The branch main has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=e41c28e67fac9cd22a85b160c5c9d0477ed03600
commit e41c28e67fac9cd22a85b160c5c9d0477ed03600 Author: Konstantin Belousov <[email protected]> AuthorDate: 2026-06-07 19:21:40 +0000 Commit: Konstantin Belousov <[email protected]> CommitDate: 2026-06-21 11:46:53 +0000 linux_prlimit(): block execve for the target Reviewed by: markj Tested by: pho Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D57497 --- sys/compat/linux/linux_misc.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/sys/compat/linux/linux_misc.c b/sys/compat/linux/linux_misc.c index c863e1db8b02..3aecc0106aaa 100644 --- a/sys/compat/linux/linux_misc.c +++ b/sys/compat/linux/linux_misc.c @@ -2038,6 +2038,7 @@ linux_prlimit64(struct thread *td, struct linux_prlimit64_args *args) u_int which; int flags; int error; + bool exec_blocked; if (args->new == NULL && args->old != NULL) { if (linux_get_dummy_limit(td, args->resource, &rlim)) { @@ -2065,6 +2066,7 @@ linux_prlimit64(struct thread *td, struct linux_prlimit64_args *args) return (error); } + exec_blocked = false; flags = PGET_HOLD | PGET_NOTWEXIT; if (args->new != NULL) flags |= PGET_CANDEBUG; @@ -2077,6 +2079,14 @@ linux_prlimit64(struct thread *td, struct linux_prlimit64_args *args) error = pget(args->pid, flags, &p); if (error != 0) return (error); + exec_blocked = true; + PROC_LOCK(p); + execve_block_wait(td, p); + error = args->new != NULL ? p_candebug(td, p) : + p_cansee(td, p); + PROC_UNLOCK(p); + if (error != 0) + goto out; } if (args->old != NULL) { PROC_LOCK(p); @@ -2099,6 +2109,11 @@ linux_prlimit64(struct thread *td, struct linux_prlimit64_args *args) error = kern_proc_setrlimit(td, p, which, &nrlim); out: + if (exec_blocked) { + PROC_LOCK(p); + execve_unblock(td, p); + PROC_UNLOCK(p); + } PRELE(p); return (error); }
