diff mbox series

[meta-oe] libyang: backport a fix for CVE-2023-26916

Message ID 20230531223435.2927651-1-nat.bailey@windriver.com
State New
Headers show
Series [meta-oe] libyang: backport a fix for CVE-2023-26916 | expand

Commit Message

Natasha Bailey May 31, 2023, 10:34 p.m. UTC
From: Natasha Bailey <nat.bailey@windriver.com>

This patch fixes a bug in libyang which could cause a null
pointer dereference from a call to strcmp.

Since this recipe includes ptests, the tests were run twice
(once before the patch and once after) with the same results:
all tests passing except utest_types, which is skipped.

Signed-off-by: Natasha Bailey <nat.bailey@windriver.com>
Signed-off-by: Randy MacLeod <Randy.MacLeod@windriver.com>
---
 .../libyang/libyang/CVE-2023-26916.patch      | 57 +++++++++++++++++++
 .../libyang/libyang_2.0.164.bb                |  1 +
 2 files changed, 58 insertions(+)
 create mode 100644 meta-oe/recipes-extended/libyang/libyang/CVE-2023-26916.patch

Comments

Khem Raj June 1, 2023, 2:23 a.m. UTC | #1
it does not look like its for master branch. Please prefix subject
line with correct release infor to help route it better.

On Wed, May 31, 2023 at 3:41 PM Nat Bailey via lists.openembedded.org
<nat.bailey=windriver.com@lists.openembedded.org> wrote:
>
> From: Natasha Bailey <nat.bailey@windriver.com>
>
> This patch fixes a bug in libyang which could cause a null
> pointer dereference from a call to strcmp.
>
> Since this recipe includes ptests, the tests were run twice
> (once before the patch and once after) with the same results:
> all tests passing except utest_types, which is skipped.
>
> Signed-off-by: Natasha Bailey <nat.bailey@windriver.com>
> Signed-off-by: Randy MacLeod <Randy.MacLeod@windriver.com>
> ---
>  .../libyang/libyang/CVE-2023-26916.patch      | 57 +++++++++++++++++++
>  .../libyang/libyang_2.0.164.bb                |  1 +
>  2 files changed, 58 insertions(+)
>  create mode 100644 meta-oe/recipes-extended/libyang/libyang/CVE-2023-26916.patch
>
> diff --git a/meta-oe/recipes-extended/libyang/libyang/CVE-2023-26916.patch b/meta-oe/recipes-extended/libyang/libyang/CVE-2023-26916.patch
> new file mode 100644
> index 000000000..f3af3dbff
> --- /dev/null
> +++ b/meta-oe/recipes-extended/libyang/libyang/CVE-2023-26916.patch
> @@ -0,0 +1,57 @@
> +From dc668d296f9f05aeab6315d44cff3208641e3096 Mon Sep 17 00:00:00 2001
> +From: Michal Vasko <mvasko@cesnet.cz>
> +Date: Mon, 13 Feb 2023 10:23:13 +0100
> +Subject: [PATCH] schema compile UPDATE do not implement 2 same modules
> +
> +CVE: CVE-2023-26916
> +Upstream-Status: Backport [https://github.com/CESNET/libyang/commit/dc668d296f9f05aeab6315d44cff3208641e3096]
> +
> +Refs #1979
> +---
> + src/schema_compile.c | 20 +++++++-------------
> + 1 file changed, 7 insertions(+), 13 deletions(-)
> +
> +diff --git a/src/schema_compile.c b/src/schema_compile.c
> +index ed768ba0..68c0d681 100644
> +--- a/src/schema_compile.c
> ++++ b/src/schema_compile.c
> +@@ -1748,7 +1748,7 @@ lys_has_compiled_import_r(struct lys_module *mod)
> + LY_ERR
> + lys_implement(struct lys_module *mod, const char **features, struct lys_glob_unres *unres)
> + {
> +-    LY_ERR ret;
> ++    LY_ERR r;
> +     struct lys_module *m;
> +
> +     assert(!mod->implemented);
> +@@ -1757,21 +1757,15 @@ lys_implement(struct lys_module *mod, const char **features, struct lys_glob_unr
> +     m = ly_ctx_get_module_implemented(mod->ctx, mod->name);
> +     if (m) {
> +         assert(m != mod);
> +-        if (!strcmp(mod->name, "yang") && (strcmp(m->revision, mod->revision) > 0)) {
> +-            /* special case for newer internal module, continue */
> +-            LOGVRB("Internal module \"%s@%s\" is already implemented in revision \"%s\", using it instead.",
> +-                    mod->name, mod->revision ? mod->revision : "<none>", m->revision ? m->revision : "<none>");
> +-        } else {
> +-            LOGERR(mod->ctx, LY_EDENIED, "Module \"%s@%s\" is already implemented in revision \"%s\".",
> +-                    mod->name, mod->revision ? mod->revision : "<none>", m->revision ? m->revision : "<none>");
> +-            return LY_EDENIED;
> +-        }
> ++        LOGERR(mod->ctx, LY_EDENIED, "Module \"%s@%s\" is already implemented in revision \"%s\".",
> ++                mod->name, mod->revision ? mod->revision : "<none>", m->revision ? m->revision : "<none>");
> ++        return LY_EDENIED;
> +     }
> +
> +     /* set features */
> +-    ret = lys_set_features(mod->parsed, features);
> +-    if (ret && (ret != LY_EEXIST)) {
> +-        return ret;
> ++    r = lys_set_features(mod->parsed, features);
> ++    if (r && (r != LY_EEXIST)) {
> ++        return r;
> +     }
> +
> +     /*
> +--
> +2.34.1
> +
> diff --git a/meta-oe/recipes-extended/libyang/libyang_2.0.164.bb b/meta-oe/recipes-extended/libyang/libyang_2.0.164.bb
> index 2817be7c8..7875c1ef7 100644
> --- a/meta-oe/recipes-extended/libyang/libyang_2.0.164.bb
> +++ b/meta-oe/recipes-extended/libyang/libyang_2.0.164.bb
> @@ -11,6 +11,7 @@ SRCREV = "a0cc89516ab5eca84d01c85309f320a94752a64c"
>  SRC_URI = "git://github.com/CESNET/libyang.git;branch=master;protocol=https \
>             file://libyang-add-stdint-h.patch \
>             file://run-ptest \
> +           file://CVE-2023-26916.patch \
>             "
>
>  S = "${WORKDIR}/git"
> --
> 2.34.1
>
>
>
> -=-=-=-=-=-=-=-=-=-=-=-
> Links: You receive all messages sent to this group.
> View/Reply Online (#103075): https://lists.openembedded.org/g/openembedded-devel/message/103075
> Mute This Topic: https://lists.openembedded.org/mt/99253028/1997914
> Group Owner: openembedded-devel+owner@lists.openembedded.org
> Unsubscribe: https://lists.openembedded.org/g/openembedded-devel/unsub [raj.khem@gmail.com]
> -=-=-=-=-=-=-=-=-=-=-=-
>
Randy MacLeod June 1, 2023, 5:48 p.m. UTC | #2
Oops, Nat forgot the branch prefix.

Shall she re-send ?

../Randy

On 2023-05-31 18:34, Nat Bailey wrote:
> From: Natasha Bailey<nat.bailey@windriver.com>
>
> This patch fixes a bug in libyang which could cause a null
> pointer dereference from a call to strcmp.
>
> Since this recipe includes ptests, the tests were run twice
> (once before the patch and once after) with the same results:
> all tests passing except utest_types, which is skipped.
>
> Signed-off-by: Natasha Bailey<nat.bailey@windriver.com>
> Signed-off-by: Randy MacLeod<Randy.MacLeod@windriver.com>
> ---
>   .../libyang/libyang/CVE-2023-26916.patch      | 57 +++++++++++++++++++
>   .../libyang/libyang_2.0.164.bb                |  1 +
>   2 files changed, 58 insertions(+)
>   create mode 100644 meta-oe/recipes-extended/libyang/libyang/CVE-2023-26916.patch
>
> diff --git a/meta-oe/recipes-extended/libyang/libyang/CVE-2023-26916.patch b/meta-oe/recipes-extended/libyang/libyang/CVE-2023-26916.patch
> new file mode 100644
> index 000000000..f3af3dbff
> --- /dev/null
> +++ b/meta-oe/recipes-extended/libyang/libyang/CVE-2023-26916.patch
> @@ -0,0 +1,57 @@
> +From dc668d296f9f05aeab6315d44cff3208641e3096 Mon Sep 17 00:00:00 2001
> +From: Michal Vasko<mvasko@cesnet.cz>
> +Date: Mon, 13 Feb 2023 10:23:13 +0100
> +Subject: [PATCH] schema compile UPDATE do not implement 2 same modules
> +
> +CVE: CVE-2023-26916
> +Upstream-Status: Backport [https://github.com/CESNET/libyang/commit/dc668d296f9f05aeab6315d44cff3208641e3096]
> +
> +Refs #1979
> +---
> + src/schema_compile.c | 20 +++++++-------------
> + 1 file changed, 7 insertions(+), 13 deletions(-)
> +
> +diff --git a/src/schema_compile.c b/src/schema_compile.c
> +index ed768ba0..68c0d681 100644
> +--- a/src/schema_compile.c
> ++++ b/src/schema_compile.c
> +@@ -1748,7 +1748,7 @@ lys_has_compiled_import_r(struct lys_module *mod)
> + LY_ERR
> + lys_implement(struct lys_module *mod, const char **features, struct lys_glob_unres *unres)
> + {
> +-    LY_ERR ret;
> ++    LY_ERR r;
> +     struct lys_module *m;
> +
> +     assert(!mod->implemented);
> +@@ -1757,21 +1757,15 @@ lys_implement(struct lys_module *mod, const char **features, struct lys_glob_unr
> +     m = ly_ctx_get_module_implemented(mod->ctx, mod->name);
> +     if (m) {
> +         assert(m != mod);
> +-        if (!strcmp(mod->name, "yang") && (strcmp(m->revision, mod->revision) > 0)) {
> +-            /* special case for newer internal module, continue */
> +-            LOGVRB("Internal module \"%s@%s\" is already implemented in revision \"%s\", using it instead.",
> +-                    mod->name, mod->revision ? mod->revision : "<none>", m->revision ? m->revision : "<none>");
> +-        } else {
> +-            LOGERR(mod->ctx, LY_EDENIED, "Module \"%s@%s\" is already implemented in revision \"%s\".",
> +-                    mod->name, mod->revision ? mod->revision : "<none>", m->revision ? m->revision : "<none>");
> +-            return LY_EDENIED;
> +-        }
> ++        LOGERR(mod->ctx, LY_EDENIED, "Module \"%s@%s\" is already implemented in revision \"%s\".",
> ++                mod->name, mod->revision ? mod->revision : "<none>", m->revision ? m->revision : "<none>");
> ++        return LY_EDENIED;
> +     }
> +
> +     /* set features */
> +-    ret = lys_set_features(mod->parsed, features);
> +-    if (ret && (ret != LY_EEXIST)) {
> +-        return ret;
> ++    r = lys_set_features(mod->parsed, features);
> ++    if (r && (r != LY_EEXIST)) {
> ++        return r;
> +     }
> +
> +     /*
> +--
> +2.34.1
> +
> diff --git a/meta-oe/recipes-extended/libyang/libyang_2.0.164.bb b/meta-oe/recipes-extended/libyang/libyang_2.0.164.bb
> index 2817be7c8..7875c1ef7 100644
> --- a/meta-oe/recipes-extended/libyang/libyang_2.0.164.bb
> +++ b/meta-oe/recipes-extended/libyang/libyang_2.0.164.bb
> @@ -11,6 +11,7 @@ SRCREV = "a0cc89516ab5eca84d01c85309f320a94752a64c"
>   SRC_URI = "git://github.com/CESNET/libyang.git;branch=master;protocol=https \
>              file://libyang-add-stdint-h.patch  \
>              file://run-ptest  \
> +file://CVE-2023-26916.patch  \
>              "
>   
>   S = "${WORKDIR}/git"
akuster808 June 1, 2023, 8:38 p.m. UTC | #3
On 6/1/23 1:48 PM, Randy MacLeod wrote:
> Oops, Nat forgot the branch prefix.
>
> Shall she re-send ?

No need. I moved it to the correct folder.

thanks for highlighting it.

-armin
>
> ../Randy
>
> On 2023-05-31 18:34, Nat Bailey wrote:
>> From: Natasha Bailey<nat.bailey@windriver.com>
>>
>> This patch fixes a bug in libyang which could cause a null
>> pointer dereference from a call to strcmp.
>>
>> Since this recipe includes ptests, the tests were run twice
>> (once before the patch and once after) with the same results:
>> all tests passing except utest_types, which is skipped.
>>
>> Signed-off-by: Natasha Bailey<nat.bailey@windriver.com>
>> Signed-off-by: Randy MacLeod<Randy.MacLeod@windriver.com>
>> ---
>>   .../libyang/libyang/CVE-2023-26916.patch      | 57 +++++++++++++++++++
>>   .../libyang/libyang_2.0.164.bb                |  1 +
>>   2 files changed, 58 insertions(+)
>>   create mode 100644 meta-oe/recipes-extended/libyang/libyang/CVE-2023-26916.patch
>>
>> diff --git a/meta-oe/recipes-extended/libyang/libyang/CVE-2023-26916.patch b/meta-oe/recipes-extended/libyang/libyang/CVE-2023-26916.patch
>> new file mode 100644
>> index 000000000..f3af3dbff
>> --- /dev/null
>> +++ b/meta-oe/recipes-extended/libyang/libyang/CVE-2023-26916.patch
>> @@ -0,0 +1,57 @@
>> +From dc668d296f9f05aeab6315d44cff3208641e3096 Mon Sep 17 00:00:00 2001
>> +From: Michal Vasko<mvasko@cesnet.cz>
>> +Date: Mon, 13 Feb 2023 10:23:13 +0100
>> +Subject: [PATCH] schema compile UPDATE do not implement 2 same modules
>> +
>> +CVE: CVE-2023-26916
>> +Upstream-Status: Backport [https://github.com/CESNET/libyang/commit/dc668d296f9f05aeab6315d44cff3208641e3096]
>> +
>> +Refs #1979
>> +---
>> + src/schema_compile.c | 20 +++++++-------------
>> + 1 file changed, 7 insertions(+), 13 deletions(-)
>> +
>> +diff --git a/src/schema_compile.c b/src/schema_compile.c
>> +index ed768ba0..68c0d681 100644
>> +--- a/src/schema_compile.c
>> ++++ b/src/schema_compile.c
>> +@@ -1748,7 +1748,7 @@ lys_has_compiled_import_r(struct lys_module *mod)
>> + LY_ERR
>> + lys_implement(struct lys_module *mod, const char **features, struct lys_glob_unres *unres)
>> + {
>> +-    LY_ERR ret;
>> ++    LY_ERR r;
>> +     struct lys_module *m;
>> +
>> +     assert(!mod->implemented);
>> +@@ -1757,21 +1757,15 @@ lys_implement(struct lys_module *mod, const char **features, struct lys_glob_unr
>> +     m = ly_ctx_get_module_implemented(mod->ctx, mod->name);
>> +     if (m) {
>> +         assert(m != mod);
>> +-        if (!strcmp(mod->name, "yang") && (strcmp(m->revision, mod->revision) > 0)) {
>> +-            /* special case for newer internal module, continue */
>> +-            LOGVRB("Internal module \"%s@%s\" is already implemented in revision \"%s\", using it instead.",
>> +-                    mod->name, mod->revision ? mod->revision : "<none>", m->revision ? m->revision : "<none>");
>> +-        } else {
>> +-            LOGERR(mod->ctx, LY_EDENIED, "Module \"%s@%s\" is already implemented in revision \"%s\".",
>> +-                    mod->name, mod->revision ? mod->revision : "<none>", m->revision ? m->revision : "<none>");
>> +-            return LY_EDENIED;
>> +-        }
>> ++        LOGERR(mod->ctx, LY_EDENIED, "Module \"%s@%s\" is already implemented in revision \"%s\".",
>> ++                mod->name, mod->revision ? mod->revision : "<none>", m->revision ? m->revision : "<none>");
>> ++        return LY_EDENIED;
>> +     }
>> +
>> +     /* set features */
>> +-    ret = lys_set_features(mod->parsed, features);
>> +-    if (ret && (ret != LY_EEXIST)) {
>> +-        return ret;
>> ++    r = lys_set_features(mod->parsed, features);
>> ++    if (r && (r != LY_EEXIST)) {
>> ++        return r;
>> +     }
>> +
>> +     /*
>> +--
>> +2.34.1
>> +
>> diff --git a/meta-oe/recipes-extended/libyang/libyang_2.0.164.bb b/meta-oe/recipes-extended/libyang/libyang_2.0.164.bb
>> index 2817be7c8..7875c1ef7 100644
>> --- a/meta-oe/recipes-extended/libyang/libyang_2.0.164.bb
>> +++ b/meta-oe/recipes-extended/libyang/libyang_2.0.164.bb
>> @@ -11,6 +11,7 @@ SRCREV = "a0cc89516ab5eca84d01c85309f320a94752a64c"
>>   SRC_URI = "git://github.com/CESNET/libyang.git;branch=master;protocol=https \
>>              file://libyang-add-stdint-h.patch  \
>>              file://run-ptest  \
>> +file://CVE-2023-26916.patch  \
>>              "
>>   
>>   S = "${WORKDIR}/git"
>
>
> -- 
> # Randy MacLeod
> # Wind River Linux
diff mbox series

Patch

diff --git a/meta-oe/recipes-extended/libyang/libyang/CVE-2023-26916.patch b/meta-oe/recipes-extended/libyang/libyang/CVE-2023-26916.patch
new file mode 100644
index 000000000..f3af3dbff
--- /dev/null
+++ b/meta-oe/recipes-extended/libyang/libyang/CVE-2023-26916.patch
@@ -0,0 +1,57 @@ 
+From dc668d296f9f05aeab6315d44cff3208641e3096 Mon Sep 17 00:00:00 2001
+From: Michal Vasko <mvasko@cesnet.cz>
+Date: Mon, 13 Feb 2023 10:23:13 +0100
+Subject: [PATCH] schema compile UPDATE do not implement 2 same modules
+
+CVE: CVE-2023-26916
+Upstream-Status: Backport [https://github.com/CESNET/libyang/commit/dc668d296f9f05aeab6315d44cff3208641e3096]
+
+Refs #1979
+---
+ src/schema_compile.c | 20 +++++++-------------
+ 1 file changed, 7 insertions(+), 13 deletions(-)
+
+diff --git a/src/schema_compile.c b/src/schema_compile.c
+index ed768ba0..68c0d681 100644
+--- a/src/schema_compile.c
++++ b/src/schema_compile.c
+@@ -1748,7 +1748,7 @@ lys_has_compiled_import_r(struct lys_module *mod)
+ LY_ERR
+ lys_implement(struct lys_module *mod, const char **features, struct lys_glob_unres *unres)
+ {
+-    LY_ERR ret;
++    LY_ERR r;
+     struct lys_module *m;
+ 
+     assert(!mod->implemented);
+@@ -1757,21 +1757,15 @@ lys_implement(struct lys_module *mod, const char **features, struct lys_glob_unr
+     m = ly_ctx_get_module_implemented(mod->ctx, mod->name);
+     if (m) {
+         assert(m != mod);
+-        if (!strcmp(mod->name, "yang") && (strcmp(m->revision, mod->revision) > 0)) {
+-            /* special case for newer internal module, continue */
+-            LOGVRB("Internal module \"%s@%s\" is already implemented in revision \"%s\", using it instead.",
+-                    mod->name, mod->revision ? mod->revision : "<none>", m->revision ? m->revision : "<none>");
+-        } else {
+-            LOGERR(mod->ctx, LY_EDENIED, "Module \"%s@%s\" is already implemented in revision \"%s\".",
+-                    mod->name, mod->revision ? mod->revision : "<none>", m->revision ? m->revision : "<none>");
+-            return LY_EDENIED;
+-        }
++        LOGERR(mod->ctx, LY_EDENIED, "Module \"%s@%s\" is already implemented in revision \"%s\".",
++                mod->name, mod->revision ? mod->revision : "<none>", m->revision ? m->revision : "<none>");
++        return LY_EDENIED;
+     }
+ 
+     /* set features */
+-    ret = lys_set_features(mod->parsed, features);
+-    if (ret && (ret != LY_EEXIST)) {
+-        return ret;
++    r = lys_set_features(mod->parsed, features);
++    if (r && (r != LY_EEXIST)) {
++        return r;
+     }
+ 
+     /*
+-- 
+2.34.1
+
diff --git a/meta-oe/recipes-extended/libyang/libyang_2.0.164.bb b/meta-oe/recipes-extended/libyang/libyang_2.0.164.bb
index 2817be7c8..7875c1ef7 100644
--- a/meta-oe/recipes-extended/libyang/libyang_2.0.164.bb
+++ b/meta-oe/recipes-extended/libyang/libyang_2.0.164.bb
@@ -11,6 +11,7 @@  SRCREV = "a0cc89516ab5eca84d01c85309f320a94752a64c"
 SRC_URI = "git://github.com/CESNET/libyang.git;branch=master;protocol=https \
            file://libyang-add-stdint-h.patch \
            file://run-ptest \
+           file://CVE-2023-26916.patch \
            "
 
 S = "${WORKDIR}/git"