CWE
611 401
Advisory Published
Updated

CVE-2024-57841: net: fix memory leak in tcp_conn_request()

First published: Wed Jan 15 2025(Updated: )

In the Linux kernel, the following vulnerability has been resolved: net: fix memory leak in tcp_conn_request() If inet_csk_reqsk_queue_hash_add() return false, tcp_conn_request() will return without free the dst memory, which allocated in af_ops->route_req. Here is the kmemleak stack: unreferenced object 0xffff8881198631c0 (size 240): comm "softirq", pid 0, jiffies 4299266571 (age 1802.392s) hex dump (first 32 bytes): 00 10 9b 03 81 88 ff ff 80 98 da bc ff ff ff ff ................ 81 55 18 bb ff ff ff ff 00 00 00 00 00 00 00 00 .U.............. backtrace: [<ffffffffb93e8d4c>] kmem_cache_alloc+0x60c/0xa80 [<ffffffffba11b4c5>] dst_alloc+0x55/0x250 [<ffffffffba227bf6>] rt_dst_alloc+0x46/0x1d0 [<ffffffffba23050a>] __mkroute_output+0x29a/0xa50 [<ffffffffba23456b>] ip_route_output_key_hash+0x10b/0x240 [<ffffffffba2346bd>] ip_route_output_flow+0x1d/0x90 [<ffffffffba254855>] inet_csk_route_req+0x2c5/0x500 [<ffffffffba26b331>] tcp_conn_request+0x691/0x12c0 [<ffffffffba27bd08>] tcp_rcv_state_process+0x3c8/0x11b0 [<ffffffffba2965c6>] tcp_v4_do_rcv+0x156/0x3b0 [<ffffffffba299c98>] tcp_v4_rcv+0x1cf8/0x1d80 [<ffffffffba239656>] ip_protocol_deliver_rcu+0xf6/0x360 [<ffffffffba2399a6>] ip_local_deliver_finish+0xe6/0x1e0 [<ffffffffba239b8e>] ip_local_deliver+0xee/0x360 [<ffffffffba239ead>] ip_rcv+0xad/0x2f0 [<ffffffffba110943>] __netif_receive_skb_one_core+0x123/0x140 Call dst_release() to free the dst memory when inet_csk_reqsk_queue_hash_add() return false in tcp_conn_request().

Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Affected SoftwareAffected VersionHow to fix
Linux Kernel
Linux Kernel>=5.15.162<5.15.176
Linux Kernel>=6.1.97<6.1.124
Linux Kernel>=6.6.37<6.6.70
Linux Kernel>=6.9.8<6.12.9
Linux Kernel=6.13-rc1
Linux Kernel=6.13-rc2
Linux Kernel=6.13-rc3
Linux Kernel=6.13-rc4
Linux Kernel=6.13-rc5
debian/linux
5.10.223-1
5.10.234-1
6.1.129-1
6.1.128-1
6.12.20-1
6.12.21-1
debian/linux-6.1
6.1.129-1~deb11u1

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Frequently Asked Questions

  • What is the severity of CVE-2024-57841?

    The severity of CVE-2024-57841 is typically assessed as moderate due to its potential for causing a memory leak in the Linux kernel.

  • How do I fix CVE-2024-57841?

    To fix CVE-2024-57841, it is recommended to apply the patches provided in the latest Linux kernel updates.

  • Which versions of the Linux kernel are affected by CVE-2024-57841?

    CVE-2024-57841 affects multiple versions of the Linux kernel, including versions between 5.15.162 to 5.15.176, 6.1.97 to 6.1.124, and several others.

  • What does CVE-2024-57841 impact?

    CVE-2024-57841 impacts the Linux kernel's networking subsystem, specifically related to TCP connection requests.

  • Is CVE-2024-57841 publicly known?

    Yes, CVE-2024-57841 is a publicly disclosed vulnerability tracked in the CVE database.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203