CVE-2022-49390

一、漏洞信息
 漏洞编号：[CVE-2022-49390](https://nvd.nist.gov/vuln/detail/CVE-2022-49390)
 漏洞归属组件：[kernel](https://gitee.com/src-openeuler/kernel)
 漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.19,6.1.8,6.4.0,6.6.0
 CVSS V3.0分值：
  BaseScore：7.8 High
  Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
 漏洞简述：
  In the Linux kernel, the following vulnerability has been resolved:macsec: fix UAF bug for real_devCreate a new macsec device but not get reference to real_dev. That cannot ensure that real_dev is freed after macsec. That will trigger theUAF bug for real_dev as following:==================================================================BUG: KASAN: use-after-free in macsec_get_iflink+0x5f/0x70 drivers/net/macsec.c:3662Call Trace: ... macsec_get_iflink+0x5f/0x70 drivers/net/macsec.c:3662 dev_get_iflink+0x73/0xe0 net/core/dev.c:637 default_operstate net/core/link_watch.c:42 [inline] rfc2863_policy+0x233/0x2d0 net/core/link_watch.c:54 linkwatch_do_dev+0x2a/0x150 net/core/link_watch.c:161Allocated by task 22209: ... alloc_netdev_mqs+0x98/0x1100 net/core/dev.c:10549 rtnl_create_link+0x9d7/0xc00 net/core/rtnetlink.c:3235 veth_newlink+0x20e/0xa90 drivers/net/veth.c:1748Freed by task 8: ... kfree+0xd6/0x4d0 mm/slub.c:4552 kvfree+0x42/0x50 mm/util.c:615 device_release+0x9f/0x240 drivers/base/core.c:2229 kobject_cleanup lib/kobject.c:673 [inline] kobject_release lib/kobject.c:704 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1c8/0x540 lib/kobject.c:721 netdev_run_todo+0x72e/0x10b0 net/core/dev.c:10327After commit faab39f63c1f ( net: allow out-of-order netdev unregistration )and commit e5f80fcf869a ( ipv6: give an IPv6 dev to blackhole_netdev ), wecan add dev_hold_track() in macsec_dev_init() and dev_put_track() inmacsec_free_netdev() to fix the problem.
 漏洞公开时间：2025-02-26 15:01:15
 漏洞创建时间：2025-02-26 15:27:23
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2022-49390
<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/196a888ca6571deb344468e1d7138e3273206335 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/78933cbc143b82d02330e00900d2fd08f2682f4e |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/d130282179aa6051449ac8f8df1115769998a665 |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-49390 | https://bugzilla.suse.com/show_bug.cgi?id=1238233 |
| suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2022/CVE-2022-49390.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1238233 |
| suse_bugzilla | https://git.kernel.org/stable/c/78933cbc143b82d02330e00900d2fd08f2682f4e | https://bugzilla.suse.com/show_bug.cgi?id=1238233 |
| suse_bugzilla | https://git.kernel.org/stable/c/d130282179aa6051449ac8f8df1115769998a665 | https://bugzilla.suse.com/show_bug.cgi?id=1238233 |
| suse_bugzilla | https://git.kernel.org/stable/c/196a888ca6571deb344468e1d7138e3273206335 | https://bugzilla.suse.com/show_bug.cgi?id=1238233 |
| suse_bugzilla | https://bugzilla.redhat.com/show_bug.cgi?id=2348056 | https://bugzilla.suse.com/show_bug.cgi?id=1238233 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2022-49390 | https://bugzilla.suse.com/show_bug.cgi?id=1238233 |
| suse_bugzilla | https://github.com/CVEProject/cvelistV5/blob/main//cves/2022/49xxx/CVE-2022-49390.json | https://bugzilla.suse.com/show_bug.cgi?id=1238233 |

</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/196a888ca6571deb344468e1d7138e3273206335 |  | nvd |
|  |  | https://git.kernel.org/stable/c/78933cbc143b82d02330e00900d2fd08f2682f4e |  | nvd |
|  |  | https://git.kernel.org/stable/c/d130282179aa6051449ac8f8df1115769998a665 |  | 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:macsec: fix UAF bug for real_devCreate a new macsec device but not get reference to real_dev. That cannot ensure that real_dev is freed after macsec. That will trigger theUAF bug for real_dev as following:==================================================================BUG: KASAN: use-after-free in macsec_get_iflink+0x5f/0x70 drivers/net/macsec.c:3662Call Trace: ... macsec_get_iflink+0x5f/0x70 drivers/net/macsec.c:3662 dev_get_iflink+0x73/0xe0 net/core/dev.c:637 default_operstate net/core/link_watch.c:42 [inline] rfc2863_policy+0x233/0x2d0 net/core/link_watch.c:54 linkwatch_do_dev+0x2a/0x150 net/core/link_watch.c:161Allocated by task 22209: ... alloc_netdev_mqs+0x98/0x1100 net/core/dev.c:10549 rtnl_create_link+0x9d7/0xc00 net/core/rtnetlink.c:3235 veth_newlink+0x20e/0xa90 drivers/net/veth.c:1748Freed by task 8: ... kfree+0xd6/0x4d0 mm/slub.c:4552 kvfree+0x42/0x50 mm/util.c:615 device_release+0x9f/0x240 drivers/base/core.c:2229 kobject_cleanup lib/kobject.c:673 [inline] kobject_release lib/kobject.c:704 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1c8/0x540 lib/kobject.c:721 netdev_run_todo+0x72e/0x10b0 net/core/dev.c:10327After commit faab39f63c1f ( net: allow out-of-order netdev unregistration )and commit e5f80fcf869a ( ipv6: give an IPv6 dev to blackhole_netdev ), wecan add dev_hold_track() in macsec_dev_init() and dev_put_track() inmacsec_free_netdev() to fix the problem.
 openEuler评分：
  7.8
 Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
 受影响版本排查(受影响/不受影响)：
  1.openEuler-20.03-LTS-SP4(4.19.90):受影响
2.openEuler-22.03-LTS-SP3:受影响
3.openEuler-22.03-LTS-SP4:受影响
4.master(6.12.33):不受影响
5.openEuler-24.03-LTS:不受影响
6.openEuler-24.03-LTS-Next:不受影响
7.openEuler-24.03-LTS-SP1(6.6.0):不受影响
8.openEuler-24.03-LTS-SP2(6.6.0):不受影响

修复是否涉及abi变化(是/否)：
  1.master(6.12.33):否
2.openEuler-20.03-LTS-SP4(4.19.90):否
3.openEuler-22.03-LTS-SP3:否
4.openEuler-22.03-LTS-SP4:否
5.openEuler-24.03-LTS:否
6.openEuler-24.03-LTS-Next: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-20.03-LTS-SP4(4.19.90):正常修复
2.openEuler-22.03-LTS-SP3:正常修复
3.openEuler-22.03-LTS-SP4:正常修复
4.master(6.12.33):不受影响-漏洞代码不能被攻击者触发
5.openEuler-24.03-LTS:不受影响-漏洞代码不能被攻击者触发
6.openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发
7.openEuler-24.03-LTS-SP1(6.6.0):不受影响-漏洞代码不能被攻击者触发
8.openEuler-24.03-LTS-SP2(6.6.0):不受影响-漏洞代码不能被攻击者触发

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2025-2082

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