{"cve":"CVE-2022-50295","nvd":{"published":"2025-09-15T15:15:40.880","modified":"2026-06-17T05:23:10.470","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/msg_ring: Fix NULL pointer dereference in io_msg_send_fd()\n\nSyzkaller produced the below call trace:\n\n BUG: KASAN: null-ptr-deref in io_msg_ring+0x3cb/0x9f0\n Write of size 8 at addr 0000000000000070 by task repro/16399\n\n CPU: 0 PID: 16399 Comm: repro Not tainted 6.1.0-rc1 #28\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.0-2.el7\n Call Trace:\n  <TASK>\n  dump_stack_lvl+0xcd/0x134\n  ? io_msg_ring+0x3cb/0x9f0\n  kasan_report+0xbc/0xf0\n  ? io_msg_ring+0x3cb/0x9f0\n  kasan_check_range+0x140/0x190\n  io_msg_ring+0x3cb/0x9f0\n  ? io_msg_ring_prep+0x300/0x300\n  io_issue_sqe+0x698/0xca0\n  io_submit_sqes+0x92f/0x1c30\n  __do_sys_io_uring_enter+0xae4/0x24b0\n....\n RIP: 0033:0x7f2eaf8f8289\n RSP: 002b:00007fff40939718 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa\n RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2eaf8f8289\n RDX: 0000000000000000 RSI: 0000000000006f71 RDI: 0000000000000004\n RBP: 00007fff409397a0 R08: 0000000000000000 R09: 0000000000000039\n R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004006d0\n R13: 00007fff40939880 R14: 0000000000000000 R15: 0000000000000000\n  </TASK>\n Kernel panic - not syncing: panic_on_warn set ...\n\nWe don't have a NULL check on file_ptr in io_msg_send_fd() function,\nso when file_ptr is NUL src_file is also NULL and get_file()\ndereferences a NULL pointer and leads to above crash.\n\nAdd a NULL check to fix this issue.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-476"],"references":["https://git.kernel.org/stable/c/0163e04ea64cc3dfaa12390286e5f2f481c3b2e3","https://git.kernel.org/stable/c/16bbdfe5fb0e78e0acb13e45fc127e9a296913f2"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:08:41.295252406+00:00"},"epss":{"cve":"CVE-2022-50295","score":0.0014,"percentile":0.03315,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}