• CVE-2024-39490

发布时间: 2024年8月30日

修改时间: 2024年8月30日

概要

In the Linux kernel, the following vulnerability has been resolved: ipv6: sr: fix missing sk_buff release in seg6_input_core The seg6_input() function is responsible for adding the SRH into a packet, delegating the operation to the seg6_input_core(). This function uses the skb_cow_head() to ensure that there is sufficient headroom in the sk_buff for accommodating the link-layer header. In the event that the skb_cow_header() function fails, the seg6_input_core() catches the error but it does not release the sk_buff, which will result in a memory leak. This issue was introduced in commit af3b5158b89d ("ipv6: sr: fix BUG due to headroom too small after SRH push") and persists even after commit 7a3f5b0de364 ("netfilter: add netfilter hooks to SRv6 data plane"), where the entire seg6_input() code was refactored to deal with netfilter hooks. The proposed patch addresses the identified memory leak by requiring the seg6_input_core() function to release the sk_buff in the event that skb_cow_head() fails.

CVSS v3 指标

NVD openEuler
Confidentiality Low
Attack Vector Local
CVSS评分 N/A 3.9
Attack Complexity High
Privileges Required High
Scope Unchanged
Integrity Low
User Interaction None
Availability Low

安全公告

公告名 概要 发布时间
KylinSec-SA-2024-4977 kernel security update 2025年2月28日

影响产品

产品 状态
KY3.5.2 kernel Fixed
V6 kernel Fixed
KY3.5.3 kernel Fixed