CVE-2024-58098

一、漏洞信息
 漏洞编号：[CVE-2024-58098](https://nvd.nist.gov/vuln/detail/CVE-2024-58098)
 漏洞归属组件：[kernel](https://gitee.com/src-openeuler/kernel)
 漏洞归属的版本：6.6.0
 CVSS V3.0分值：
  BaseScore：N/A None
  Vector：CVSS：3.0/
 漏洞简述：
  In the Linux kernel, the following vulnerability has been resolved:bpf: track changes_pkt_data property for global functionsWhen processing calls to certain helpers, verifier invalidates allpacket pointers in a current state. For example, consider thefollowing program:    __attribute__((__noinline__))    long skb_pull_data(struct __sk_buff *sk, __u32 len)    {        return bpf_skb_pull_data(sk, len);    }    SEC( tc )    int test_invalidate_checks(struct __sk_buff *sk)    {        int *p = (void *)(long)sk->data;        if ((void *)(p + 1) > (void *)(long)sk->data_end) return TCX_DROP;        skb_pull_data(sk, 0);        *p = 42;        return TCX_PASS;    }After a call to bpf_skb_pull_data() the pointer  p  can t be usedsafely. See function filter.c:bpf_helper_changes_pkt_data() for a listof such helpers.At the moment verifier invalidates packet pointers when processinghelper function calls, and does not traverse global sub-programs whenprocessing calls to global sub-programs. This means that calls tohelpers done from global sub-programs do not invalidate pointers inthe caller state. E.g. the program above is unsafe, but is notrejected by verifier.This commit fixes the omission by computing fieldbpf_subprog_info->changes_pkt_data for each sub-program before mainverification pass.changes_pkt_data should be set if:- subprogram calls helper for which bpf_helper_changes_pkt_data  returns true;- subprogram calls a global function,  for which bpf_subprog_info->changes_pkt_data should be set.The verifier.c:check_cfg() pass is modified to compute thisinformation. The commit relies on depth first instruction traversaldone by check_cfg() and absence of recursive function calls:- check_cfg() would eventually visit every call to subprogram S in a  state when S is fully explored;- when S is fully explored:  - every direct helper call within S is explored    (and thus changes_pkt_data is set if needed);  - every call to subprogram S1 called by S was visited with S1 fully    explored (and thus S inherits changes_pkt_data from S1).The downside of such approach is that dead code elimination is nottaken into account: if a helper call inside global function is deadbecause of current configuration, verifier would conservatively assumethat the call occurs for the purpose of the changes_pkt_datacomputation.
 漏洞公开时间：2025-05-05 23:15
 漏洞创建时间：2025-05-13 10:53:18
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2024-58098
<details>
<summary>更多参考(点击展开)</summary>

无
</details>

漏洞分析指导链接：
  https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
 漏洞数据来源:
  其它
 漏洞补丁信息：
  <details>
<summary>详情(点击展开)</summary>

无
</details>

二、漏洞分析结构反馈
 影响性分析说明：
  Reserved.
 openEuler评分：
  5.5
 Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
 受影响版本排查(受影响/不受影响)：
  1.openEuler-22.03-LTS-SP3(5.10.0):受影响
2.openEuler-22.03-LTS-SP4(5.10.0):受影响
3.openEuler-24.03-LTS(6.6.0):受影响
4.openEuler-24.03-LTS-SP1(6.6.0):受影响
5.openEuler-24.03-LTS-SP2(6.6.0):受影响
6.openEuler-20.03-LTS-SP4(4.19.90):不受影响
7.master(6.6.0):不受影响
8.openEuler-24.03-LTS-Next(6.6.0):不受影响

修复是否涉及abi变化(是/否)：
  1.openEuler-20.03-LTS-SP4(4.19.90):否
2.openEuler-22.03-LTS-SP3(5.10.0):否
3.master(6.6.0):否
4.openEuler-24.03-LTS(6.6.0):否
5.openEuler-24.03-LTS-Next(6.6.0):否
6.openEuler-22.03-LTS-SP4(5.10.0):否
7.openEuler-24.03-LTS-SP1(6.6.0):否
8.openEuler-24.03-LTS-SP2(6.6.0):否

原因说明：
  1.openEuler-24.03-LTS(6.6.0):正常修复
2.openEuler-24.03-LTS-SP1(6.6.0):正常修复
3.openEuler-24.03-LTS-SP2(6.6.0):正常修复
4.openEuler-22.03-LTS-SP3(5.10.0):不修复-超出修复范围
5.openEuler-22.03-LTS-SP4(5.10.0):不修复-超出修复范围
6.master(6.6.0):不受影响-漏洞代码不能被攻击者触发
7.openEuler-24.03-LTS-Next(6.6.0):不受影响-漏洞代码不能被攻击者触发
8.openEuler-20.03-LTS-SP4(4.19.90):不受影响-漏洞代码不存在

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2025-1540

src-openEuler/kernel

Content Risk Flag

Comments (22)

src-openEuler/kernel .gitee-modal { width: 500px !important; }

Content Risk Flag

CVE-2024-58098

Comments (22)

Search

src-openEuler/kernel