diff options
Diffstat (limited to 'debian/patches/0720-mustek_usb2-Avoid-stack-smashing.patch')
| -rw-r--r-- | debian/patches/0720-mustek_usb2-Avoid-stack-smashing.patch | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/debian/patches/0720-mustek_usb2-Avoid-stack-smashing.patch b/debian/patches/0720-mustek_usb2-Avoid-stack-smashing.patch new file mode 100644 index 0000000..747bcde --- /dev/null +++ b/debian/patches/0720-mustek_usb2-Avoid-stack-smashing.patch @@ -0,0 +1,88 @@ +From 93340afddfbc4085a5297fe635b65dd7f7f3ef05 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Bernhard=20=C3=9Cbelacker?= <bernhardu@mailbox.org> +Date: Mon, 17 Dec 2018 00:05:43 +0100 +Subject: [PATCH] mustek_usb2: Avoid stack smashing. Fixes #35 + +Use a properly sized variable in call to sanei_usb_{read,write}_bulk. + +Debian-Bug: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=886777 +Debian-Bug: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=907972 +--- + backend/mustek_usb2_asic.c | 18 ++++++++++++++---- + 1 file changed, 14 insertions(+), 4 deletions(-) + +diff --git a/backend/mustek_usb2_asic.c b/backend/mustek_usb2_asic.c +index b5f3b0a4..b31c7494 100644 +--- a/backend/mustek_usb2_asic.c ++++ b/backend/mustek_usb2_asic.c +@@ -255,6 +255,7 @@ Mustek_DMARead (PAsic chip, unsigned int size, SANE_Byte * lpdata) + STATUS status = STATUS_GOOD; + unsigned int i, buf[1]; + unsigned int read_size; ++ size_t read_size_usb; + + DBG (DBG_ASIC, "Mustek_DMARead: Enter\n"); + +@@ -268,9 +269,11 @@ Mustek_DMARead (PAsic chip, unsigned int size, SANE_Byte * lpdata) + SetRWSize (chip, 1, buf[0]); + status = WriteIOControl (chip, 0x03, 0, 4, (SANE_Byte *) (buf)); + ++ read_size_usb = buf[0]; + status = + sanei_usb_read_bulk (chip->fd, lpdata + i * read_size, +- (size_t *) buf); ++ &read_size_usb); ++ buf[0] = read_size_usb; + if (status != STATUS_GOOD) + { + DBG (DBG_ERR, "Mustek_DMARead: read error\n"); +@@ -284,9 +287,11 @@ Mustek_DMARead (PAsic chip, unsigned int size, SANE_Byte * lpdata) + SetRWSize (chip, 1, buf[0]); + status = WriteIOControl (chip, 0x03, 0, 4, (SANE_Byte *) (buf)); + ++ read_size_usb = buf[0]; + status = + sanei_usb_read_bulk (chip->fd, lpdata + i * read_size, +- (size_t *) buf); ++ &read_size_usb); ++ buf[0] = read_size_usb; + if (status != STATUS_GOOD) + { + DBG (DBG_ERR, "Mustek_DMARead: read error\n"); +@@ -307,6 +312,7 @@ Mustek_DMAWrite (PAsic chip, unsigned int size, SANE_Byte * lpdata) + unsigned int buf[1]; + unsigned int i; + unsigned int write_size; ++ size_t write_size_usb; + + DBG (DBG_ASIC, "Mustek_DMAWrite: Enter:size=%d\n", size); + +@@ -320,9 +326,11 @@ Mustek_DMAWrite (PAsic chip, unsigned int size, SANE_Byte * lpdata) + SetRWSize (chip, 0, buf[0]); + WriteIOControl (chip, 0x02, 0, 4, (SANE_Byte *) buf); + ++ write_size_usb = buf[0]; + status = + sanei_usb_write_bulk (chip->fd, lpdata + i * write_size, +- (size_t *) buf); ++ &write_size_usb); ++ buf[0] = write_size_usb; + if (status != STATUS_GOOD) + { + DBG (DBG_ERR, "Mustek_DMAWrite: write error\n"); +@@ -337,9 +345,11 @@ Mustek_DMAWrite (PAsic chip, unsigned int size, SANE_Byte * lpdata) + SetRWSize (chip, 0, buf[0]); + WriteIOControl (chip, 0x02, 0, 4, (SANE_Byte *) buf); + ++ write_size_usb = buf[0]; + status = + sanei_usb_write_bulk (chip->fd, lpdata + i * write_size, +- (size_t *) buf); ++ &write_size_usb); ++ buf[0] = write_size_usb; + if (status != STATUS_GOOD) + { + DBG (DBG_ERR, "Mustek_DMAWrite: write error\n"); +-- +2.18.1 + |