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Florent Revest 5ffda6998b team: Fix use-after-free when an option instance allocation fails 
commit c12296bbec upstream.

In __team_options_register, team_options are allocated and appended to
the team's option_list.
If one option instance allocation fails, the "inst_rollback" cleanup
path frees the previously allocated options but doesn't remove them from
the team's option_list.
This leaves dangling pointers that can be dereferenced later by other
parts of the team driver that iterate over options.

This patch fixes the cleanup path to remove the dangling pointers from
the list.

As far as I can tell, this uaf doesn't have much security implications
since it would be fairly hard to exploit (an attacker would need to make
the allocation of that specific small object fail) but it's still nice
to fix.

Cc: stable@vger.kernel.org
Fixes: 80f7c6683f ("team: add support for per-port options")
Signed-off-by: Florent Revest <revest@chromium.org>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Hangbin Liu <liuhangbin@gmail.com>
Link: https://lore.kernel.org/r/20231206123719.1963153-1-revest@chromium.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-12-20 15:44:37 +01:00
arch arm64: mm: Always make sw-dirty PTEs hw-dirty in pte_modify 2023-12-20 15:44:37 +01:00
block blk-throttle: fix lockdep warning of "cgroup_mutex or RCU read lock required!" 2023-12-20 15:44:31 +01:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:13:17 +02:00
crypto crypto: pcrypt - Fix hungtask for PADATA_RESET 2023-11-28 16:54:51 +00:00
Documentation platform/x86: asus-wmi: Document the dgpu_disable sysfs attribute 2023-12-13 18:27:06 +01:00
drivers team: Fix use-after-free when an option instance allocation fails 2023-12-20 15:44:37 +01:00
fs ext4: prevent the normalized size from exceeding EXT_MAX_BLOCKS 2023-12-20 15:44:37 +01:00
include asm-generic: qspinlock: fix queued_spin_value_unlocked() implementation 2023-12-20 15:44:35 +01:00
init x86/mm: Initialize text poking earlier 2023-08-08 19:57:39 +02:00
io_uring io_uring/af_unix: disable sending io_uring over sockets 2023-12-13 18:27:06 +01:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:24:00 +01:00
kernel perf: Fix perf_event_validate_size() lockdep splat 2023-12-20 15:44:36 +01:00
lib parisc: Drop the HP-UX ENOSYM and EREMOTERELEASE error codes 2023-12-08 08:46:12 +01:00
LICENSES
mm mm: kmem: drop __GFP_NOFAIL when allocating objcg vectors 2023-11-28 16:55:01 +00:00
net appletalk: Fix Use-After-Free in atalk_ioctl 2023-12-20 15:44:29 +01:00
samples samples/hw_breakpoint: fix building without module unloading 2023-09-23 11:01:09 +02:00
scripts sign-file: Fix incorrect return values check 2023-12-20 15:44:29 +01:00
security ima: annotate iint mutex to avoid lockdep false positive warnings 2023-12-08 08:46:15 +01:00
sound ALSA: hda/realtek: Apply mute LED quirk for HP15-db 2023-12-20 15:44:30 +01:00
tools tools headers UAPI: Sync linux/perf_event.h with the kernel sources 2023-12-13 18:27:06 +01:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2022-02-01 17:25:48 +01:00
virt KVM: fix memoryleak in kvm_init() 2023-04-05 11:23:43 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
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.gitignore kbuild: generate Module.symvers only when vmlinux exists 2021-05-19 10:12:59 +02:00
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COPYING
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Kbuild
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MAINTAINERS Remove DECnet support from kernel 2023-06-21 15:45:38 +02:00
Makefile Linux 5.10.204 2023-12-13 18:27:07 +01:00
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.