From: Tom Rix <trix@xxxxxxxxxx> commit 65de50969a77509452ae590e9449b70a22b923bb upstream. Clang's static analysis tool reports these double free memory errors. security/selinux/ss/services.c:2987:4: warning: Attempt to free released memory [unix.Malloc] kfree(bnames[i]); ^~~~~~~~~~~~~~~~ security/selinux/ss/services.c:2990:2: warning: Attempt to free released memory [unix.Malloc] kfree(bvalues); ^~~~~~~~~~~~~~ So improve the security_get_bools error handling by freeing these variables and setting their return pointers to NULL and the return len to 0 Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Tom Rix <trix@xxxxxxxxxx> Acked-by: Stephen Smalley <stephen.smalley.work@xxxxxxxxx> Signed-off-by: Paul Moore <paul@xxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- security/selinux/ss/services.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/security/selinux/ss/services.c +++ b/security/selinux/ss/services.c @@ -2923,8 +2923,12 @@ err: if (*names) { for (i = 0; i < *len; i++) kfree((*names)[i]); + kfree(*names); } kfree(*values); + *len = 0; + *names = NULL; + *values = NULL; goto out; }