diff options
| author | Micah Morton <mortonm@chromium.org> | 2022-06-08 23:57:11 +0300 |
|---|---|---|
| committer | Micah Morton <mortonm@chromium.org> | 2022-07-15 21:21:49 +0300 |
| commit | fcfe0ac2fcfae7d5fcad3d0375cb8ff38caf8aba (patch) | |
| tree | 5cb709520c62f77b5a276d77d069a0238b2443ae /include/linux/lsm_hooks.h | |
| parent | a1732d6898ced0523cb4073c7f02d236edf312b1 (diff) | |
| download | linux-fcfe0ac2fcfae7d5fcad3d0375cb8ff38caf8aba.tar.xz | |
security: Add LSM hook to setgroups() syscall
Give the LSM framework the ability to filter setgroups() syscalls. There
are already analagous hooks for the set*uid() and set*gid() syscalls.
The SafeSetID LSM will use this new hook to ensure setgroups() calls are
allowed by the installed security policy. Tested by putting print
statement in security_task_fix_setgroups() hook and confirming that it
gets hit when userspace does a setgroups() syscall.
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Reviewed-by: Serge Hallyn <serge@hallyn.com>
Signed-off-by: Micah Morton <mortonm@chromium.org>
Diffstat (limited to 'include/linux/lsm_hooks.h')
| -rw-r--r-- | include/linux/lsm_hooks.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h index 91c8146649f5..84a0d7e02176 100644 --- a/include/linux/lsm_hooks.h +++ b/include/linux/lsm_hooks.h @@ -702,6 +702,13 @@ * @old is the set of credentials that are being replaced. * @flags contains one of the LSM_SETID_* values. * Return 0 on success. + * @task_fix_setgroups: + * Update the module's state after setting the supplementary group + * identity attributes of the current process. + * @new is the set of credentials that will be installed. Modifications + * should be made to this rather than to @current->cred. + * @old is the set of credentials that are being replaced. + * Return 0 on success. * @task_setpgid: * Check permission before setting the process group identifier of the * process @p to @pgid. |