JianyuWang0623 opened a new pull request, #14076: URL: https://github.com/apache/nuttx/pull/14076
## Summary A use-after-free problem occurs when there are multiple remotes in the list `g_rpmsg` and the matching remote is not the last item in the list. ### Log ``` # Export the device "/dev/LOCAL_DEV" to remote "REMOTE_CPU" ap> testdev -d 2 -c "REMOTE_CPU" -l "/dev/LOCAL_DEV" [ap] kasan_report: kasan detected a read access error, address at 0x3c3d4740,size is 4, return address: 0x2c33620f [ap] kasan_show_memory: Shadow bytes around the buggy address: [ap] kasan_show_memory: 0x3c3d46f0: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc [ap] kasan_show_memory: 0x3c3d4700: aa aa aa aa cc cc cc cc cc cc cc cc cc cc cc cc [ap] kasan_show_memory: 0x3c3d4710: 40 47 3d 3c ed 61 33 2c 00 00 00 00 00 00 00 00 [ap] kasan_show_memory: 0x3c3d4720: 00 00 00 00 00 00 00 00 00 00 00 00 cc cc cc cc [ap] kasan_show_memory: 0x3c3d4730: 55 55 55 55 38 00 00 00 02 2c 00 00 cc cc cc cc [ap] kasan_show_memory: 0x3c3d4740:[00 00 00 00]66 e0 42 3c cc cc cc cc cc cc cc cc [ap] kasan_show_memory: 0x3c3d4750: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc [ap] kasan_show_memory: 0x3c3d4760: aa aa aa aa 38 00 00 00 01 2c 00 00 cc cc cc cc [ap] kasan_show_memory: 0x3c3d4770: 50 57 44 3d 2f 00 cc cc cc cc cc cc cc cc cc cc [ap] kasan_show_memory: 0x3c3d4780: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc [ap] dump_assert_info: Current Version: NuttX ****** ***** *** 12.3.0 **********-***** *** ** 2024 **:**:** arm [ap] dump_assert_info: Assertion failed panic: at file: kasan/hook.c:187 task: testdev process: testdev 0x2ca20495 $ addr2line -fe nuttx/nuttx 0x2c33620f rpmsgdev_server_created /workspace/nuttx/drivers/misc/rpmsgdev_server.c:529 # Line 529 => strcmp() ``` ## Impact misc/rpmsgdev ## Testing CI -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
