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Sumanth Gavini cd55c13bbb Bluetooth: hci_sync: Fix UAF on hci_abort_conn_sync 
commit 5af1f84ed1 upstream.

Connections may be cleanup while waiting for the commands to complete so
this attempts to check if the connection handle remains valid in case of
errors that would lead to call hci_conn_failed:

BUG: KASAN: slab-use-after-free in hci_conn_failed+0x1f/0x160
Read of size 8 at addr ffff888001376958 by task kworker/u3:0/52

CPU: 0 PID: 52 Comm: kworker/u3:0 Not tainted
6.5.0-rc1-00527-g2dfe76d58d3a #5615
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS
1.16.2-1.fc38 04/01/2014
Workqueue: hci0 hci_cmd_sync_work
Call Trace:
 <TASK>
 dump_stack_lvl+0x1d/0x70
 print_report+0xce/0x620
 ? __virt_addr_valid+0xd4/0x150
 ? hci_conn_failed+0x1f/0x160
 kasan_report+0xd1/0x100
 ? hci_conn_failed+0x1f/0x160
 hci_conn_failed+0x1f/0x160
 hci_abort_conn_sync+0x237/0x360

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sumanth Gavini <sumanth.gavini@yahoo.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-08-28 16:26:12 +02:00
arch KVM: x86: Take irqfds.lock when adding/deleting IRQ bypass producer 2025-08-28 16:26:12 +02:00
block block: reject invalid operation in submit_bio_noacct 2025-08-28 16:26:10 +02:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2025-04-25 10:44:04 +02:00
crypto crypto: xts - Only add ecb if it is not already there 2025-06-27 11:07:06 +01:00
Documentation dt-bindings: display: sprd,sharkl3-dsi-host: Fix missing clocks constraints 2025-08-28 16:26:06 +02:00
drivers crypto: qat - fix ring to service map for QAT GEN4 2025-08-28 16:26:12 +02:00
fs mm: update memfd seal write check to include F_SEAL_WRITE 2025-08-28 16:26:12 +02:00
include mm: reinstate ability to map write-sealed memfd mappings read-only 2025-08-28 16:26:12 +02:00
init sched/isolation: Make CONFIG_CPU_ISOLATION depend on CONFIG_SMP 2025-05-02 07:47:04 +02:00
io_uring io_uring/poll: fix POLLERR handling 2025-07-24 08:51:48 +02:00
ipc ipc: fix to protect IPCS lookups using RCU 2025-06-27 11:07:30 +01:00
kernel mm: drop the assumption that VM_SHARED always implies writable 2025-08-28 16:26:12 +02:00
lib maple_tree: fix mt_destroy_walk() on root leaf node 2025-07-17 18:32:09 +02:00
LICENSES
mm mm: reinstate ability to map write-sealed memfd mappings read-only 2025-08-28 16:26:12 +02:00
net Bluetooth: hci_sync: Fix UAF on hci_abort_conn_sync 2025-08-28 16:26:12 +02:00
rust rust: module: place cleanup_module() in .exit.text section 2025-07-06 10:57:54 +02:00
samples samples: mei: Fix building on musl libc 2025-08-15 12:04:55 +02:00
scripts kconfig: lxdialog: fix 'space' to (de)select options 2025-08-28 16:26:02 +02:00
security apparmor: use the condition in AA_BUG_FMT even with debug disabled 2025-08-28 16:26:01 +02:00
sound ASoC: fsl_sai: replace regmap_write with regmap_update_bits 2025-08-28 16:26:03 +02:00
tools selftests/memfd: add test for mapping write-sealed memfd read-only 2025-08-28 16:26:12 +02:00
usr kbuild: hdrcheck: fix cross build with clang 2025-06-27 11:07:25 +01:00
virt KVM: Fix a data race on last_boosted_vcpu in kvm_vcpu_on_spin() 2024-06-27 13:46:21 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore Remove *.orig pattern from .gitignore 2024-10-17 15:21:15 +02:00
.mailmap
.rustfmt.toml
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS sign-file,extract-cert: move common SSL helper functions to a header 2025-04-25 10:44:04 +02:00
Makefile Linux 6.1.148 2025-08-15 12:05:13 +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.