Date: Sat, 3 Mar 2018 21:14:56 +0000 (UTC) From: Eitan Adler <eadler@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r330356 - head/sys/compat/linux Message-ID: <201803032114.w23LEuXv057768@repo.freebsd.org>
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Author: eadler Date: Sat Mar 3 21:14:55 2018 New Revision: 330356 URL: https://svnweb.freebsd.org/changeset/base/330356 Log: sys/linux: Fix a few potential infoleaks in Linux IPC Submitted by: Domagoj Stolfa <domagoj.stolfa@gmail.com> MFC After: 1 month Modified: head/sys/compat/linux/linux_ipc.c Modified: head/sys/compat/linux/linux_ipc.c ============================================================================== --- head/sys/compat/linux/linux_ipc.c Sat Mar 3 21:05:28 2018 (r330355) +++ head/sys/compat/linux/linux_ipc.c Sat Mar 3 21:14:55 2018 (r330356) @@ -548,6 +548,9 @@ linux_semctl(struct thread *td, struct linux_semctl_ar register_t rval; int cmd, error; + memset(&linux_seminfo, 0, sizeof(linux_seminfo)); + memset(&linux_semid64, 0, sizeof(linux_semid64)); + switch (args->cmd & ~LINUX_IPC_64) { case LINUX_IPC_RMID: cmd = IPC_RMID; @@ -702,12 +705,15 @@ linux_msgctl(struct thread *td, struct linux_msgctl_ar struct l_msqid64_ds linux_msqid64; struct msqid_ds bsd_msqid; + memset(&linux_msqid64, 0, sizeof(linux_msqid64)); + bsd_cmd = args->cmd & ~LINUX_IPC_64; switch (bsd_cmd) { case LINUX_IPC_INFO: case LINUX_MSG_INFO: { struct l_msginfo linux_msginfo; + memset(&linux_msginfo, 0, sizeof(linux_msginfo)); /* * XXX MSG_INFO uses the same data structure but returns different * dynamic counters in msgpool, msgmap, and msgtql fields. @@ -832,6 +838,10 @@ linux_shmctl(struct thread *td, struct linux_shmctl_ar struct l_shm_info linux_shm_info; struct shmid_ds bsd_shmid; int error; + + memset(&linux_shm_info, 0, sizeof(linux_shm_info)); + memset(&linux_shmid64, 0, sizeof(linux_shmid64)); + memset(&linux_shminfo64, 0, sizeof(linux_shminfo64)); switch (args->cmd & ~LINUX_IPC_64) {
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