{
  "threat_severity" : "Moderate",
  "public_date" : "2025-09-15T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: io_uring/msg_ring: Fix NULL pointer dereference in io_msg_send_fd()",
    "id" : "2395299",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2395299"
  },
  "cvss3" : {
    "cvss3_base_score" : "5.5",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-476",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nio_uring/msg_ring: Fix NULL pointer dereference in io_msg_send_fd()\nSyzkaller produced the below call trace:\nBUG: KASAN: null-ptr-deref in io_msg_ring+0x3cb/0x9f0\nWrite of size 8 at addr 0000000000000070 by task repro/16399\nCPU: 0 PID: 16399 Comm: repro Not tainted 6.1.0-rc1 #28\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.0-2.el7\nCall Trace:\n<TASK>\ndump_stack_lvl+0xcd/0x134\n? io_msg_ring+0x3cb/0x9f0\nkasan_report+0xbc/0xf0\n? io_msg_ring+0x3cb/0x9f0\nkasan_check_range+0x140/0x190\nio_msg_ring+0x3cb/0x9f0\n? io_msg_ring_prep+0x300/0x300\nio_issue_sqe+0x698/0xca0\nio_submit_sqes+0x92f/0x1c30\n__do_sys_io_uring_enter+0xae4/0x24b0\n....\nRIP: 0033:0x7f2eaf8f8289\nRSP: 002b:00007fff40939718 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa\nRAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2eaf8f8289\nRDX: 0000000000000000 RSI: 0000000000006f71 RDI: 0000000000000004\nRBP: 00007fff409397a0 R08: 0000000000000000 R09: 0000000000000039\nR10: 0000000000000000 R11: 0000000000000246 R12: 00000000004006d0\nR13: 00007fff40939880 R14: 0000000000000000 R15: 0000000000000000\n</TASK>\nKernel panic - not syncing: panic_on_warn set ...\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.\nAdd a NULL check to fix this issue." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2023-11-07T00:00:00Z",
    "advisory" : "RHSA-2023:6583",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-362.8.1.el9_3"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2023-11-07T00:00:00Z",
    "advisory" : "RHSA-2023:6583",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-362.8.1.el9_3"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2022-50295\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-50295\nhttps://lore.kernel.org/linux-cve-announce/2025091557-CVE-2022-50295-8141@gregkh/T" ],
  "name" : "CVE-2022-50295",
  "csaw" : false
}