{"id":"CVE-2022-49800","summary":"tracing: Fix memory leak in test_gen_synth_cmd() and test_empty_synth_event()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix memory leak in test_gen_synth_cmd() and test_empty_synth_event()\n\ntest_gen_synth_cmd() only free buf in fail path, hence buf will leak\nwhen there is no failure. Add kfree(buf) to prevent the memleak. The\nsame reason and solution in test_empty_synth_event().\n\nunreferenced object 0xffff8881127de000 (size 2048):\n  comm \"modprobe\", pid 247, jiffies 4294972316 (age 78.756s)\n  hex dump (first 32 bytes):\n    20 67 65 6e 5f 73 79 6e 74 68 5f 74 65 73 74 20   gen_synth_test\n    20 70 69 64 5f 74 20 6e 65 78 74 5f 70 69 64 5f   pid_t next_pid_\n  backtrace:\n    [\u003c000000004254801a\u003e] kmalloc_trace+0x26/0x100\n    [\u003c0000000039eb1cf5\u003e] 0xffffffffa00083cd\n    [\u003c000000000e8c3bc8\u003e] 0xffffffffa00086ba\n    [\u003c00000000c293d1ea\u003e] do_one_initcall+0xdb/0x480\n    [\u003c00000000aa189e6d\u003e] do_init_module+0x1cf/0x680\n    [\u003c00000000d513222b\u003e] load_module+0x6a50/0x70a0\n    [\u003c000000001fd4d529\u003e] __do_sys_finit_module+0x12f/0x1c0\n    [\u003c00000000b36c4c0f\u003e] do_syscall_64+0x3f/0x90\n    [\u003c00000000bbf20cf3\u003e] entry_SYSCALL_64_after_hwframe+0x63/0xcd\nunreferenced object 0xffff8881127df000 (size 2048):\n  comm \"modprobe\", pid 247, jiffies 4294972324 (age 78.728s)\n  hex dump (first 32 bytes):\n    20 65 6d 70 74 79 5f 73 79 6e 74 68 5f 74 65 73   empty_synth_tes\n    74 20 20 70 69 64 5f 74 20 6e 65 78 74 5f 70 69  t  pid_t next_pi\n  backtrace:\n    [\u003c000000004254801a\u003e] kmalloc_trace+0x26/0x100\n    [\u003c00000000d4db9a3d\u003e] 0xffffffffa0008071\n    [\u003c00000000c31354a5\u003e] 0xffffffffa00086ce\n    [\u003c00000000c293d1ea\u003e] do_one_initcall+0xdb/0x480\n    [\u003c00000000aa189e6d\u003e] do_init_module+0x1cf/0x680\n    [\u003c00000000d513222b\u003e] load_module+0x6a50/0x70a0\n    [\u003c000000001fd4d529\u003e] __do_sys_finit_module+0x12f/0x1c0\n    [\u003c00000000b36c4c0f\u003e] do_syscall_64+0x3f/0x90\n    [\u003c00000000bbf20cf3\u003e] entry_SYSCALL_64_after_hwframe+0x63/0xcd","modified":"2026-04-03T13:14:48.879787859Z","published":"2025-05-01T14:09:29.042Z","related":["SUSE-SU-2025:01918-1","SUSE-SU-2025:01966-1","SUSE-SU-2025:02173-1","SUSE-SU-2025:02262-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49800.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/07ba4f0603aba288580866394f2916dfe55823a2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0e5baaa181a052d968701bb9c5b1d55847f00942"},{"type":"WEB","url":"https://git.kernel.org/stable/c/65ba7e7c241122ef0a9e61d1920f2ae9689aa796"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a4527fef9afe5c903c718d0cd24609fe9c754250"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49800.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49800"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"9fe41efaca08416657efa8731c0d47ccb6a3f3eb"},{"fixed":"65ba7e7c241122ef0a9e61d1920f2ae9689aa796"},{"fixed":"07ba4f0603aba288580866394f2916dfe55823a2"},{"fixed":"0e5baaa181a052d968701bb9c5b1d55847f00942"},{"fixed":"a4527fef9afe5c903c718d0cd24609fe9c754250"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49800.json"}}],"schema_version":"1.7.5"}