一、漏洞信息
漏洞编号：CVE-2024-35879
漏洞归属组件：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 V2.0分值：
BaseScore：0.0 None
Vector：CVSS：2.0/
漏洞简述：
In the Linux kernel, the following vulnerability has been resolved:of: dynamic: Synchronize of_changeset_destroy() with the devlink removalsIn the following sequence: 1) of_platform_depopulate() 2) of_overlay_remove()During the step 1, devices are destroyed and devlinks are removed.During the step 2, OF nodes are destroyed but__of_changeset_entry_destroy() can raise warnings related to missingof_node_put(): ERROR: memory leak, expected refcount 1 instead of 2 ...Indeed, during the devlink removals performed at step 1, the removalitself releasing the device (and the attached of_node) is done by a jobqueued in a workqueue and so, it is done asynchronously with respect tofunction calls.When the warning is present, of_node_put() will be called but wronglytoo late from the workqueue job.In order to be sure that any ongoing devlink removals are done beforethe of_node destruction, synchronize the of_changeset_destroy() with thedevlink removals.
漏洞公开时间：2024-05-19 17:15:09
漏洞创建时间：2024-05-19 17:31:09
漏洞详情参考链接：
https://nvd.nist.gov/vuln/detail/CVE-2024-35879

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：

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:of: dynamic: Synchronize of_changeset_destroy() with the devlink removalsIn the following sequence: 1) of_platform_depopulate() 2) of_overlay_remove()During the step 1, devices are destroyed and devlinks are removed.During the step 2, OF nodes are destroyed but__of_changeset_entry_destroy() can raise warnings related to missingof_node_put(): ERROR: memory leak, expected refcount 1 instead of 2 ...Indeed, during the devlink removals performed at step 1, the removalitself releasing the device (and the attached of_node) is done by a jobqueued in a workqueue and so, it is done asynchronously with respect tofunction calls.When the warning is present, of_node_put() will be called but wronglytoo late from the workqueue job.In order to be sure that any ongoing devlink removals are done beforethe of_node destruction, synchronize the of_changeset_destroy() with thedevlink removals.
openEuler评分：
5.5
Vector：CVSS：2.0/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-SP1(5.10.0):受影响
2.openEuler-22.03-LTS-SP3(5.10.0):受影响
3.openEuler-24.03-LTS(6.6.0):不受影响
4.openEuler-20.03-LTS-SP4(4.19.90):不受影响
5.openEuler-22.03-LTS-SP4(5.10.0):不受影响
6.master(6.1.0):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(6.1.0):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

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2024-1839