{
  "cveId": "CVE-2022-49456",
  "url": "https://patchblox.com/security/cve/CVE-2022-49456",
  "summary": "CVE-2022-49456 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49456, released February 26, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  bonding: fix missed rcu protection  When removin...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  bonding: fix missed rcu protection  When removing the rcu_read_lock in bond_ethtool_get_ts_info() as discussed [1], I didn\u0027t notice it could be called via setsockopt, which doesn\u0027t hold rcu lock, as syzbot pointed:    stack backtrace:   CPU: 0 PID: 3599 Comm: syz-executor317 Not tainted 5.18.0-rc5-syzkaller-01392-g01f4685797a5 #0   Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011   Call Trace:    \u003CTASK\u003E    __dump_stack lib/dump_stack.c:88 [inline]    dump_stack_lvl\u002B0xcd/0x134 lib/dump_stack.c:106    bond_option_active_slave_get_rcu include/net/bonding.h:353 [inline]    bond_ethtool_get_ts_info\u002B0x32c/0x3a0 drivers/net/bonding/bond_main.c:5595    __ethtool_get_ts_info\u002B0x173/0x240 net/ethtool/common.c:554    ethtool_get_phc_vclocks\u002B0x99/0x110 net/ethtool/common.c:568    sock_timestamping_bind_phc net/core/sock.c:869 [inline]    sock_set_timestamping\u002B0x3a3/0x7e0 net/core/sock.c:916    sock_setsockopt\u002B0x543/0x2ec0 net/core/sock.c:1221    __sys_setsockopt\u002B0x55e/0x6a0 net/socket.c:2223    __do_sys_setsockopt net/socket.c:2238 [inline]    __se_sys_setsockopt net/socket.c:2235 [inline]    __x64_sys_setsockopt\u002B0xba/0x150 net/socket.c:2235    do_syscall_x64 arch/x86/entry/common.c:50 [inline]    do_syscall_64\u002B0x35/0xb0 arch/x86/entry/common.c:80    entry_SYSCALL_64_after_hwframe\u002B0x44/0xae   RIP: 0033:0x7f8902c8eb39  Fix it by adding rcu_read_lock and take a ref on the real_dev. Since dev_hold() and dev_put() can take NULL these days, we can skip checking if real_dev exist.  [1] https://lore.kernel.org/netdev/27565.1642742439@famine/",
  "published": "2025-02-26T07:01:21Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00272,
  "epssPercentile": 0.19719,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.18.5-1",
      "fix": "DEBIAN-CVE-2022-49456",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49456",
      "released": "2025-02-26T07:01:21Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.18.5-1",
      "fix": "DEBIAN-CVE-2022-49456",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49456",
      "released": "2025-02-26T07:01:21Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.18.5-1",
      "fix": "DEBIAN-CVE-2022-49456",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49456",
      "released": "2025-02-26T07:01:21Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}