{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"315b149f08229a233d47532eb5da1707b28f764c","status":"affected","version":"4b147936fa509650beaf638b331573c23ba4d609","versionType":"git"},{"lessThan":"6517b97134f724d12f673f9fb4f456d75c7a905f","status":"affected","version":"4b147936fa509650beaf638b331573c23ba4d609","versionType":"git"},{"lessThan":"a5bfa53e5036b3e7a80be902dd3719a930accabd","status":"affected","version":"4b147936fa509650beaf638b331573c23ba4d609","versionType":"git"},{"lessThan":"1b5f1c34d3f5a664a57a5a7557a50e4e3cc2505c","status":"affected","version":"4b147936fa509650beaf638b331573c23ba4d609","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"4.17"},{"lessThan":"4.17","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.156","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.80","versionType":"semver"},{"lessThanOrEqual":"6.0.*","status":"unaffected","version":"6.0.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.1","versionType":"original_commit_for_fix"}]}],"cveId":"CVE-2022-49799","cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix wild-memory-access in register_synth_event()\n\nIn register_synth_event(), if set_synth_event_print_fmt() failed, then\nboth trace_remove_event_call() and unregister_trace_event() will be\ncalled, which means the trace_event_call will call\n__unregister_trace_event() twice. As the result, the second unregister\nwill causes the wild-memory-access.\n\nregister_synth_event\n    set_synth_event_print_fmt failed\n    trace_remove_event_call\n        event_remove\n            if call->event.funcs then\n            __unregister_trace_event (first call)\n    unregister_trace_event\n        __unregister_trace_event (second call)\n\nFix the bug by avoiding to call the second __unregister_trace_event() by\nchecking if the first one is called.\n\ngeneral protection fault, probably for non-canonical address\n\t0xfbd59c0000000024: 0000 [#1] SMP KASAN PTI\nKASAN: maybe wild-memory-access in range\n[0xdead000000000120-0xdead000000000127]\nCPU: 0 PID: 3807 Comm: modprobe Not tainted\n6.1.0-rc1-00186-g76f33a7eedb4 #299\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\nrel-1.15.0-0-g2dd4b9b3f840-prebuilt.qemu.org 04/01/2014\nRIP: 0010:unregister_trace_event+0x6e/0x280\nCode: 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 0e 02 00 00 48\nb8 00 00 00 00 00 fc ff df 4c 8b 63 08 4c 89 e2 48 c1 ea 03 <80> 3c 02\n00 0f 85 e2 01 00 00 49 89 2c 24 48 85 ed 74 28 e8 7a 9b\nRSP: 0018:ffff88810413f370 EFLAGS: 00010a06\nRAX: dffffc0000000000 RBX: ffff888105d050b0 RCX: 0000000000000000\nRDX: 1bd5a00000000024 RSI: ffff888119e276e0 RDI: ffffffff835a8b20\nRBP: dead000000000100 R08: 0000000000000000 R09: fffffbfff0913481\nR10: ffffffff8489a407 R11: fffffbfff0913480 R12: dead000000000122\nR13: ffff888105d050b8 R14: 0000000000000000 R15: ffff888105d05028\nFS:  00007f7823e8d540(0000) GS:ffff888119e00000(0000)\nknlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f7823e7ebec CR3: 000000010a058002 CR4: 0000000000330ef0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n <TASK>\n __create_synth_event+0x1e37/0x1eb0\n create_or_delete_synth_event+0x110/0x250\n synth_event_run_command+0x2f/0x110\n test_gen_synth_cmd+0x170/0x2eb [synth_event_gen_test]\n synth_event_gen_test_init+0x76/0x9bc [synth_event_gen_test]\n do_one_initcall+0xdb/0x480\n do_init_module+0x1cf/0x680\n load_module+0x6a50/0x70a0\n __do_sys_finit_module+0x12f/0x1c0\n do_syscall_64+0x3f/0x90\n entry_SYSCALL_64_after_hwframe+0x63/0xcd","epss":{"date":"2026-11-05","percentile":0.10617,"score":0.00205},"exploits":[],"kev":null,"metrics":[],"modifiedAt":1793908189482,"publishedAt":1746108568377,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/315b149f08229a233d47532eb5da1707b28f764c"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/6517b97134f724d12f673f9fb4f456d75c7a905f"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/a5bfa53e5036b3e7a80be902dd3719a930accabd"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/1b5f1c34d3f5a664a57a5a7557a50e4e3cc2505c"}],"remediation":[],"revision":"ac3f6585810ee29175fe3faa0c14a35ff2418e56478e5bbc168e2107da34b83d","sources":[{"modifiedAt":1793908189482,"name":"CNA: Linux","retrievedAt":1793909429248,"url":"https://www.cve.org/CVERecord?id=CVE-2022-49799"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793909454758,"url":"https://api.first.org/data/v1/epss?cve=CVE-2022-49799"}],"ssvc":{"assessedAt":1793908117155,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"tracing: Fix wild-memory-access in register_synth_event()","updatedAt":1793909454758}