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Filename Latest commit message Latest commit date
Christophe JAILLET 5f8174bfb9 SUNRPC: Fix a potential buffer overflow in 'svc_print_xprts()' 
[ Upstream commit b25b60d7bfb02a74bc3c2d998e09aab159df8059 ]

'maxlen' is the total size of the destination buffer. There is only one
caller and this value is 256.

When we compute the size already used and what we would like to add in
the buffer, the trailling NULL character is not taken into account.
However, this trailling character will be added by the 'strcat' once we
have checked that we have enough place.

So, there is a off-by-one issue and 1 byte of the stack could be
erroneously overwridden.

Take into account the trailling NULL, when checking if there is enough
place in the destination buffer.

While at it, also replace a 'sprintf' by a safer 'snprintf', check for
output truncation and avoid a superfluous 'strlen'.

Fixes: dc9a16e49d ("svc: Add /proc/sys/sunrpc/transport files")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
[ cel: very minor fix to documenting comment
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-10-01 13:17:50 +02:00
arch KVM: LAPIC: Mark hrtimer for period or oneshot mode to expire in hard interrupt context 2020-10-01 13:17:45 +02:00
block block: only call sched requeue_request() for scheduled requests 2020-09-23 12:40:37 +02:00
certs
crypto
Documentation
drivers scsi: hpsa: correct race condition in offload enabled 2020-10-01 13:17:50 +02:00
fs xfs: prohibit fs freezing when using empty transactions 2020-10-01 13:17:49 +02:00
include exec: Add exec_update_mutex to replace cred_guard_mutex 2020-10-01 13:17:47 +02:00
init exec: Add exec_update_mutex to replace cred_guard_mutex 2020-10-01 13:17:47 +02:00
ipc
kernel perf: Use new infrastructure to fix deadlocks in execve 2020-10-01 13:17:48 +02:00
lib kernel/sysctl-test: Add null pointer test for sysctl.c:proc_dointvec() 2020-10-01 13:17:10 +02:00
LICENSES
mm mm: avoid data corruption on CoW fault into PFN-mapped VMA 2020-10-01 13:17:39 +02:00
net SUNRPC: Fix a potential buffer overflow in 'svc_print_xprts()' 2020-10-01 13:17:50 +02:00
samples
scripts
security selinux: sel_avc_get_stat_idx should increase position index 2020-10-01 13:17:32 +02:00
sound ASoC: SOF: ipc: check ipc return value before data copy 2020-10-01 13:17:37 +02:00
tools selftests/ptrace: add test cases for dead-locks 2020-10-01 13:17:48 +02:00
usr
virt KVM: fix overflow of zero page refcount with ksm running 2020-10-01 13:17:31 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
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COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.68 2020-09-26 18:03:16 +02:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.