laforge has submitted this change. ( https://gerrit.osmocom.org/c/libosmocore/+/35912?usp=email ) ( 7 is the latest approved patch-set. No files were changed between the latest approved patch-set and the submitted one. )Change subject: osmo_io: Reject writing messages with length of 0 ...................................................................... osmo_io: Reject writing messages with length of 0 io_uring will reject to transmit messages with length of 0. Change-Id: I94be5ec7344d92157f7853c6c0ddf7007513ba8e Related: OS#5751 --- M src/core/osmo_io.c 1 file changed, 27 insertions(+), 0 deletions(-) Approvals: pespin: Looks good to me, approved laforge: Looks good to me, but someone else must approve Jenkins Builder: Verified diff --git a/src/core/osmo_io.c b/src/core/osmo_io.c index 5d25f66..472edf9 100644 --- a/src/core/osmo_io.c +++ b/src/core/osmo_io.c @@ -409,6 +409,11 @@ { int rc; + if (OSMO_UNLIKELY(msgb_length(msg) == 0)) { + LOGPIO(iofd, LOGL_ERROR, "Length is 0, rejecting msgb.\n"); + return -EINVAL; + } + OSMO_ASSERT(iofd->mode == OSMO_IO_FD_MODE_READ_WRITE); if (OSMO_UNLIKELY(!iofd->io_ops.write_cb)) { LOGPIO(iofd, LOGL_ERROR, "write_cb not set, Rejecting msgb\n"); @@ -451,6 +456,11 @@ { int rc; + if (OSMO_UNLIKELY(msgb_length(msg) == 0)) { + LOGPIO(iofd, LOGL_ERROR, "Length is 0, rejecting msgb.\n"); + return -EINVAL; + } + OSMO_ASSERT(iofd->mode == OSMO_IO_FD_MODE_RECVFROM_SENDTO); if (OSMO_UNLIKELY(!iofd->io_ops.sendto_cb)) { LOGPIO(iofd, LOGL_ERROR, "sendto_cb not set, Rejecting msgb\n"); @@ -499,6 +509,11 @@ int rc; struct iofd_msghdr *msghdr; + if (OSMO_UNLIKELY(msgb_length(msg) == 0)) { + LOGPIO(iofd, LOGL_ERROR, "Length is 0, rejecting msgb.\n"); + return -EINVAL; + } + OSMO_ASSERT(iofd->mode == OSMO_IO_FD_MODE_RECVMSG_SENDMSG); if (OSMO_UNLIKELY(!iofd->io_ops.sendmsg_cb)) { LOGPIO(iofd, LOGL_ERROR, "sendmsg_cb not set, Rejecting msgb\n"); -- To view, visit https://gerrit.osmocom.org/c/libosmocore/+/35912?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: libosmocore Gerrit-Branch: master Gerrit-Change-Id: I94be5ec7344d92157f7853c6c0ddf7007513ba8e Gerrit-Change-Number: 35912 Gerrit-PatchSet: 9 Gerrit-Owner: jolly <andreas(a)eversberg.eu> Gerrit-Reviewer: Jenkins Builder Gerrit-Reviewer: daniel <dwillmann(a)sysmocom.de> Gerrit-Reviewer: laforge <laforge(a)osmocom.org> Gerrit-Reviewer: pespin <pespin(a)sysmocom.de> Gerrit-MessageType: merged