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| author | Richard Haines <richard_c_haines@btinternet.com> | 2022-02-25 17:54:38 +0000 |
|---|---|---|
| committer | Paul Moore <paul@paul-moore.com> | 2022-02-25 15:35:19 -0500 |
| commit | 65881e1db4e948614d9eb195b8e1197339822949 (patch) | |
| tree | 5412d30772bda69f399724371c13d53cfa4c1d96 /security/selinux/include/security.h | |
| parent | b97df7c098c531010e445da88d02b7bf7bf59ef6 (diff) | |
| download | linux-65881e1db4e948614d9eb195b8e1197339822949.tar.gz linux-65881e1db4e948614d9eb195b8e1197339822949.tar.bz2 linux-65881e1db4e948614d9eb195b8e1197339822949.zip | |
selinux: allow FIOCLEX and FIONCLEX with policy capability
These ioctls are equivalent to fcntl(fd, F_SETFD, flags), which SELinux
always allows too. Furthermore, a failed FIOCLEX could result in a file
descriptor being leaked to a process that should not have access to it.
As this patch removes access controls, a policy capability needs to be
enabled in policy to always allow these ioctls.
Based-on-patch-by: Demi Marie Obenour <demiobenour@gmail.com>
Signed-off-by: Richard Haines <richard_c_haines@btinternet.com>
[PM: subject line tweak]
Signed-off-by: Paul Moore <paul@paul-moore.com>
Diffstat (limited to 'security/selinux/include/security.h')
| -rw-r--r-- | security/selinux/include/security.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/security/selinux/include/security.h b/security/selinux/include/security.h index d91a5672de99..84f42fa8012f 100644 --- a/security/selinux/include/security.h +++ b/security/selinux/include/security.h @@ -219,6 +219,13 @@ static inline bool selinux_policycap_genfs_seclabel_symlinks(void) return READ_ONCE(state->policycap[POLICYDB_CAPABILITY_GENFS_SECLABEL_SYMLINKS]); } +static inline bool selinux_policycap_ioctl_skip_cloexec(void) +{ + struct selinux_state *state = &selinux_state; + + return READ_ONCE(state->policycap[POLICYDB_CAPABILITY_IOCTL_SKIP_CLOEXEC]); +} + struct selinux_policy_convert_data; struct selinux_load_state { |