{"id":"CVE-2022-49800","url":"https://www.cyber-defence.io/tools/cve/CVE-2022-49800","generatedAt":"2026-10-27T17:45:28.641Z","title":"In the Linux kernel, the following vulnerability has been resolved: tracing: Fix memory leak in test_gen_synth_cmd() and test_empty_synth_event() test_gen_synth_cmd() only free buf in fail path, hence buf will leak when there is no failure.","description":"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    [<000000004254801a>] kmalloc_trace+0x26/0x100\n    [<0000000039eb1cf5>] 0xffffffffa00083cd\n    [<000000000e8c3bc8>] 0xffffffffa00086ba\n    [<00000000c293d1ea>] do_one_initcall+0xdb/0x480\n    [<00000000aa189e6d>] do_init_module+0x1cf/0x680\n    [<00000000d513222b>] load_module+0x6a50/0x70a0\n    [<000000001fd4d529>] __do_sys_finit_module+0x12f/0x1c0\n    [<00000000b36c4c0f>] do_syscall_64+0x3f/0x90\n    [<00000000bbf20cf3>] 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    [<000000004254801a>] kmalloc_trace+0x26/0x100\n    [<00000000d4db9a3d>] 0xffffffffa0008071\n    [<00000000c31354a5>] 0xffffffffa00086ce\n    [<00000000c293d1ea>] do_one_initcall+0xdb/0x480\n    [<00000000aa189e6d>] do_init_module+0x1cf/0x680\n    [<00000000d513222b>] load_module+0x6a50/0x70a0\n    [<000000001fd4d529>] __do_sys_finit_module+0x12f/0x1c0\n    [<00000000b36c4c0f>] do_syscall_64+0x3f/0x90\n    [<00000000bbf20cf3>] entry_SYSCALL_64_after_hwframe+0x63/0xcd","published":"2025-05-01T15:16:03.000Z","lastModified":"2026-06-17T05:19:11.000Z","status":"Analyzed","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":{"version":"3.1","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-401"],"affected":["linux/linux kernel"],"epss":{"score":0.00202,"percentile":0.0997,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.20%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/07ba4f0603aba288580866394f2916dfe55823a2","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/0e5baaa181a052d968701bb9c5b1d55847f00942","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/65ba7e7c241122ef0a9e61d1920f2ae9689aa796","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a4527fef9afe5c903c718d0cd24609fe9c754250","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-49800","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}