linux/security
Tetsuo Handa 7d930a4da1 tomoyo: fix UAF write bug in tomoyo_write_control()
commit 2f03fc340c upstream.

Since tomoyo_write_control() updates head->write_buf when write()
of long lines is requested, we need to fetch head->write_buf after
head->io_sem is held.  Otherwise, concurrent write() requests can
cause use-after-free-write and double-free problems.

Reported-by: Sam Sun <samsun1006219@gmail.com>
Closes: https://lkml.kernel.org/r/CAEkJfYNDspuGxYx5kym8Lvp--D36CMDUErg4rxfWFJuPbbji8g@mail.gmail.com
Fixes: bd03a3e4c9 ("TOMOYO: Add policy namespace support.")
Cc:  <stable@vger.kernel.org> # Linux 3.1+
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-03-06 14:38:48 +00:00
..
apparmor apparmor: avoid crash when parsed profile name is empty 2024-01-25 14:52:52 -08:00
bpf bpf: Implement task local storage 2020-11-06 08:08:37 -08:00
integrity ima: detect changes to the backing overlay file 2023-11-28 16:56:29 +00:00
keys keys, dns: Allow key types (eg. DNS) to be reclaimed immediately on expiry 2024-01-05 15:13:30 +01:00
landlock landlock: Fix same-layer rule unions 2022-06-09 10:23:24 +02:00
loadpin LoadPin: Ignore the "contents" argument of the LSM hooks 2022-12-31 13:14:45 +01:00
lockdown Merge branch 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2020-06-02 17:36:24 -07:00
safesetid LSM: SafeSetID: Mark safesetid_initialized as __initdata 2021-06-10 09:52:32 -07:00
selinux lsm: new security_file_ioctl_compat() hook 2024-02-23 08:54:25 +01:00
smack lsm: new security_file_ioctl_compat() hook 2024-02-23 08:54:25 +01:00
tomoyo tomoyo: fix UAF write bug in tomoyo_write_control() 2024-03-06 14:38:48 +00:00
yama task_work: cleanup notification modes 2020-10-17 15:05:30 -06:00
commoncap.c capabilities: fix potential memleak on error path from vfs_getxattr_alloc() 2022-11-10 18:15:39 +01:00
device_cgroup.c device_cgroup: Roll back to original exceptions after copy failure 2023-01-12 11:58:59 +01:00
inode.c Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-07-19 10:42:02 -07:00
Kconfig x86/retbleed: Add fine grained Kconfig knobs 2022-07-23 12:54:10 +02:00
Kconfig.hardening security: Restrict CONFIG_ZERO_CALL_USED_REGS to gcc or clang > 15.0.6 2022-12-31 13:14:46 +01:00
lsm_audit.c audit: remove unnecessary 'ret' initialization 2021-06-11 13:21:28 -04:00
Makefile security: remove unneeded subdir-$(CONFIG_...) 2021-09-03 08:17:20 +09:00
min_addr.c sysctl: pass kernel pointers to ->proc_handler 2020-04-27 02:07:40 -04:00
security.c lsm: fix the logic in security_inode_getsecctx() 2024-02-23 08:55:05 +01:00