| commit | c907edc64f5ccc35c81b44fd0444646ba97edfc4 | |
| author | Kees Cook <kees.cook@canonical.com> | |
| Sun, 8 Nov 2009 17:37:00 +0000 (8 09:37 -0800) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Thu, 1 Apr 2010 22:58:16 +0000 (1 15:58 -0700) | ||
| tree | df962f81b6173507572b6ada5f9ffc8aadea3770 | treesnapshot (tar.gz zip) |
| parent | a6c4c1c5057d956af87679861f5eeb80c72e3a5e | commitdiff |
sysctl: require CAP_SYS_RAWIO to set mmap_min_addr
commit 0e1a6ef2dea88101b056b6d9984f3325c5efced3 upstream.
Currently the mmap_min_addr value can only be bypassed during mmap when
the task has CAP_SYS_RAWIO. However, the mmap_min_addr sysctl value itself
can be adjusted to 0 if euid == 0, allowing a bypass without CAP_SYS_RAWIO.
This patch adds a check for the capability before allowing mmap_min_addr to
be changed.
Signed-off-by: Kees Cook <kees.cook@canonical.com>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
commit 0e1a6ef2dea88101b056b6d9984f3325c5efced3 upstream.
Currently the mmap_min_addr value can only be bypassed during mmap when
the task has CAP_SYS_RAWIO. However, the mmap_min_addr sysctl value itself
can be adjusted to 0 if euid == 0, allowing a bypass without CAP_SYS_RAWIO.
This patch adds a check for the capability before allowing mmap_min_addr to
be changed.
Signed-off-by: Kees Cook <kees.cook@canonical.com>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| security/min_addr.c | diffblobblamehistory |