From: Dinghao Liu dinghao.liu@zju.edu.cn
mainline inclusion from mainline-v5.11-rc1 commit 167faadfcf9339088910e9e85a1b711fcbbef8e9 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I635IG CVE: CVE-2022-45884
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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When device_create() fails, dvbdev and dvbdevfops should be freed just like when dvb_register_media_device() fails.
Signed-off-by: Dinghao Liu dinghao.liu@zju.edu.cn Signed-off-by: Sean Young sean@mess.org Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.org Signed-off-by: liwei liwei728@huawei.com --- drivers/media/dvb-core/dvbdev.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c index ec9ebff28552..3862ddc86ec4 100644 --- a/drivers/media/dvb-core/dvbdev.c +++ b/drivers/media/dvb-core/dvbdev.c @@ -540,6 +540,9 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev, if (IS_ERR(clsdev)) { pr_err("%s: failed to create device dvb%d.%s%d (%ld)\n", __func__, adap->num, dnames[type], id, PTR_ERR(clsdev)); + dvb_media_device_free(dvbdev); + kfree(dvbdevfops); + kfree(dvbdev); return PTR_ERR(clsdev); } dprintk("DVB: register adapter%d/%s%d @ minor: %i (0x%02x)\n",