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Cong Wang 8bbb9e4e0e gtp: fix a potential NULL pointer dereference 
[ Upstream commit defd8b3c37b0f9cb3e0f60f47d3d78d459d57fda ]

When sockfd_lookup() fails, gtp_encap_enable_socket() returns a
NULL pointer, but its callers only check for error pointers thus miss
the NULL pointer case.

Fix it by returning an error pointer with the error code carried from
sockfd_lookup().

(I found this bug during code inspection.)

Fixes: 1e3a3abd8b ("gtp: make GTP sockets in gtp_newlink optional")
Cc: Andreas Schultz <aschultz@tpip.net>
Cc: Harald Welte <laforge@gnumonks.org>
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Pablo Neira Ayuso <pablo@netfilter.org>
Link: https://patch.msgid.link/20240825191638.146748-1-xiyou.wangcong@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-09-04 13:17:46 +02:00
arch KVM: arm64: Don't use cbz/adr with external symbols 2024-09-04 13:17:44 +02:00
block block/ioctl: prefer different overflow check 2024-07-05 09:12:33 +02:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:13:17 +02:00
crypto crypto: aead,cipher - zeroize key buffer after use 2024-07-18 13:05:38 +02:00
Documentation arm64: cpufeature: Fix the visibility of compat hwcaps 2024-08-19 05:41:23 +02:00
drivers gtp: fix a potential NULL pointer dereference 2024-09-04 13:17:46 +02:00
fs ovl: do not fail because of O_NOATIME 2024-09-04 13:17:45 +02:00
include binfmt_misc: pass binfmt_misc flags to the interpreter 2024-09-04 13:17:42 +02:00
init init/main.c: Fix potential static_command_line memory overflow 2024-05-02 16:23:39 +02:00
io_uring io_uring/io-wq: limit retrying worker initialisation 2024-08-19 05:41:03 +02:00
ipc ipc: replace costly bailout check in sysvipc_find_ipc() 2024-09-04 13:17:44 +02:00
kernel cgroup/cpuset: Prevent UAF in proc_cpuset_show() 2024-09-04 13:17:45 +02:00
lib bitmap: introduce generic optimized bitmap_size() 2024-09-04 13:17:30 +02:00
LICENSES LICENSES/deprecated: add Zlib license text 2020-09-16 14:33:49 +02:00
mm memcg_write_event_control(): fix a user-triggerable oops 2024-09-04 13:17:30 +02:00
net ethtool: check device is present when getting link settings 2024-09-04 13:17:46 +02:00
samples Add gitignore file for samples/fanotify/ subdirectory 2024-08-19 05:41:21 +02:00
scripts kbuild: Fix '-S -c' in x86 stack protector scripts 2024-08-19 05:40:59 +02:00
security selinux: fix potential counting error in avc_add_xperms_decision() 2024-09-04 13:17:30 +02:00
sound ALSA: timer: Relax start tick time check for slave timer elements 2024-09-04 13:17:43 +02:00
tools tools: move alignment-related macros to new <linux/align.h> 2024-09-04 13:17:44 +02:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2022-02-01 17:25:48 +01:00
virt KVM: Always flush async #PF workqueue when vCPU is being destroyed 2024-04-13 12:58:04 +02:00
.clang-format RDMA 5.10 pull request 2020-10-17 11:18:18 -07:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore kbuild: generate Module.symvers only when vmlinux exists 2021-05-19 10:12:59 +02:00
.mailmap mailmap: add two more addresses of Uwe Kleine-König 2020-12-06 10:19:07 -08:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Move Jason Cooper to CREDITS 2020-11-30 10:20:34 +01:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Remove DECnet support from kernel 2023-06-21 15:45:38 +02:00
Makefile Linux 5.10.224 2024-08-19 05:41:24 +02:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.