CVE-2024-57841

MEDIUM EPSS 12.1%
Published Jan 15, 20251y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
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Published Jan 15, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

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().

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
12.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-401

Affected Products 9

VendorProductVersionRange
linuxlinux_kernel*≥5.15.162  –  <5.15.176
linuxlinux_kernel*≥6.1.97  –  <6.1.124
linuxlinux_kernel*≥6.6.37  –  <6.6.70
linuxlinux_kernel*≥6.9.8  –  <6.12.9
linuxlinux_kernel6.13any
linuxlinux_kernel6.13any
linuxlinux_kernel6.13any
linuxlinux_kernel6.13any
linuxlinux_kernel6.13any

References 6

  • git.kernel.org https://git.kernel.org/stable/c/2af69905180b3fea12f9c1db374b153a06977021
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4f4aa4aa28142d53f8b06585c478476cfe325cfc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9d38959677291552d1b0ed2689a540af279b5bf8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b0b190218c78d8aeecfba36ea3a90063b3ede52d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/de3f999bf8aee16e9da1c1224191abdc69e97c9d
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/2af69905180b3fea12f9c1db374b153a06977021
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4f4aa4aa28142d53f8b06585c478476cfe325cfc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9d38959677291552d1b0ed2689a540af279b5bf8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b0b190218c78d8aeecfba36ea3a90063b3ede52d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/de3f999bf8aee16e9da1c1224191abdc69e97c9d
    Patch