🛡️ CVE-2024-57841 — kernel

🟡 CVSS 5.5 — Medium ✅ No Known Exploit NVD
5.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

net: fix memory leak in tcp_conn_request()

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().

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Affected software

CVE-2024-57841 is recorded against 2 packages.

  • kernel (from 6.7.0 up to 6.12.9)
  • linux-kernel

Timeline and source

Published on 15 January 2025 and last revised on 15 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
lists.debian.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

CVE-2024-57841 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Medium
CVSS Score 5.5
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2025-01-15
Updated 2026-08-12
Modified 2026-07-15

Affected Packages

Software From version Fixed in
kernel 6.7.0 6.12.9
linux-kernel — —

Similar Threats

Vulnerability Monitoring

Track new vulnerabilities in kernel

CVE-2024-57841 is rated CVSS 5.5 Medium. BotEraser monitors your WordPress installation and notifies you when software you use appears in our vulnerability database.

Set Up Free Alerts →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

Browse related advisories

All advisoriesCVECVE 2024