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linux-stable/security/selinux
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Christian Göttsche cad140d008 selinux: free contexts previously transferred in selinux_add_opt() 
`selinux_add_opt()` stopped taking ownership of the passed context since
commit 70f4169ab4 ("selinux: parse contexts for mount options early").

    unreferenced object 0xffff888114dfd140 (size 64):
      comm "mount", pid 15182, jiffies 4295687028 (age 796.340s)
      hex dump (first 32 bytes):
        73 79 73 74 65 6d 5f 75 3a 6f 62 6a 65 63 74 5f  system_u:object_
        72 3a 74 65 73 74 5f 66 69 6c 65 73 79 73 74 65  r:test_filesyste
      backtrace:
        [<ffffffffa07dbef4>] kmemdup_nul+0x24/0x80
        [<ffffffffa0d34253>] selinux_sb_eat_lsm_opts+0x293/0x560
        [<ffffffffa0d13f08>] security_sb_eat_lsm_opts+0x58/0x80
        [<ffffffffa0af1eb2>] generic_parse_monolithic+0x82/0x180
        [<ffffffffa0a9c1a5>] do_new_mount+0x1f5/0x550
        [<ffffffffa0a9eccb>] path_mount+0x2ab/0x1570
        [<ffffffffa0aa019e>] __x64_sys_mount+0x20e/0x280
        [<ffffffffa1f47124>] do_syscall_64+0x34/0x80
        [<ffffffffa200007e>] entry_SYSCALL_64_after_hwframe+0x46/0xb0

    unreferenced object 0xffff888108e71640 (size 64):
      comm "fsmount", pid 7607, jiffies 4295044974 (age 1601.016s)
      hex dump (first 32 bytes):
        73 79 73 74 65 6d 5f 75 3a 6f 62 6a 65 63 74 5f  system_u:object_
        72 3a 74 65 73 74 5f 66 69 6c 65 73 79 73 74 65  r:test_filesyste
      backtrace:
        [<ffffffff861dc2b1>] memdup_user+0x21/0x90
        [<ffffffff861dc367>] strndup_user+0x47/0xa0
        [<ffffffff864f6965>] __do_sys_fsconfig+0x485/0x9f0
        [<ffffffff87940124>] do_syscall_64+0x34/0x80
        [<ffffffff87a0007e>] entry_SYSCALL_64_after_hwframe+0x46/0xb0

Cc: stable@vger.kernel.org
Fixes: 70f4169ab4 ("selinux: parse contexts for mount options early")
Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
 		2022-06-15 21:20:45 -04:00
..
include selinux: declare data arrays const 2022-05-03 15:53:49 -04:00
ss selinux/stable-5.19 PR 20220523 2022-05-24 13:06:32 -07:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
Kconfig Documentation,selinux: deprecate setting checkreqprot to 1 2020-02-10 10:49:01 -05:00
Makefile selinux: include a consumer of the new IMA critical data hook 2021-01-14 23:41:46 -05:00
avc.c selinux: declare data arrays const 2022-05-03 15:53:49 -04:00
hooks.c selinux: free contexts previously transferred in selinux_add_opt() 2022-06-15 21:20:45 -04:00
ibpkey.c selinux: various sparse fixes 2022-02-01 19:08:28 -05:00
ima.c selinux/stable-5.18 PR 20220321 2022-03-21 20:47:54 -07:00
netif.c selinux: remove unused global variables 2021-01-12 09:49:01 -05:00
netlabel.c security: pass asoc to sctp_assoc_request and sctp_sk_clone 2021-11-03 11:09:20 +00:00
netlink.c selinux: mark some global variables __ro_after_init 2021-01-12 10:08:55 -05:00
netnode.c selinux: various sparse fixes 2022-02-01 19:08:28 -05:00
netport.c selinux: various sparse fixes 2022-02-01 19:08:28 -05:00
nlmsgtab.c selinux: resolve checkpatch errors 2022-05-03 13:59:15 -04:00
selinuxfs.c selinux: don't sleep when CONFIG_SECURITY_SELINUX_CHECKREQPROT_VALUE is true 2022-04-14 16:44:21 -04:00
status.c selinux: move status variables out of selinux_ss 2020-02-10 10:49:01 -05:00
xfrm.c selinux: use correct type for context length 2022-02-18 10:45:54 -05:00