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| author | Kees Cook <keescook@chromium.org> | 2019-07-29 23:47:22 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-07-30 00:00:14 +0200 |
| commit | 71d6c505b4d9e6f76586350450e785e3d452b346 (patch) | |
| tree | cc33745e8a9c69bdfcf813737379f4f42bce725d /drivers/nvme | |
| parent | ataflop: Mark expected switch fall-through (diff) | |
| download | linux-71d6c505b4d9e6f76586350450e785e3d452b346.tar.xz linux-71d6c505b4d9e6f76586350450e785e3d452b346.zip | |
libata: zpodd: Fix small read overflow in zpodd_get_mech_type()
Jeffrin reported a KASAN issue:
BUG: KASAN: global-out-of-bounds in ata_exec_internal_sg+0x50f/0xc70
Read of size 16 at addr ffffffff91f41f80 by task scsi_eh_1/149
...
The buggy address belongs to the variable:
cdb.48319+0x0/0x40
Much like commit 18c9a99bce2a ("libata: zpodd: small read overflow in
eject_tray()"), this fixes a cdb[] buffer length, this time in
zpodd_get_mech_type():
We read from the cdb[] buffer in ata_exec_internal_sg(). It has to be
ATAPI_CDB_LEN (16) bytes long, but this buffer is only 12 bytes.
Reported-by: Jeffrin Jose T <jeffrin@rajagiritech.edu.in>
Fixes: afe759511808c ("libata: identify and init ZPODD devices")
Link: https://lore.kernel.org/lkml/201907181423.E808958@keescook/
Tested-by: Jeffrin Jose T <jeffrin@rajagiritech.edu.in>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/nvme')
0 files changed, 0 insertions, 0 deletions