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| author | Anant Thazhemadam <anant.thazhemadam@gmail.com> | 2020-10-12 09:54:04 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-11-10 10:22:14 +0100 |
| commit | 92d979f05e17349a4224215474fb9e07514b9302 (patch) | |
| tree | 4ee33b9b5248b16347f0ccf60b0551901673a5f5 /tools/perf/scripts/python | |
| parent | d5e347e84cc4929c7ddb3818b6272677080d0d3b (diff) | |
net: 9p: initialize sun_server.sun_path to have addr's value only when addr is valid
[ Upstream commit 7ca1db21ef8e0e6725b4d25deed1ca196f7efb28 ]
In p9_fd_create_unix, checking is performed to see if the addr (passed
as an argument) is NULL or not.
However, no check is performed to see if addr is a valid address, i.e.,
it doesn't entirely consist of only 0's.
The initialization of sun_server.sun_path to be equal to this faulty
addr value leads to an uninitialized variable, as detected by KMSAN.
Checking for this (faulty addr) and returning a negative error number
appropriately, resolves this issue.
Link: http://lkml.kernel.org/r/20201012042404.2508-1-anant.thazhemadam@gmail.com
Reported-by: syzbot+75d51fe5bf4ebe988518@syzkaller.appspotmail.com
Tested-by: syzbot+75d51fe5bf4ebe988518@syzkaller.appspotmail.com
Signed-off-by: Anant Thazhemadam <anant.thazhemadam@gmail.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions