linux-stable

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Liu Jian 7f4116c6f9 net/tls: do not free tls_rec on async operation in bpf_exec_tx_verdict() [ Upstream commit `cfaa80c91f` ] I got the below warning when do fuzzing test: BUG: KASAN: null-ptr-deref in scatterwalk_copychunks+0x320/0x470 Read of size 4 at addr 0000000000000008 by task kworker/u8:1/9 CPU: 0 PID: 9 Comm: kworker/u8:1 Tainted: G OE Hardware name: linux,dummy-virt (DT) Workqueue: pencrypt_parallel padata_parallel_worker Call trace: dump_backtrace+0x0/0x420 show_stack+0x34/0x44 dump_stack+0x1d0/0x248 __kasan_report+0x138/0x140 kasan_report+0x44/0x6c __asan_load4+0x94/0xd0 scatterwalk_copychunks+0x320/0x470 skcipher_next_slow+0x14c/0x290 skcipher_walk_next+0x2fc/0x480 skcipher_walk_first+0x9c/0x110 skcipher_walk_aead_common+0x380/0x440 skcipher_walk_aead_encrypt+0x54/0x70 ccm_encrypt+0x13c/0x4d0 crypto_aead_encrypt+0x7c/0xfc pcrypt_aead_enc+0x28/0x84 padata_parallel_worker+0xd0/0x2dc process_one_work+0x49c/0xbdc worker_thread+0x124/0x880 kthread+0x210/0x260 ret_from_fork+0x10/0x18 This is because the value of rec_seq of tls_crypto_info configured by the user program is too large, for example, 0xffffffffffffff. In addition, TLS is asynchronously accelerated. When tls_do_encryption() returns -EINPROGRESS and sk->sk_err is set to EBADMSG due to rec_seq overflow, skmsg is released before the asynchronous encryption process ends. As a result, the UAF problem occurs during the asynchronous processing of the encryption module. If the operation is asynchronous and the encryption module returns EINPROGRESS, do not free the record information. Fixes: `635d939817` ("net/tls: free record only on encryption error") Signed-off-by: Liu Jian <liujian56@huawei.com> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Link: https://lore.kernel.org/r/20230909081434.2324940-1-liujian56@huawei.com Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-09-19 12:28:09 +02:00
arch	MIPS: Fix CONFIG_CPU_DADDI_WORKAROUNDS `modules_install' regression	2023-09-19 12:28:07 +02:00
block	blk-throttle: consider 'carryover_ios/bytes' in throtl_trim_slice()	2023-09-19 12:28:00 +02:00
certs	certs: Fix build error when PKCS#11 URI contains semicolon	2023-02-09 11:28:11 +01:00
crypto	X.509: if signature is unsupported skip validation	2023-09-13 09:43:03 +02:00
Documentation	dt-bindings: clock: xlnx,versal-clk: drop select:false	2023-09-19 12:27:57 +02:00
drivers	platform/mellanox: NVSW_SN2201 should depend on ACPI	2023-09-19 12:28:09 +02:00
fs	btrfs: use the correct superblock to compare fsid in btrfs_validate_super	2023-09-19 12:28:06 +02:00
include	bpf: Remove prog->active check for bpf_lsm and bpf_iter	2023-09-19 12:28:03 +02:00
init	sched/psi: Select KERNFS as needed	2023-09-13 09:42:28 +02:00
io_uring	io_uring: Don't set affinity on a dying sqpoll thread	2023-09-19 12:27:54 +02:00
ipc	ipc: fix memory leak in init_mqueue_fs()	2022-12-31 13:32:01 +01:00
kernel	bpf: Assign bpf_tramp_run_ctx::saved_run_ctx before recursion check.	2023-09-19 12:28:03 +02:00
lib	kunit: Fix wild-memory-access bug in kunit_free_suite_set()	2023-09-19 12:28:08 +02:00
LICENSES	LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers	2021-12-16 14:33:10 +01:00
mm	Multi-gen LRU: avoid race in inc_min_seq()	2023-09-19 12:28:04 +02:00
net	net/tls: do not free tls_rec on async operation in bpf_exec_tx_verdict()	2023-09-19 12:28:09 +02:00
rust	rust: allocator: Prevent mis-aligned allocation	2023-08-11 12:08:18 +02:00
samples	samples/bpf: fix broken map lookup probe	2023-09-13 09:42:34 +02:00
scripts	kconfig: fix possible buffer overflow	2023-09-19 12:27:59 +02:00
security	smackfs: Prevent underflow in smk_set_cipso()	2023-09-13 09:42:42 +02:00
sound	ASoC: tegra: Fix SFC conversion for few rates	2023-09-19 12:27:56 +02:00
tools	selftests: Keep symlinks, when possible	2023-09-19 12:28:08 +02:00
usr	usr/gen_init_cpio.c: remove unnecessary -1 values from int file	2022-10-03 14:21:44 -07:00
virt	kvm/vfio: ensure kvg instance stays around in kvm_vfio_group_add()	2023-09-13 09:42:46 +02:00
.clang-format	inet: ping: use hlist_nulls rcu iterator during lookup	2022-12-01 12:42:46 +01:00
.cocciconfig
.get_maintainer.ignore	get_maintainer: add Alan to .get_maintainer.ignore	2022-08-20 15:17:44 -07:00
.gitattributes	.gitattributes: use 'dts' diff driver for dts files	2019-12-04 19:44:11 -08:00
.gitignore	Kbuild: add Rust support	2022-09-28 09:02:20 +02:00
.mailmap	9 hotfixes. 6 for MM, 3 for other areas. Four of these patches address	2022-12-10 17:10:52 -08:00
.rustfmt.toml	rust: add `.rustfmt.toml`	2022-09-28 09:02:20 +02:00
COPYING	COPYING: state that all contributions really are covered by this file	2020-02-10 13:32:20 -08:00
CREDITS	MAINTAINERS: Remove Michal Marek from Kbuild maintainers	2022-11-16 14:53:00 +09:00
Kbuild	Kbuild updates for v6.1	2022-10-10 12:00:45 -07:00
Kconfig	kbuild: ensure full rebuild when the compiler is updated	2020-05-12 13:28:33 +09:00
MAINTAINERS	devlink: move code to a dedicated directory	2023-08-30 16:11:00 +02:00
Makefile	kbuild: do not run depmod for 'make modules_sign'	2023-09-19 12:27:58 +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.