The branch stable/13 has been updated by emaste: URL: https://cgit.FreeBSD.org/src/commit/?id=533a942a213c9e852265f94d27f1e9768294eaa6
commit 533a942a213c9e852265f94d27f1e9768294eaa6 Author: Ed Maste <[email protected]> AuthorDate: 2022-11-03 17:17:40 +0000 Commit: Ed Maste <[email protected]> CommitDate: 2023-04-21 13:45:30 +0000 sftp: avoid leaking path arg in calls to make_absolute_pwd_glob As Coverity reports: Overwriting tmp in tmp = make_absolute_pwd_glob(tmp, remote_path) leaks the storage that tmp points to. Consume the first arg in make_absolute_pwd_glob, and add xstrdup() to the one case which did not assign to the same variable that was passed in. With this change make_absolute() and make_absolute_pwd_glob() have the same semantics with respect to freeing the input string. This change was reported to OpenSSH in https://lists.mindrot.org/pipermail/openssh-unix-dev/2022-November/040497.html [and was later adopted upstream]. Reported by: Coverity Scan CID: 1500409 Reviewed by: markj Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D37253 (cherry picked from commit 69c72a57af843267b220f8367c4cc7162a12d696) --- crypto/openssh/sftp.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/crypto/openssh/sftp.c b/crypto/openssh/sftp.c index 29081db3d434..ce7ab7f8f2fe 100644 --- a/crypto/openssh/sftp.c +++ b/crypto/openssh/sftp.c @@ -617,14 +617,14 @@ escape_glob(const char *s) } static char * -make_absolute_pwd_glob(const char *p, const char *pwd) +make_absolute_pwd_glob(char *p, const char *pwd) { char *ret, *escpwd; escpwd = escape_glob(pwd); if (p == NULL) return escpwd; - ret = make_absolute(xstrdup(p), escpwd); + ret = make_absolute(p, escpwd); free(escpwd); return ret; } @@ -637,7 +637,7 @@ process_get(struct sftp_conn *conn, const char *src, const char *dst, glob_t g; int i, r, err = 0; - abs_src = make_absolute_pwd_glob(src, pwd); + abs_src = make_absolute_pwd_glob(xstrdup(src), pwd); memset(&g, 0, sizeof(g)); debug3("Looking up %s", abs_src); @@ -1997,9 +1997,7 @@ complete_match(EditLine *el, struct sftp_conn *conn, char *remote_path, memset(&g, 0, sizeof(g)); if (remote != LOCAL) { - tmp2 = make_absolute_pwd_glob(tmp, remote_path); - free(tmp); - tmp = tmp2; + tmp = make_absolute_pwd_glob(tmp, remote_path); remote_glob(conn, tmp, GLOB_DOOFFS|GLOB_MARK, NULL, &g); } else glob(tmp, GLOB_DOOFFS|GLOB_MARK, NULL, &g);
