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linux/drivers/tty
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Jeongjun Park 23c4cb8a56 vt: prevent kernel-infoleak in con_font_get() 
commit f956052e00 upstream.

font.data may not initialize all memory spaces depending on the implementation
of vc->vc_sw->con_font_get. This may cause info-leak, so to prevent this, it
is safest to modify it to initialize the allocated memory space to 0, and it
generally does not affect the overall performance of the system.

Cc: stable@vger.kernel.org
Reported-by: syzbot+955da2d57931604ee691@syzkaller.appspotmail.com
Fixes: 05e2600cb0 ("VT: Bump font size limitation to 64x128 pixels")
Signed-off-by: Jeongjun Park <aha310510@gmail.com>
Link: https://lore.kernel.org/r/20241010174619.59662-1-aha310510@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2024-11-08 16:26:48 +01:00
..
hvc hvc/xen: fix event channel handling for secondary consoles 2023-11-28 17:07:08 +00:00
ipwireless tty: drop put_tty_driver 2021-07-27 12:17:21 +02:00
serdev tty: Replace acpi_bus_get_device() 2022-01-31 14:30:06 +01:00
serial serial: protect uart_port_dtr_rts() in uart_shutdown() too 2024-11-01 01:56:07 +01:00
vt vt: prevent kernel-infoleak in con_font_get() 2024-11-08 16:26:48 +01:00
amiserial.c tty: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
ehv_bytechan.c tty: drop put_tty_driver 2021-07-27 12:17:21 +02:00
goldfish.c tty: goldfish: Fix free_irq() on remove 2022-06-10 13:31:31 +02:00
Kconfig tty: add rpmsg driver 2021-10-21 12:35:35 +02:00
Makefile tty: add rpmsg driver 2021-10-21 12:35:35 +02:00
mips_ejtag_fdc.c serial: Convert SERIAL_XMIT_SIZE to UART_XMIT_SIZE 2022-06-27 14:41:31 +02:00
moxa.c tty: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
mxser.c tty: mxser: remove redundant assignment to hwid 2022-09-01 17:59:36 +02:00
n_gsm.c tty: n_gsm: Fix use-after-free in gsm_cleanup_mux 2024-10-22 15:56:50 +02:00
n_hdlc.c tty: n_hdlc: remove HDLC_MAGIC 2022-09-22 16:12:34 +02:00
n_null.c tty: make tty_ldisc_ops a param in tty_unregister_ldisc 2021-05-13 16:57:16 +02:00
n_tty.c tty: n_tty: Fix buffer offsets when lookahead is used 2024-06-21 14:35:43 +02:00
nozomi.c tty: drop put_tty_driver 2021-07-27 12:17:21 +02:00
pty.c tty: Make ->set_termios() old ktermios const 2022-08-30 14:22:35 +02:00
rpmsg_tty.c tty: rpmsg: Fix race condition releasing tty port 2022-01-26 14:50:26 +01:00
synclink_gt.c tty: synclink_gt: remove MGSL_MAGIC 2022-09-22 16:12:34 +02:00
sysrq.c tty/sysrq: replace smp_processor_id() with get_cpu() 2023-11-28 17:07:08 +00:00
tty.h tty: change tty_write_lock()'s ndelay parameter to bool 2024-01-25 15:27:47 -08:00
tty_audit.c tty: audit: move some local functions out of tty.h 2021-04-15 10:24:58 +02:00
tty_baudrate.c tty: Fix comment style in tty_termios_input_baud_rate() 2022-08-30 14:22:34 +02:00
tty_buffer.c tty: Fix lookahead_buf crash with serdev 2022-08-30 14:31:53 +02:00
tty_io.c usb: cdc-acm: return correct error code on unsupported break 2024-01-25 15:27:47 -08:00
tty_ioctl.c tty: allow TIOCSLCKTRMIOS with CAP_CHECKPOINT_RESTORE 2024-02-05 20:12:58 +00:00
tty_jobctrl.c tty: tty_jobctrl: fix pid memleak in disassociate_ctty() 2023-11-20 11:52:09 +01:00
tty_ldisc.c tty: add the option to have a tty reject a new ldisc 2024-06-27 13:46:17 +02:00
tty_ldsem.c tty/ldsem: Fix syntax errors in comments 2021-12-21 09:15:49 +01:00
tty_mutex.c tty: remove TTY_MAGIC 2022-09-22 16:12:34 +02:00
tty_port.c tty: Implement lookahead to process XON/XOFF timely 2022-06-10 13:51:31 +02:00
ttynull.c tty: drop put_tty_driver 2021-07-27 12:17:21 +02:00
vcc.c tty: vcc: Add check for kstrdup() in vcc_probe() 2023-11-28 17:07:01 +00:00