CVE-2024-27013 tun: limit printing rate when illegal packet received by tun dev

2024-05-0105:29:42

Linux

www.cve.org

cve-2024-27013

tun dev

printing rate

illegal packets

linux kernel

vulnerability

6.4 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON

In the Linux kernel, the following vulnerability has been resolved:

tun: limit printing rate when illegal packet received by tun dev

vhost_worker will call tun call backs to receive packets. If too many
illegal packets arrives, tun_do_read will keep dumping packet contents.
When console is enabled, it will costs much more cpu time to dump
packet and soft lockup will be detected.

net_ratelimit mechanism can be used to limit the dumping rate.

PID: 33036 TASK: ffff949da6f20000 CPU: 23 COMMAND: “vhost-32980”
#0 [fffffe00003fce50] crash_nmi_callback at ffffffff89249253
#1 [fffffe00003fce58] nmi_handle at ffffffff89225fa3
#2 [fffffe00003fceb0] default_do_nmi at ffffffff8922642e
#3 [fffffe00003fced0] do_nmi at ffffffff8922660d
#4 [fffffe00003fcef0] end_repeat_nmi at ffffffff89c01663
[exception RIP: io_serial_in+20]
RIP: ffffffff89792594 RSP: ffffa655314979e8 RFLAGS: 00000002
RAX: ffffffff89792500 RBX: ffffffff8af428a0 RCX: 0000000000000000
RDX: 00000000000003fd RSI: 0000000000000005 RDI: ffffffff8af428a0
RBP: 0000000000002710 R8: 0000000000000004 R9: 000000000000000f
R10: 0000000000000000 R11: ffffffff8acbf64f R12: 0000000000000020
R13: ffffffff8acbf698 R14: 0000000000000058 R15: 0000000000000000
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
#5 [ffffa655314979e8] io_serial_in at ffffffff89792594
#6 [ffffa655314979e8] wait_for_xmitr at ffffffff89793470
#7 [ffffa65531497a08] serial8250_console_putchar at ffffffff897934f6
#8 [ffffa65531497a20] uart_console_write at ffffffff8978b605
#9 [ffffa65531497a48] serial8250_console_write at ffffffff89796558
#10 [ffffa65531497ac8] console_unlock at ffffffff89316124
#11 [ffffa65531497b10] vprintk_emit at ffffffff89317c07
#12 [ffffa65531497b68] printk at ffffffff89318306
#13 [ffffa65531497bc8] print_hex_dump at ffffffff89650765
#14 [ffffa65531497ca8] tun_do_read at ffffffffc0b06c27 [tun]
#15 [ffffa65531497d38] tun_recvmsg at ffffffffc0b06e34 [tun]
#16 [ffffa65531497d68] handle_rx at ffffffffc0c5d682 [vhost_net]
#17 [ffffa65531497ed0] vhost_worker at ffffffffc0c644dc [vhost]
#18 [ffffa65531497f10] kthread at ffffffff892d2e72
#19 [ffffa65531497f50] ret_from_fork at ffffffff89c0022f

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/tun.c"
    ],
    "versions": [
      {
        "version": "ef3db4a59542",
        "lessThan": "68459b8e3ee5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ef3db4a59542",
        "lessThan": "4b0dcae5c479",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ef3db4a59542",
        "lessThan": "14cdb43dbc82",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ef3db4a59542",
        "lessThan": "a50dbeca28ac",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ef3db4a59542",
        "lessThan": "62e27ef18eb4",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ef3db4a59542",
        "lessThan": "40f4ced305c6",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ef3db4a59542",
        "lessThan": "52854101180b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ef3db4a59542",
        "lessThan": "f8bbc07ac535",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/tun.c"
    ],
    "versions": [
      {
        "version": "2.6.35",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.35",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.313",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.275",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.216",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.157",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.88",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.29",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8.8",
        "lessThanOrEqual": "6.8.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.9",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]