{
  "schema_version": "1.4.0",
  "id": "GHSA-2cf6-4ffg-wwcf",
  "modified": "2025-09-25T18:30:28Z",
  "published": "2024-05-21T15:31:44Z",
  "aliases": [
    "CVE-2021-47395"
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmac80211: limit injected vht mcs/nss in ieee80211_parse_tx_radiotap\n\nLimit max values for vht mcs and nss in ieee80211_parse_tx_radiotap\nroutine in order to fix the following warning reported by syzbot:\n\nWARNING: CPU: 0 PID: 10717 at include/net/mac80211.h:989 ieee80211_rate_set_vht include/net/mac80211.h:989 [inline]\nWARNING: CPU: 0 PID: 10717 at include/net/mac80211.h:989 ieee80211_parse_tx_radiotap+0x101e/0x12d0 net/mac80211/tx.c:2244\nModules linked in:\nCPU: 0 PID: 10717 Comm: syz-executor.5 Not tainted 5.14.0-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\nRIP: 0010:ieee80211_rate_set_vht include/net/mac80211.h:989 [inline]\nRIP: 0010:ieee80211_parse_tx_radiotap+0x101e/0x12d0 net/mac80211/tx.c:2244\nRSP: 0018:ffffc9000186f3e8 EFLAGS: 00010216\nRAX: 0000000000000618 RBX: ffff88804ef76500 RCX: ffffc900143a5000\nRDX: 0000000000040000 RSI: ffffffff888f478e RDI: 0000000000000003\nRBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000100\nR10: ffffffff888f46f9 R11: 0000000000000000 R12: 00000000fffffff8\nR13: ffff88804ef7653c R14: 0000000000000001 R15: 0000000000000004\nFS:  00007fbf5718f700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000001b2de23000 CR3: 000000006a671000 CR4: 00000000001506f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600\nCall Trace:\n ieee80211_monitor_select_queue+0xa6/0x250 net/mac80211/iface.c:740\n netdev_core_pick_tx+0x169/0x2e0 net/core/dev.c:4089\n __dev_queue_xmit+0x6f9/0x3710 net/core/dev.c:4165\n __bpf_tx_skb net/core/filter.c:2114 [inline]\n __bpf_redirect_no_mac net/core/filter.c:2139 [inline]\n __bpf_redirect+0x5ba/0xd20 net/core/filter.c:2162\n ____bpf_clone_redirect net/core/filter.c:2429 [inline]\n bpf_clone_redirect+0x2ae/0x420 net/core/filter.c:2401\n bpf_prog_eeb6f53a69e5c6a2+0x59/0x234\n bpf_dispatcher_nop_func include/linux/bpf.h:717 [inline]\n __bpf_prog_run include/linux/filter.h:624 [inline]\n bpf_prog_run include/linux/filter.h:631 [inline]\n bpf_test_run+0x381/0xa30 net/bpf/test_run.c:119\n bpf_prog_test_run_skb+0xb84/0x1ee0 net/bpf/test_run.c:663\n bpf_prog_test_run kernel/bpf/syscall.c:3307 [inline]\n __sys_bpf+0x2137/0x5df0 kernel/bpf/syscall.c:4605\n __do_sys_bpf kernel/bpf/syscall.c:4691 [inline]\n __se_sys_bpf kernel/bpf/syscall.c:4689 [inline]\n __x64_sys_bpf+0x75/0xb0 kernel/bpf/syscall.c:4689\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\nRIP: 0033:0x4665f9",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
    }
  ],
  "affected": [],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47395"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1282bb00835ff79d2d9c023055d514df5b4de260"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/13cb6d826e0ac0d144b0d48191ff1a111d32f0c6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/76538c7b4df314bb937e44c5cb1782f37d47443c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/997ee230e4f5285cd98445c102d9033c7ec4814b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ab85997465b972d39d9747fc16311fa5773374b2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ce5f372f5f084ff51c285fc27b232f15a3d00f0b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e5bb852aa2ad963074f0ad73030dbc20a30853e3"
    }
  ],
  "database_specific": {
    "cwe_ids": [],
    "severity": "MODERATE",
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-21T15:15:24Z"
  }
}