CVE-2022-49799: In the Linux kernel, the following vulnerability has been resolved: tracing: Fix wild-memory-access in register_synth_event() In register_synth_event(), if…

PriorityP430high7.1CVSS 3.1

AVLACLPRLUINSUCHINAH

EPSS

0.19%

9.3th percentile

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix wild-memory-access in register_synth_event() In register_synth_event(), if set_synth_event_print_fmt() failed, then both trace_remove_event_call() and unregister_trace_event() will be called, which means the trace_event_call will call __unregister_trace_event() twice. As the result, the second unregister will causes the wild-memory-access. register_synth_event set_synth_event_print_fmt failed trace_remove_event_call event_remove if call->event.funcs then __unregister_trace_event (first call) unregister_trace_event __unregister_trace_event (second call) Fix the bug by avoiding to call the second __unregister_trace_event() by checking if the first one is called. general protection fault, probably for non-canonical address 0xfbd59c0000000024: 0000 [#1] SMP KASAN PTI KASAN: maybe wild-memory-access in range [0xdead000000000120-0xdead000000000127] CPU: 0 PID: 3807 Comm: modprobe Not tainted 6.1.0-rc1-00186-g76f33a7eedb4 #299 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.15.0-0-g2dd4b9b3f840-prebuilt.qemu.org 04/01/2014 RIP: 0010:unregister_trace_event+0x6e/0x280 Code: 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 0e 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 08 4c 89 e2 48 c1 ea 03 3c 02 00 0f 85 e2 01 00 00 49 89 2c 24 48 85 ed 74 28 e8 7a 9b RSP: 0018:ffff88810413f370 EFLAGS: 00010a06 RAX: dffffc0000000000 RBX: ffff888105d050b0 RCX: 0000000000000000 RDX: 1bd5a00000000024 RSI: ffff888119e276e0 RDI: ffffffff835a8b20 RBP: dead000000000100 R08: 0000000000000000 R09: fffffbfff0913481 R10: ffffffff8489a407 R11: fffffbfff0913480 R12: dead000000000122 R13: ffff888105d050b8 R14: 0000000000000000 R15: ffff888105d05028 FS: 00007f7823e8d540(0000) GS:ffff888119e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7823e7ebec CR3: 000000010a058002 CR4: 0000000000330ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 00000000000

Affected

14 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 6.0.10-1 (bookworm)	linux 6.0.10-1 (bookworm)
linux	linux	—	—
linux	linux	>= 4b147936fa509650beaf638b331573c23ba4d609 < 315b149f08229a233d47532eb5da1707b28f764c	315b149f08229a233d47532eb5da1707b28f764c
linux	linux	>= 4b147936fa509650beaf638b331573c23ba4d609 < 6517b97134f724d12f673f9fb4f456d75c7a905f	6517b97134f724d12f673f9fb4f456d75c7a905f
linux	linux	>= 4b147936fa509650beaf638b331573c23ba4d609 < a5bfa53e5036b3e7a80be902dd3719a930accabd	a5bfa53e5036b3e7a80be902dd3719a930accabd
linux	linux	>= 4b147936fa509650beaf638b331573c23ba4d609 < 1b5f1c34d3f5a664a57a5a7557a50e4e3cc2505c	1b5f1c34d3f5a664a57a5a7557a50e4e3cc2505c
linux	linux_kernel	—	—
linux	linux_kernel	>= 0 < 5.10.158-1	5.10.158-1
linux	linux_kernel	>= 0 < 6.0.10-1	6.0.10-1
linux	linux_kernel	>= 0 < 6.0.10-1	6.0.10-1
linux	linux_kernel	>= 0 < 6.0.10-1	6.0.10-1
linux	linux_kernel	>= 4.17 < 5.10.156	5.10.156
linux	linux_kernel	>= 5.11 < 5.15.80	5.15.80
linux	linux_kernel	>= 5.16 < 6.0.10	6.0.10

CVSS provenance

nvdv3.17.1HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

osv7.1HIGH

vendor_debian7.1HIGH

vendor_redhat7.1HIGH

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