From: Christian Göttsche cgzones@googlemail.com
commit ef79c396c664be99d0c5660dc75fe863c1e20315 upstream.
Reset the type of the record last as the helper `audit_free_module()` depends on it.
unreferenced object 0xffff888153b707f0 (size 16): comm "modprobe", pid 1319, jiffies 4295110033 (age 1083.016s) hex dump (first 16 bytes): 62 69 6e 66 6d 74 5f 6d 69 73 63 00 6b 6b 6b a5 binfmt_misc.kkk. backtrace: [<ffffffffa07dbf9b>] kstrdup+0x2b/0x50 [<ffffffffa04b0a9d>] __audit_log_kern_module+0x4d/0xf0 [<ffffffffa03b6664>] load_module+0x9d4/0x2e10 [<ffffffffa03b8f44>] __do_sys_finit_module+0x114/0x1b0 [<ffffffffa1f47124>] do_syscall_64+0x34/0x80 [<ffffffffa200007e>] entry_SYSCALL_64_after_hwframe+0x46/0xb0
Cc: stable@vger.kernel.org Fixes: 12c5e81d3fd0 ("audit: prepare audit_context for use in calling contexts beyond syscalls") Signed-off-by: Christian Göttsche cgzones@googlemail.com Signed-off-by: Paul Moore paul@paul-moore.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- kernel/auditsc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -1014,10 +1014,10 @@ static void audit_reset_context(struct a ctx->target_comm[0] = '\0'; unroll_tree_refs(ctx, NULL, 0); WARN_ON(!list_empty(&ctx->killed_trees)); - ctx->type = 0; audit_free_module(ctx); ctx->fds[0] = -1; audit_proctitle_free(ctx); + ctx->type = 0; /* reset last for audit_free_*() */ }
static inline struct audit_context *audit_alloc_context(enum audit_state state)