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343d7fe6df
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Paulo Alcantara 343d7fe6df smb: client: fix use-after-free of signing key 
Customers have reported use-after-free in @ses->auth_key.response with
SMB2.1 + sign mounts which occurs due to following race:

task A                         task B
cifs_mount()
 dfs_mount_share()
  get_session()
   cifs_mount_get_session()    cifs_send_recv()
    cifs_get_smb_ses()          compound_send_recv()
     cifs_setup_session()        smb2_setup_request()
      kfree_sensitive()           smb2_calc_signature()
                                   crypto_shash_setkey() *UAF*

Fix this by ensuring that we have a valid @ses->auth_key.response by
checking whether @ses->ses_status is SES_GOOD or SES_EXITING with
@ses->ses_lock held.  After commit 24a9799aa8 ("smb: client: fix UAF
in smb2_reconnect_server()"), we made sure to call ->logoff() only
when @ses was known to be good (e.g. valid ->auth_key.response), so
it's safe to access signing key when @ses->ses_status == SES_EXITING.

Cc: stable@vger.kernel.org
Reported-by: Jay Shin <jaeshin@redhat.com>
Signed-off-by: Paulo Alcantara (Red Hat) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2024-11-17 22:20:54 -06:00
arch - Make sure a kdump kernel with CONFIG_IMA_KEXEC enabled and booted on an AMD 2024-11-17 09:35:51 -08:00
block block-6.12-20241101 2024-11-01 13:41:55 -10:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto This push fixes the following issues: 2024-10-16 08:42:54 -07:00
Documentation 10 hotfixes, 7 of which are cc:stable. All singletons, please see the 2024-11-16 16:00:38 -08:00
drivers drm/amdgpu regression fix for 6.12-rc8 2024-11-16 15:09:14 -08:00
fs smb: client: fix use-after-free of signing key 2024-11-17 22:20:54 -06:00
include 10 hotfixes, 7 of which are cc:stable. All singletons, please see the 2024-11-16 16:00:38 -08:00
init cfi: fix conditions for HAVE_CFI_ICALL_NORMALIZE_INTEGERS 2024-10-13 22:23:13 +02:00
io_uring io_uring/rw: fix missing NOWAIT check for O_DIRECT start write 2024-10-31 08:21:02 -06:00
ipc struct fd layout change (and conversion to accessor helpers) 2024-09-23 09:35:36 -07:00
kernel 10 hotfixes, 7 of which are cc:stable. All singletons, please see the 2024-11-16 16:00:38 -08:00
lib objpool: fix to make percpu slot allocation more robust 2024-11-07 14:14:58 -08:00
LICENSES LICENSES: add 0BSD license text 2024-09-01 20:43:24 -07:00
mm 10 hotfixes, 7 of which are cc:stable. All singletons, please see the 2024-11-16 16:00:38 -08:00
net Including fixes from bluetooth. 2024-11-14 10:05:33 -08:00
rust Driver core fix for 6.12-rc3 2024-10-13 09:10:52 -07:00
samples Including fixes from bluetooth. 2024-11-14 10:05:33 -08:00
scripts Kbuild fixes for v6.12 (2nd) 2024-11-03 08:29:02 -10:00
security integrity-v6.12 2024-11-12 13:06:31 -08:00
sound ASoC: Fixes for v6.12 2024-11-14 16:40:15 +01:00
tools 10 hotfixes, 7 of which are cc:stable. All singletons, please see the 2024-11-16 16:00:38 -08:00
usr initramfs: shorten cmd_initfs in usr/Makefile 2024-07-16 01:07:52 +09:00
virt ARM64: 2024-10-21 11:22:04 -07:00
.clang-format clang-format: Update with v6.11-rc1's for_each macro list 2024-08-02 13:20:31 +02:00
.cocciconfig
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore Add Jeff Kirsher to .get_maintainer.ignore 2024-03-08 11:36:54 +00:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore Kbuild updates for v6.12 2024-09-24 13:02:06 -07:00
.mailmap mailmap: add entry for Thorsten Blum 2024-11-07 14:14:59 -08:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING
CREDITS MAINTAINERS: Remove self from DSA entry 2024-11-03 12:52:38 -08:00
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 Including fixes from bluetooth. 2024-11-14 10:05:33 -08:00
Makefile Linux 6.12 2024-11-17 14:15:08 -08:00
README README: Fix spelling 2024-03-18 03:36:32 -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 reStructuredText 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.