{"id":"CVE-2022-49801","summary":"tracing: Fix memory leak in tracing_read_pipe()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix memory leak in tracing_read_pipe()\n\nkmemleak reports this issue:\n\nunreferenced object 0xffff888105a18900 (size 128):\n  comm \"test_progs\", pid 18933, jiffies 4336275356 (age 22801.766s)\n  hex dump (first 32 bytes):\n    25 73 00 90 81 88 ff ff 26 05 00 00 42 01 58 04  %s......&...B.X.\n    03 00 00 00 02 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace:\n    [\u003c00000000560143a1\u003e] __kmalloc_node_track_caller+0x4a/0x140\n    [\u003c000000006af00822\u003e] krealloc+0x8d/0xf0\n    [\u003c00000000c309be6a\u003e] trace_iter_expand_format+0x99/0x150\n    [\u003c000000005a53bdb6\u003e] trace_check_vprintf+0x1e0/0x11d0\n    [\u003c0000000065629d9d\u003e] trace_event_printf+0xb6/0xf0\n    [\u003c000000009a690dc7\u003e] trace_raw_output_bpf_trace_printk+0x89/0xc0\n    [\u003c00000000d22db172\u003e] print_trace_line+0x73c/0x1480\n    [\u003c00000000cdba76ba\u003e] tracing_read_pipe+0x45c/0x9f0\n    [\u003c0000000015b58459\u003e] vfs_read+0x17b/0x7c0\n    [\u003c000000004aeee8ed\u003e] ksys_read+0xed/0x1c0\n    [\u003c0000000063d3d898\u003e] do_syscall_64+0x3b/0x90\n    [\u003c00000000a06dda7f\u003e] entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\niter-\u003efmt alloced in\n  tracing_read_pipe() -\u003e .. -\u003etrace_iter_expand_format(), but not\nfreed, to fix, add free in tracing_release_pipe()","modified":"2026-04-03T13:14:51.943772772Z","published":"2025-05-01T14:09:29.682Z","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-2022-49801.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2c21ee020ce43d744ecd7f3e9bddfcaafef270ce"},{"type":"WEB","url":"https://git.kernel.org/stable/c/649e72070cbbb8600eb823833e4748f5a0815116"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a7d3f8f33c113478737bc61bb32ec5f9a987da7d"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49801.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49801"},{"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":"efbbdaa22bb78761bff8dfdde027ad04bedd47ce"},{"fixed":"2c21ee020ce43d744ecd7f3e9bddfcaafef270ce"},{"fixed":"a7d3f8f33c113478737bc61bb32ec5f9a987da7d"},{"fixed":"649e72070cbbb8600eb823833e4748f5a0815116"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"840ce9cfc86f89c335625ec297acc0375f82e19b"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49801.json"}}],"schema_version":"1.7.5"}