netdev - [PATCH net v3 0/2] mptcp: Prevent tcp_push() crash and selftest temp file buildup

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Wed,  1 Sep 2021 10:15:35 -0700
From:   Mat Martineau <mathew.j.martineau@...ux.intel.com>
To:     netdev@...r.kernel.org
Cc:     Mat Martineau <mathew.j.martineau@...ux.intel.com>,
        davem@...emloft.net, kuba@...nel.org, matthieu.baerts@...sares.net,
        mptcp@...ts.linux.dev, pabeni@...hat.com
Subject: [PATCH net v3 0/2] mptcp: Prevent tcp_push() crash and selftest temp file buildup

These are two fixes for the net tree, addressing separate issues.

Patch 1 addresses a divide-by-zero crash seen in syzkaller and also
reported by a user on the netdev list. This changes MPTCP code so
tcp_push() cannot be called with an invalid (0) mss_now value.

Patch 2 fixes a selftest temp file cleanup issue that consumes excessive
disk space when running repeated tests.


v3: Respin after net-next merge

v2: Make suggested changes to lockdep check and indentation in patch 1


Matthieu Baerts (1):
  selftests: mptcp: clean tmp files in simult_flows

Paolo Abeni (1):
  mptcp: fix possible divide by zero

 net/mptcp/protocol.c                          | 76 +++++++++----------
 .../selftests/net/mptcp/simult_flows.sh       |  4 +-
 2 files changed, 37 insertions(+), 43 deletions(-)


base-commit: 780aa1209f88fd96d40572b62df922662f2b896d
-- 
2.33.0