diff options
| author | Sebastian Schmidt <yath@yath.de> | 2014-10-19 20:05:15 +0200 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2014-11-05 09:59:48 -0800 |
| commit | 68c4a4f8abc60c9440ede9cd123d48b78325f7a3 (patch) | |
| tree | ef8aefb7d8c3769204116ff65cfa48551464a275 /include/linux/syslog.h | |
| parent | a28726b4fb624f81d637a8afb9ea12fc16500f61 (diff) | |
pstore: Honor dmesg_restrict sysctl on dmesg dumps
When the kernel.dmesg_restrict restriction is in place, only users with
CAP_SYSLOG should be able to access crash dumps (like: attacker is
trying to exploit a bug, watchdog reboots, attacker can happily read
crash dumps and logs).
This puts the restriction on console-* types as well as sensitive
information could have been leaked there.
Other log types are unaffected.
Signed-off-by: Sebastian Schmidt <yath@yath.de>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'include/linux/syslog.h')
| -rw-r--r-- | include/linux/syslog.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/syslog.h b/include/linux/syslog.h index 98a3153c0f96..9def5297dbb7 100644 --- a/include/linux/syslog.h +++ b/include/linux/syslog.h @@ -48,5 +48,6 @@ #define SYSLOG_FROM_PROC 1 int do_syslog(int type, char __user *buf, int count, bool from_file); +int check_syslog_permissions(int type, bool from_file); #endif /* _LINUX_SYSLOG_H */ |