[PATCH v6 3/4] media: dvb-core: remove defective and unsafe ULE debug block
From: Breno Rodrigues Alves <hidden>
Date: 2026-09-05 12:35:06
Also in:
linux-clk, linux-input, linux-media, linux-pci, linux-security-module, linux-sound, linux-staging, linux-usb, lkml
Subsystem:
media input infrastructure (v4l/dvb), the rest · Maintainers:
Mauro Carvalho Chehab, Linus Torvalds
Completely purge the unmaintained DVB_ULE_DEBUG code block from dvb_net.c due to severe lockless race conditions and buffer overflow vulnerabilities on global network state variables. Assisted-by: OpenCode AI Signed-off-by: Breno Rodrigues Alves <redacted> --- drivers/media/dvb-core/dvb_net.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/media/dvb-core/dvb_net.c b/drivers/media/dvb-core/dvb_net.c
index a2159b2bc..3b503695e 100644
--- a/drivers/media/dvb-core/dvb_net.c
+++ b/drivers/media/dvb-core/dvb_net.c@@ -68,7 +68,7 @@ static inline __u32 iov_crc32( __u32 c, struct kvec *iov, unsigned int cnt ) #define DVB_NET_MULTICAST_MAX 10 -#ifdef DVB_ULE_DEBUG +#ifdef CONFIG_DVB_ULE_DEBUG /* * The code inside DVB_ULE_DEBUG keeps a history of the * last 100 TS cells processed.
@@ -320,7 +320,7 @@ static int dvb_net_ule_new_ts_cell(struct dvb_net_ule_handle *h) { /* We are about to process a new TS cell. */ -#ifdef DVB_ULE_DEBUG +#ifdef CONFIG_DVB_ULE_DEBUG if (ule_where >= &ule_hist[100*TS_SZ]) ule_where = ule_hist; memcpy(ule_where, h->ts, TS_SZ);
@@ -659,7 +659,7 @@ static void dvb_net_ule_check_crc(struct dvb_net_ule_handle *h, h->ts_remain > 2 ? *(unsigned short *)h->from_where : 0); - #ifdef DVB_ULE_DEBUG + #ifdef CONFIG_DVB_ULE_DEBUG hexdump(iov[0].iov_base, iov[0].iov_len); hexdump(iov[1].iov_base, iov[1].iov_len); hexdump(iov[2].iov_base, iov[2].iov_len);
--
2.43.0