{
  "cveId": "CVE-2021-47395",
  "url": "https://patchblox.com/security/cve/CVE-2021-47395",
  "summary": "CVE-2021-47395 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47395, released May 21, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  mac80211: limit injected vht mcs/nss in ieee8021...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  mac80211: limit injected vht mcs/nss in ieee80211_parse_tx_radiotap  Limit max values for vht mcs and nss in ieee80211_parse_tx_radiotap routine in order to fix the following warning reported by syzbot:  WARNING: CPU: 0 PID: 10717 at include/net/mac80211.h:989 ieee80211_rate_set_vht include/net/mac80211.h:989 [inline] WARNING: CPU: 0 PID: 10717 at include/net/mac80211.h:989 ieee80211_parse_tx_radiotap\u002B0x101e/0x12d0 net/mac80211/tx.c:2244 Modules linked in: CPU: 0 PID: 10717 Comm: syz-executor.5 Not tainted 5.14.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ieee80211_rate_set_vht include/net/mac80211.h:989 [inline] RIP: 0010:ieee80211_parse_tx_radiotap\u002B0x101e/0x12d0 net/mac80211/tx.c:2244 RSP: 0018:ffffc9000186f3e8 EFLAGS: 00010216 RAX: 0000000000000618 RBX: ffff88804ef76500 RCX: ffffc900143a5000 RDX: 0000000000040000 RSI: ffffffff888f478e RDI: 0000000000000003 RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000100 R10: ffffffff888f46f9 R11: 0000000000000000 R12: 00000000fffffff8 R13: ffff88804ef7653c R14: 0000000000000001 R15: 0000000000000004 FS:  00007fbf5718f700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2de23000 CR3: 000000006a671000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace:  ieee80211_monitor_select_queue\u002B0xa6/0x250 net/mac80211/iface.c:740  netdev_core_pick_tx\u002B0x169/0x2e0 net/core/dev.c:4089  __dev_queue_xmit\u002B0x6f9/0x3710 net/core/dev.c:4165  __bpf_tx_skb net/core/filter.c:2114 [inline]  __bpf_redirect_no_mac net/core/filter.c:2139 [inline]  __bpf_redirect\u002B0x5ba/0xd20 net/core/filter.c:2162  ____bpf_clone_redirect net/core/filter.c:2429 [inline]  bpf_clone_redirect\u002B0x2ae/0x420 net/core/filter.c:2401  bpf_prog_eeb6f53a69e5c6a2\u002B0x59/0x234  bpf_dispatcher_nop_func include/linux/bpf.h:717 [inline]  __bpf_prog_run include/linux/filter.h:624 [inline]  bpf_prog_run include/linux/filter.h:631 [inline]  bpf_test_run\u002B0x381/0xa30 net/bpf/test_run.c:119  bpf_prog_test_run_skb\u002B0xb84/0x1ee0 net/bpf/test_run.c:663  bpf_prog_test_run kernel/bpf/syscall.c:3307 [inline]  __sys_bpf\u002B0x2137/0x5df0 kernel/bpf/syscall.c:4605  __do_sys_bpf kernel/bpf/syscall.c:4691 [inline]  __se_sys_bpf kernel/bpf/syscall.c:4689 [inline]  __x64_sys_bpf\u002B0x75/0xb0 kernel/bpf/syscall.c:4689  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: 0033:0x4665f9",
  "published": "2024-05-21T15:15:24Z",
  "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": 0.0024,
  "epssPercentile": 0.15153,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.14.12-1",
      "fix": "DEBIAN-CVE-2021-47395",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47395",
      "released": "2024-05-21T15:15:24Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.14.12-1",
      "fix": "DEBIAN-CVE-2021-47395",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47395",
      "released": "2024-05-21T15:15:24Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.14.12-1",
      "fix": "DEBIAN-CVE-2021-47395",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47395",
      "released": "2024-05-21T15:15:24Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}