diff options
author | Gordon Tetlow <gordon@FreeBSD.org> | 2018-09-27 18:36:30 +0000 |
---|---|---|
committer | Gordon Tetlow <gordon@FreeBSD.org> | 2018-09-27 18:36:30 +0000 |
commit | d869f4ade283f4691dc249e435376a5883824be2 (patch) | |
tree | db2466a76015e9b5cc1005870b4f8f2d45b7d99b | |
parent | e106753b247571ad73522292efb4403a6e2cb166 (diff) | |
download | src-releng/10.4.tar.gz src-releng/10.4.zip |
Fix small kernel memory disclosures. [EN-18:12.mem]releng/10.4
Reported by: Thomas Barabosch, Fraunhofer FKIE
Approved by: so
Security: FreeBSD-EN-18:12.mem
Security: CVE-2018-17155
Notes
Notes:
svn path=/releng/10.4/; revision=338981
-rw-r--r-- | sys/kern/kern_context.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/kern/kern_context.c b/sys/kern/kern_context.c index 70751d02cba8..acd3ded2a20c 100644 --- a/sys/kern/kern_context.c +++ b/sys/kern/kern_context.c @@ -68,6 +68,7 @@ sys_getcontext(struct thread *td, struct getcontext_args *uap) if (uap->ucp == NULL) ret = EINVAL; else { + bzero(&uc, sizeof(ucontext_t)); get_mcontext(td, &uc.uc_mcontext, GET_MC_CLEAR_RET); PROC_LOCK(td->td_proc); uc.uc_sigmask = td->td_sigmask; @@ -108,6 +109,7 @@ sys_swapcontext(struct thread *td, struct swapcontext_args *uap) if (uap->oucp == NULL || uap->ucp == NULL) ret = EINVAL; else { + bzero(&uc, sizeof(ucontext_t)); get_mcontext(td, &uc.uc_mcontext, GET_MC_CLEAR_RET); bzero(uc.__spare__, sizeof(uc.__spare__)); PROC_LOCK(td->td_proc); |