Date: Wed, 29 Apr 2026 14:49:21 +0000 Message-ID: <69f21a71.3ae6f.7016221a@gitrepo.freebsd.org>
index | next in thread | raw e-mail
The branch releng/14.3 has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=f04c40607b8fb38720d57631c674f07d4207c976 commit f04c40607b8fb38720d57631c674f07d4207c976 Author: Mark Johnston <markj@FreeBSD.org> AuthorDate: 2026-04-22 17:58:35 +0000 Commit: Mark Johnston <markj@FreeBSD.org> CommitDate: 2026-04-28 20:33:04 +0000 execve: Fix an operator precedence bug The buggy version allowed userspace to overflow the copy into adjacent execve KVA regions, which enables, among other things, injecting environment variables into privileged processes. Approved by: so Security: FreeBSD-SA-26:13.exec Security: CVE-2026-7270 Reported by: Ryan Austin of Calif.io Reviewed by: brooks, kib Fixes: f373437a01a3 ("Add helper functions to copy strings into struct image_args.") Differential Revision: https://reviews.freebsd.org/D56665 --- sys/kern/kern_exec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sys/kern/kern_exec.c b/sys/kern/kern_exec.c index 6727872b5b10..484adaac91ec 100644 --- a/sys/kern/kern_exec.c +++ b/sys/kern/kern_exec.c @@ -1625,7 +1625,7 @@ exec_args_adjust_args(struct image_args *args, size_t consume, ssize_t extend) if (args->stringspace < offset) return (E2BIG); memmove(args->begin_argv + extend, args->begin_argv + consume, - args->endp - args->begin_argv + consume); + args->endp - (args->begin_argv + consume)); if (args->envc > 0) args->begin_envv += offset; args->endp += offset;home | help
Want to link to this message? Use this
URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?69f21a71.3ae6f.7016221a>