++ b/posix/wordexp-test.c +@@ -183,6 +183,7 @@ struct test_case_struct + { 0, NULL, "$var", 0, 0, { NULL, }, IFS }, + { 0, NULL, "\"\\n\"", 0, 1, { "\\n", }, IFS }, + { 0, NULL, "", 0, 0, { NULL, }, IFS }, ++ { 0, NULL, "${1234567890123456789012}", 0, 0, { NULL, }, IFS }, + + /* Flags not already covered (testit() has special handling for these) */ + { 0, NULL, "one two", WRDE_DOOFFS, 2, { "one", "two", }, IFS }, +diff --git a/posix/wordexp.c b/posix/wordexp.c +index bcbe96e48d..1f3b09f721 100644 +--- a/posix/wordexp.c ++++ b/posix/wordexp.c +@@ -1399,7 +1399,7 @@ envsubst: + /* Is it a numeric parameter? */ + else if (isdigit (env[0])) + { +- int n = atoi (env); ++ unsigned long n = strtoul (env, NULL, 10); + + if (n >= __libc_argc) + /* Substitute NULL. */ +-- +2.17.1 + diff --git a/meta/recipes-core/glibc/glibc_2.33.bb b/meta/recipes-core/glibc/glibc_2.33.bb index e9f01a14c5..abb01f8468 100644 --- a/meta/recipes-core/glibc/glibc_2.33.bb +++ b/meta/recipes-core/glibc/glibc_2.33.bb @@ -58,6 +58,7 @@ SRC_URI = "${GLIBC_GIT_URI};branch=${SRCBRANCH};name=glibc \ file://0030-powerpc-Do-not-ask-compiler-for-finding-arch.patch \ file://mte-backports.patch \ file://CVE-2021-33574.patch \ + file://CVE-2021-35942.patch \ " S = "${WORKDIR}/git" B = "${WORKDIR}/build-${TARGET_SYS}" -- 2.31.1
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