From: Vijay Anusuri <vanus...@mvista.com> import patches from ubuntu to fix CVE-2023-2602 CVE-2023-2603
Upstream-Status: Backport [import from ubuntu https://git.launchpad.net/ubuntu/+source/libcap2/tree/debian/patches?h=ubuntu/focal-security Upstream commit https://git.kernel.org/pub/scm/libs/libcap/libcap.git/commit/?id=bc6b36682f188020ee4770fae1d41bde5b2c97bb & https://git.kernel.org/pub/scm/libs/libcap/libcap.git/commit/?id=422bec25ae4a1ab03fd4d6f728695ed279173b18] Signed-off-by: Vijay Anusuri <vanus...@mvista.com> --- .../libcap/files/CVE-2023-2602.patch | 52 +++++++++++++++++ .../libcap/files/CVE-2023-2603.patch | 58 +++++++++++++++++++ meta/recipes-support/libcap/libcap_2.32.bb | 2 + 3 files changed, 112 insertions(+) create mode 100644 meta/recipes-support/libcap/files/CVE-2023-2602.patch create mode 100644 meta/recipes-support/libcap/files/CVE-2023-2603.patch diff --git a/meta/recipes-support/libcap/files/CVE-2023-2602.patch b/meta/recipes-support/libcap/files/CVE-2023-2602.patch new file mode 100644 index 0000000000..ca04d7297a --- /dev/null +++ b/meta/recipes-support/libcap/files/CVE-2023-2602.patch @@ -0,0 +1,52 @@ +Backport of: + +From bc6b36682f188020ee4770fae1d41bde5b2c97bb Mon Sep 17 00:00:00 2001 +From: "Andrew G. Morgan" <mor...@kernel.org> +Date: Wed, 3 May 2023 19:18:36 -0700 +Subject: Correct the check of pthread_create()'s return value. + +This function returns a positive number (errno) on error, so the code +wasn't previously freeing some memory in this situation. + +Discussion: + + https://stackoverflow.com/a/3581020/14760867 + +Credit for finding this bug in libpsx goes to David Gstir of +X41 D-Sec GmbH (https://x41-dsec.de/) who performed a security +audit of the libcap source code in April of 2023. The audit +was sponsored by the Open Source Technology Improvement Fund +(https://ostif.org/). + +Audit ref: LCAP-CR-23-01 (CVE-2023-2602) + +Signed-off-by: Andrew G. Morgan <mor...@kernel.org> + +Upstream-Status: Backport [import from ubuntu https://git.launchpad.net/ubuntu/+source/libcap2/tree/debian/patches/CVE-2023-2602.patch?h=ubuntu/focal-security +Upstream commit https://git.kernel.org/pub/scm/libs/libcap/libcap.git/commit/?id=bc6b36682f188020ee4770fae1d41bde5b2c97bb] +CVE: CVE-2023-2602 +Signed-off-by: Vijay Anusuri <vanus...@mvista.com> +--- + psx/psx.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +--- a/libcap/psx.c ++++ b/libcap/psx.c +@@ -272,7 +272,7 @@ int psx_pthread_create(pthread_t *thread + + psx_wait_for_idle(); + int ret = pthread_create(thread, attr, start_routine, arg); +- if (ret != -1) { ++ if (ret == 0) { + psx_do_registration(*thread); + } + psx_resume_idle(); +@@ -287,7 +287,7 @@ int __wrap_pthread_create(pthread_t *thr + void *(*start_routine) (void *), void *arg) { + psx_wait_for_idle(); + int ret = __real_pthread_create(thread, attr, start_routine, arg); +- if (ret != -1) { ++ if (ret == 0) { + psx_do_registration(*thread); + } + psx_resume_idle(); diff --git a/meta/recipes-support/libcap/files/CVE-2023-2603.patch b/meta/recipes-support/libcap/files/CVE-2023-2603.patch new file mode 100644 index 0000000000..cf86ac2a46 --- /dev/null +++ b/meta/recipes-support/libcap/files/CVE-2023-2603.patch @@ -0,0 +1,58 @@ +Backport of: + +From 422bec25ae4a1ab03fd4d6f728695ed279173b18 Mon Sep 17 00:00:00 2001 +From: "Andrew G. Morgan" <mor...@kernel.org> +Date: Wed, 3 May 2023 19:44:22 -0700 +Subject: Large strings can confuse libcap's internal strdup code. + +Avoid something subtle with really long strings: 1073741823 should +be enough for anybody. This is an improved fix over something attempted +in libcap-2.55 to address some static analysis findings. + +Reviewing the library, cap_proc_root() and cap_launcher_set_chroot() +are the only two calls where the library is potentially exposed to a +user controlled string input. + +Credit for finding this bug in libcap goes to Richard Weinberger of +X41 D-Sec GmbH (https://x41-dsec.de/) who performed a security audit +of the libcap source code in April of 2023. The audit was sponsored +by the Open Source Technology Improvement Fund (https://ostif.org/). + +Audit ref: LCAP-CR-23-02 (CVE-2023-2603) + +Signed-off-by: Andrew G. Morgan <mor...@kernel.org> + +Upstream-Status: Backport [import from ubuntu https://git.launchpad.net/ubuntu/+source/libcap2/tree/debian/patches/CVE-2023-2603.patch?h=ubuntu/focal-security +Upstream commit https://git.kernel.org/pub/scm/libs/libcap/libcap.git/commit/?id=422bec25ae4a1ab03fd4d6f728695ed279173b18] +CVE: CVE-2023-2603 +Signed-off-by: Vijay Anusuri <vanus...@mvista.com> +--- + libcap/cap_alloc.c | 12 +++++++----- + 1 file changed, 7 insertions(+), 5 deletions(-) + +--- a/libcap/cap_alloc.c ++++ b/libcap/cap_alloc.c +@@ -76,13 +76,22 @@ cap_t cap_init(void) + char *_libcap_strdup(const char *old) + { + __u32 *raw_data; ++ size_t len; + + if (old == NULL) { + errno = EINVAL; + return NULL; + } + +- raw_data = malloc( sizeof(__u32) + strlen(old) + 1 ); ++ len = strlen(old); ++ if ((len & 0x3fffffff) != len) { ++ _cap_debug("len is too long for libcap to manage"); ++ errno = EINVAL; ++ return NULL; ++ } ++ len += sizeof(__u32) + 1; ++ ++ raw_data = malloc(len); + if (raw_data == NULL) { + errno = ENOMEM; + return NULL; diff --git a/meta/recipes-support/libcap/libcap_2.32.bb b/meta/recipes-support/libcap/libcap_2.32.bb index d67babb5e9..64d5190aa7 100644 --- a/meta/recipes-support/libcap/libcap_2.32.bb +++ b/meta/recipes-support/libcap/libcap_2.32.bb @@ -13,6 +13,8 @@ SRC_URI = "${KERNELORG_MIRROR}/linux/libs/security/linux-privs/${BPN}2/${BPN}-${ file://0001-ensure-the-XATTR_NAME_CAPS-is-defined-when-it-is-use.patch \ file://0002-tests-do-not-run-target-executables.patch \ file://0001-tests-do-not-statically-link-a-test.patch \ + file://CVE-2023-2602.patch \ + file://CVE-2023-2603.patch \ " SRC_URI[md5sum] = "7416119c9fdcfd0e8dd190a432c668e9" SRC_URI[sha256sum] = "1005e3d227f2340ad1e3360ef8b69d15e3c72a29c09f4894d7aac038bd26e2be" -- 2.25.1
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