{"id":"DEBIAN-CVE-2022-50295","details":"In the Linux kernel, the following vulnerability has been resolved:  io_uring/msg_ring: Fix NULL pointer dereference in io_msg_send_fd()  Syzkaller produced the below call trace:   BUG: KASAN: null-ptr-deref in io_msg_ring+0x3cb/0x9f0  Write of size 8 at addr 0000000000000070 by task repro/16399   CPU: 0 PID: 16399 Comm: repro Not tainted 6.1.0-rc1 #28  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.0-2.el7  Call Trace:   \u003cTASK\u003e   dump_stack_lvl+0xcd/0x134   ? io_msg_ring+0x3cb/0x9f0   kasan_report+0xbc/0xf0   ? io_msg_ring+0x3cb/0x9f0   kasan_check_range+0x140/0x190   io_msg_ring+0x3cb/0x9f0   ? io_msg_ring_prep+0x300/0x300   io_issue_sqe+0x698/0xca0   io_submit_sqes+0x92f/0x1c30   __do_sys_io_uring_enter+0xae4/0x24b0 ....  RIP: 0033:0x7f2eaf8f8289  RSP: 002b:00007fff40939718 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa  RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2eaf8f8289  RDX: 0000000000000000 RSI: 0000000000006f71 RDI: 0000000000000004  RBP: 00007fff409397a0 R08: 0000000000000000 R09: 0000000000000039  R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004006d0  R13: 00007fff40939880 R14: 0000000000000000 R15: 0000000000000000   \u003c/TASK\u003e  Kernel panic - not syncing: panic_on_warn set ...  We don't have a NULL check on file_ptr in io_msg_send_fd() function, so when file_ptr is NUL src_file is also NULL and get_file() dereferences a NULL pointer and leads to above crash.  Add a NULL check to fix this issue.","modified":"2026-09-01T20:04:58.105593083Z","published":"2025-09-15T15:15:40.880Z","upstream":["CVE-2022-50295"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2022-50295"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.6-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50295.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.6-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50295.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.6-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50295.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}