CVE-2024-49898

一、漏洞信息
 漏洞编号：[CVE-2024-49898](https://nvd.nist.gov/vuln/detail/CVE-2024-49898)
 漏洞归属组件：[kernel](https://gitee.com/src-openeuler/kernel)
 漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.0,6.1.14,6.1.19,6.1.5,6.1.6,6.1.8,6.4.0,6.6.0
 CVSS V3.0分值：
  BaseScore：5.5 Medium
  Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
 漏洞简述：
  In the Linux kernel, the following vulnerability has been resolved:drm/amd/display: Check null-initialized variables[WHAT & HOW]drr_timing and subvp_pipe are initialized to null and they are notalways assigned new values. It is necessary to check for null beforedereferencing.This fixes 2 FORWARD_NULL issues reported by Coverity.
 漏洞公开时间：2024-10-22 02:15:12
 漏洞创建时间：2024-10-22 02:59:35
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2024-49898
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/115b1a3b0944b4d8ef0b4b0c5a625bdd9474131f |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/367cd9ceba1933b63bc1d87d967baf6d9fd241d2 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/3fc70ae048fe0936761b73b50700a810ff61e853 |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-49898 | https://bugzilla.suse.com/show_bug.cgi?id=1232222 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2024-49898 | https://bugzilla.suse.com/show_bug.cgi?id=1232222 |
| suse_bugzilla | https://git.kernel.org/stable/c/115b1a3b0944b4d8ef0b4b0c5a625bdd9474131f | https://bugzilla.suse.com/show_bug.cgi?id=1232222 |
| suse_bugzilla | https://git.kernel.org/stable/c/367cd9ceba1933b63bc1d87d967baf6d9fd241d2 | https://bugzilla.suse.com/show_bug.cgi?id=1232222 |
| suse_bugzilla | https://git.kernel.org/stable/c/3fc70ae048fe0936761b73b50700a810ff61e853 | https://bugzilla.suse.com/show_bug.cgi?id=1232222 |
| suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-49898.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1232222 |
| suse_bugzilla | https://bugzilla.redhat.com/show_bug.cgi?id=2320437 | https://bugzilla.suse.com/show_bug.cgi?id=1232222 |
| redhat_bugzilla | https://lore.kernel.org/linux-cve-announce/2024102119-CVE-2024-49898-adff@gregkh/T | https://bugzilla.redhat.com/show_bug.cgi?id=2320437 |
| debian |  | https://security-tracker.debian.org/tracker/CVE-2024-49898 |
| amazon_linux_explore | https://access.redhat.com/security/cve/CVE-2024-49898 | https://explore.alas.aws.amazon.com/CVE-2024-49898.html |
| amazon_linux_explore | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-49898 | https://explore.alas.aws.amazon.com/CVE-2024-49898.html |

</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:
  openBrain开源漏洞感知系统
 漏洞补丁信息：
  <details>
<summary>详情(点击展开)</summary>

| 影响的包 | 修复版本 | 修复补丁 | 问题引入补丁 | 来源  |
| ------- | -------- | ------- | -------- | --------- |
|  |  | https://git.kernel.org/stable/c/115b1a3b0944b4d8ef0b4b0c5a625bdd9474131f |  | nvd |
|  |  | https://git.kernel.org/stable/c/367cd9ceba1933b63bc1d87d967baf6d9fd241d2 |  | nvd |
|  |  | https://git.kernel.org/stable/c/3fc70ae048fe0936761b73b50700a810ff61e853 |  | nvd |

</details>

二、漏洞分析结构反馈
 影响性分析说明：
  In the Linux kernel, the following vulnerability has been resolved:drm/amd/display: Check null-initialized variables[WHAT & HOW]drr_timing and subvp_pipe are initialized to null and they are notalways assigned new values. It is necessary to check for null beforedereferencing.This fixes 2 FORWARD_NULL issues reported by Coverity.
 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-24.03-LTS(6.6.0):受影响
2.openEuler-20.03-LTS-SP4(4.19.90):不受影响
3.openEuler-22.03-LTS-SP1(5.10.0):不受影响
4.openEuler-22.03-LTS-SP3(5.10.0):不受影响
5.openEuler-22.03-LTS-SP4(5.10.0):不受影响
6.master(6.6.0):不受影响
7.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-SP1(5.10.0):否
3.openEuler-22.03-LTS-SP3(5.10.0):否
4.master(6.6.0):否
5.openEuler-24.03-LTS(6.6.0):否
6.openEuler-24.03-LTS-Next(6.6.0):否
7.openEuler-22.03-LTS-SP4(5.10.0):否

原因说明：
  1.master(6.6.0):
2.openEuler-20.03-LTS-SP4(4.19.90):
3.openEuler-22.03-LTS-SP1(5.10.0):
4.openEuler-22.03-LTS-SP3(5.10.0):
5.openEuler-22.03-LTS-SP4(5.10.0):
6.openEuler-24.03-LTS(6.6.0):
7.openEuler-24.03-LTS-Next(6.6.0):

@yangyingliang ,@jiaoff ,@guohaocs2c ,@hanjun-guo ,@woqidaideshi ,@newbeats ,@zhangyi089 ,@colyli ,@thundertown ,@htforge ,@chiqijun ,@lengchao ,@zhujianwei001 ,@kylin-mayukun ,@wangxiongfeng ,@wkfxxx ,@SuperSix173 ,@jentlestea ,@oskernel0719 ,@gasonchen 
**issue处理注意事项:** 
**1. 当前issue受影响的分支提交pr时, 须在pr描述中填写当前issue编号进行关联, 否则无法关闭当前issue;**
**2. 模板内容需要填写完整, 无论是受影响或者不受影响都需要填写完整内容,未引入的分支不需要填写, 否则无法关闭当前issue;**
**3. 以下为模板中需要填写完整的内容, 请复制到评论区回复, 注: 内容的标题名称(影响性分析说明, openEuler评分, 受影响版本排查(受影响/不受影响), 修复是否涉及abi变化(是/否))不能省略,省略后cve-manager将无法正常解析填写内容.**
************************************************************************
影响性分析说明:

openEuler评分: (评分和向量)

受影响版本排查(受影响/不受影响): 
1.master(6.6.0):
2.openEuler-20.03-LTS-SP4(4.19.90):
3.openEuler-22.03-LTS-SP1(5.10.0):
4.openEuler-22.03-LTS-SP3(5.10.0):
5.openEuler-22.03-LTS-SP4(5.10.0):
6.openEuler-24.03-LTS(6.6.0):
7.openEuler-24.03-LTS-Next(6.6.0):

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

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issue处理具体操作请参考: 
https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
pr关联issue具体操作请参考:
https://gitee.com/help/articles/4142

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