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Subject[v3.12.y][v3.13.y-ckt][3.14.y][3.16.y-ckt][3.18.y][3.19.y][V2][PATCH 0/1] n_tty: Fix read buffer overwrite when no newline

Please consider including mainline commit fb5ef9e7da39968fec6d6f37f20a23d23740c75e
in the next v3.12.y, v3.13.y-ckt, v3.14.y, 3.16.y-ckt, 3.18.y, and 3.19.y stable releases.
It was included mainline as of v4.0-rc1. It has been tested and confirmed to resolve . This bug was introduced in v3.12-rc1 when
commit 24a89d1 was applied. This commit is not needed in stable kernels prior to

commit fb5ef9e7da39968fec6d6f37f20a23d23740c75e
Author: Peter Hurley <>
Date: Fri Jan 16 15:05:39 2015 -0500

n_tty: Fix read buffer overwrite when no newline

This commit does not apply cleanly to the kernels versions mentined, so I performed
a backport, which is in email 1/1.

The 3.12.y and 3.13.y-ckt stable releases first need a cherry pick of commit
5c32d12378313e0096ea0d450462aa638a90fb6e. This is because in commit 5c32d123
n_tty_receive_buf and n_tty_receive_buf2 were merged into n_tty_receive_buf_common,
which is where the backport makes the needed changes.


Joseph Salisbury

Peter Hurley (1):
n_tty: Fix read buffer overwrite when no newline

drivers/tty/n_tty.c | 106 +++++++++++++++++++++++++++++++++++++++-------------
1 file changed, 79 insertions(+), 27 deletions(-)


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