diff options
| author |   Jan-Simon Möller <jsmoeller@linuxfoundation.org> | 2018-02-14 10:54:52 +0100 |
|---|---|---|
| committer | Jan-Simon Möller <jsmoeller@linuxfoundation.org> | 2018-02-14 10:54:52 +0100 |
| commit | b6dc44f585b839ab1a2f0133b74958037fe1cb64 (patch) | |
| tree | 5025d5422e79e229c255e886cf1bd177ec11f37d /meta-app-framework/recipes-kernel/linux/linux/linux-yocto-4.12/0003-Smack-ignore-null-signal-in-smack_task_kill.patch | |
| parent | 88a162a657936f14e8e1ac5d6a0c3b368d0e9a45 (diff) | |
| parent | 07d0d613cbca9619e3ad5361d39ae0feafbcb168 (diff) | |
Merge remote-tracking branch 'agl/sandbox/locust2001/rocko' into HEAD
* agl/sandbox/locust2001/rocko: (33 commits)
most: remove skb_put_data patch from SRC_URI
linux-linaro-qcomlt: update to kernel 4.14
dragonboard-410c: update 96boards-tools recipe
dragonboard-410c: remove ACCEPT_EULA setting
00_local.conf.agl.inc: Disable GObject Introspection Data
linux-ti-staging: Remove linux-dtb.inc
geoclue: Remove unnecessary dependency
u-boot-ota: Fix build error with gcc7
linux-firmware: Remove duplicated lines
Change image type to wic.vmdk
glibc: Arrange patch file
netboot.bbclass: Remove image_types_uboot inheritance
meta-agl-bsp/classes: Remove bbclass files
rygel: Arrange rocko
security-manager: Fix build error that causes gcc v7.0
cynara: Fix build error that causes gcc v7.0
libcap: Fix warning
mesa: Arrange the recipe
libmicrohttpd: Remove the recipe
connman: Arrange patch file
...
Bug-AGL: SPEC-1181
Change-Id: I8fa84553664fd3d7495b42c7198744f05eebcce0
Signed-off-by: Jan-Simon Möller <jsmoeller@linuxfoundation.org>
Diffstat (limited to 'meta-app-framework/recipes-kernel/linux/linux/linux-yocto-4.12/0003-Smack-ignore-null-signal-in-smack_task_kill.patch')
| -rw-r--r-- | meta-app-framework/recipes-kernel/linux/linux/linux-yocto-4.12/0003-Smack-ignore-null-signal-in-smack_task_kill.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/meta-app-framework/recipes-kernel/linux/linux/linux-yocto-4.12/0003-Smack-ignore-null-signal-in-smack_task_kill.patch b/meta-app-framework/recipes-kernel/linux/linux/linux-yocto-4.12/0003-Smack-ignore-null-signal-in-smack_task_kill.patch new file mode 100644 index 000000000..c9180bb9f --- /dev/null +++ b/meta-app-framework/recipes-kernel/linux/linux/linux-yocto-4.12/0003-Smack-ignore-null-signal-in-smack_task_kill.patch @@ -0,0 +1,39 @@ +From ec4eb03af07b0fbc330aecca6ac4ebd6accd8825 Mon Sep 17 00:00:00 2001 +From: Rafal Krypa <r.krypa@samsung.com> +Date: Mon, 4 Apr 2016 11:14:53 +0200 +Subject: [PATCH 3/4] Smack: ignore null signal in smack_task_kill + +Kill with signal number 0 is commonly used for checking PID existence. +Smack treated such cases like any other kills, although no signal is +actually delivered when sig == 0. + +Checking permissions when sig == 0 didn't prevent an unprivileged caller +from learning whether PID exists or not. When it existed, kernel returned +EPERM, when it didn't - ESRCH. The only effect of policy check in such +case is noise in audit logs. + +This change lets Smack silently ignore kill() invocations with sig == 0. + +Signed-off-by: Rafal Krypa <r.krypa@samsung.com> +Acked-by: Casey Schaufler <casey@schaufler-ca.com> +--- + security/smack/smack_lsm.c | 3 +++ + 1 file changed, 3 insertions(+) + +diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c +index b2bcb14..cf8a93f 100644 +--- a/security/smack/smack_lsm.c ++++ b/security/smack/smack_lsm.c +@@ -2239,6 +2239,9 @@ static int smack_task_kill(struct task_struct *p, struct siginfo *info, + struct smack_known *tkp = smk_of_task_struct(p); + int rc; + ++ if (!sig) ++ return 0; /* null signal; existence test */ ++ + smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_TASK); + smk_ad_setfield_u_tsk(&ad, p); + /* +-- +2.7.4 + |