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

Medium severity · published May 1, 2024

CVE-2024-27013

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

5.5

CVSS

0.3%

EPSS

On KEV

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

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack vector

Local

Complexity

Low

Privileges

Low

User interaction

None

Confidentiality

None

Integrity

None

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)0.3% · higher than 20% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Kernel · Linux

2.6.35 before 4.19.313; 4.20 before 5.4.275; 5.5 before 5.10.216; 5.11 before 5.15.157; 5.16 before 6.1.88; 6.2 before 6.6.29; +5 more · source: NVD

Linux · Linux

ef3db4a5954281bc1ea49a4739c88eaea091dc71 before 68459b8e3ee554ce71878af9eb69659b9462c588; ef3db4a5954281bc1ea49a4739c88eaea091dc71 before 4b0dcae5c4797bf31c63011ed62917210d3fdac3; ef3db4a5954281bc1ea49a4739c88eaea091dc71 before 14cdb43dbc827e18ac7d5b30c5b4c676219f1421; ef3db4a5954281bc1ea49a4739c88eaea091dc71 before a50dbeca28acf7051dfa92786b85f704c75db6eb; ef3db4a5954281bc1ea49a4739c88eaea091dc71 before 62e27ef18eb4f0d33bbae8e9ef56b99696a74713; ef3db4a5954281bc1ea49a4739c88eaea091dc71 before 40f4ced305c6c47487d3cd8da54676e2acc1a6ad; +3 more · source: vendor

Fedora · Fedoraproject

38; 39; 40 · source: NVD

RUGGEDCOM RST2428P · Siemens

before V3.1 · source: CISA

SCALANCE XCM-/XRM-/XCH-/XRH-300 family · Siemens

before V3.1 · source: CISA

SIMATIC S7-1500 TM MFP - GNU/Linux subsystem · Siemens

before V1.1.1 · source: CISA

Affected product

Kernel

Linux

All Kernel CVEs