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| Filename | Latest commit message | Latest commit date |
|---|---|---|
f0078dc675
[ Upstream commit 0dfbd5ecf28cbcb81674c49d34ee97366db1be44 ]
Private data passed to iwarp_cm_handler is copied for connection request /
response, but ignored otherwise. If junk is passed, it is stored in the
event and used later in the event processing.
The driver passes an old junk pointer during connection close which leads
to a use-after-free on event processing. Set private data to NULL for
events that don 't have private data.
BUG: KASAN: use-after-free in ucma_event_handler+0x532/0x560 [rdma_ucm]
kernel: Read of size 4 at addr ffff8886caa71200 by task kworker/u128:1/5250
kernel:
kernel: Workqueue: iw_cm_wq cm_work_handler [iw_cm]
kernel: Call Trace:
kernel: dump_stack+0x8c/0xc0
kernel: print_address_description.constprop.0+0x1b/0x210
kernel: ? ucma_event_handler+0x532/0x560 [rdma_ucm]
kernel: ? ucma_event_handler+0x532/0x560 [rdma_ucm]
kernel: __kasan_report.cold+0x1a/0x33
kernel: ? ucma_event_handler+0x532/0x560 [rdma_ucm]
kernel: kasan_report+0xe/0x20
kernel: check_memory_region+0x130/0x1a0
kernel: memcpy+0x20/0x50
kernel: ucma_event_handler+0x532/0x560 [rdma_ucm]
kernel: ? __rpc_execute+0x608/0x620 [sunrpc]
kernel: cma_iw_handler+0x212/0x330 [rdma_cm]
kernel: ? iw_conn_req_handler+0x6e0/0x6e0 [rdma_cm]
kernel: ? enqueue_timer+0x86/0x140
kernel: ? _raw_write_lock_irq+0xd0/0xd0
kernel: cm_work_handler+0xd3d/0x1070 [iw_cm]
Fixes:
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| 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.