Date: Thu, 12 May 2022 22:56:35 GMT From: John Baldwin <jhb@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 17cb4e662e17 - stable/13 - elf: Avoid dumping uninitialized bytes in PRSTATUS core dump notes Message-ID: <202205122256.24CMuZpr020695@gitrepo.freebsd.org>
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The branch stable/13 has been updated by jhb: URL: https://cgit.FreeBSD.org/src/commit/?id=17cb4e662e17d9d5bc295bfa1f55cdae400ab5e8 commit 17cb4e662e17d9d5bc295bfa1f55cdae400ab5e8 Author: Mark Johnston <markj@FreeBSD.org> AuthorDate: 2022-03-23 16:52:44 +0000 Commit: John Baldwin <jhb@FreeBSD.org> CommitDate: 2022-05-12 22:12:59 +0000 elf: Avoid dumping uninitialized bytes in PRSTATUS core dump notes elf_prstatus_t contains pad space. Reported by: KMSAN MFC after: 1 week Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D34606 (cherry picked from commit 1babcad6bc4093664a10c7ab98b9ebd2d64bcaaf) --- sys/kern/imgact_elf.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sys/kern/imgact_elf.c b/sys/kern/imgact_elf.c index 419449262978..c39a865dcf05 100644 --- a/sys/kern/imgact_elf.c +++ b/sys/kern/imgact_elf.c @@ -2180,6 +2180,7 @@ __elfN(get_prstatus)(struct regset *rs, struct thread *td, void *buf, KASSERT(*sizep == sizeof(*status), ("%s: invalid size", __func__)); status = buf; + memset(status, 0, *sizep); status->pr_version = PRSTATUS_VERSION; status->pr_statussz = sizeof(elf_prstatus_t); status->pr_gregsetsz = sizeof(elf_gregset_t);
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