CVE-2023-52622

一、漏洞信息
 漏洞编号：[CVE-2023-52622](https://nvd.nist.gov/vuln/detail/CVE-2023-52622)
 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
 CVSS V2.0分值：
  BaseScore：0.0 Low
  Vector：CVSS：2.0/
 漏洞简述：
  In the Linux kernel, the following vulnerability has been resolved:ext4: avoid online resizing failures due to oversized flex bgWhen we online resize an ext4 filesystem with a oversized flexbg_size,     mkfs.ext4 -F -G 67108864 $dev -b 4096 100M     mount $dev $dir     resize2fs $dev 16Gthe following WARN_ON is triggered:==================================================================WARNING: CPU: 0 PID: 427 at mm/page_alloc.c:4402 __alloc_pages+0x411/0x550Modules linked in: sg(E)CPU: 0 PID: 427 Comm: resize2fs Tainted: G  E  6.6.0-rc5+ #314RIP: 0010:__alloc_pages+0x411/0x550Call Trace: <TASK> __kmalloc_large_node+0xa2/0x200 __kmalloc+0x16e/0x290 ext4_resize_fs+0x481/0xd80 __ext4_ioctl+0x1616/0x1d90 ext4_ioctl+0x12/0x20 __x64_sys_ioctl+0xf0/0x150 do_syscall_64+0x3b/0x90==================================================================This is because flexbg_size is too large and the size of the new_group_dataarray to be allocated exceeds MAX_ORDER. Currently, the minimum value ofMAX_ORDER is 8, the minimum value of PAGE_SIZE is 4096, the correspondingmaximum number of groups that can be allocated is: (PAGE_SIZE << MAX_ORDER) / sizeof(struct ext4_new_group_data) ≈ 21845And the value that is down-aligned to the power of 2 is 16384. Therefore,this value is defined as MAX_RESIZE_BG, and the number of groups addedeach time does not exceed this value during resizing, and is added multipletimes to complete the online resizing. The difference is that the metadatain a flex_bg may be more dispersed.
 漏洞公开时间：2024-03-27 02:15:08
 漏洞创建时间：2024-03-27 03:02:46
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2023-52622
<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/5d1935ac02ca5aee364a449a35e2977ea84509b0 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/6d2cbf517dcabc093159cf138ad5712c9c7fa954 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/8b1413dbfe49646eda2c00c0f1144ee9d3368e0c |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/b183fe8702e78bba3dcef8e7193cab6898abee07 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/cd1f93ca97a9136989f3bd2bf90696732a2ed644 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/cfbbb3199e71b63fc26cee0ebff327c47128a1e8 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/d76c8d7ffe163c6bf2f1ef680b0539c2b3902b90 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/dc3e0f55bec4410f3d74352c4a7c79f518088ee2 |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-52622 | https://bugzilla.suse.com/show_bug.cgi?id=1222080 |
| suse_bugzilla | https://git.kernel.org/stable/c/cfbbb3199e71b63fc26cee0ebff327c47128a1e8 | https://bugzilla.suse.com/show_bug.cgi?id=1222080 |
| suse_bugzilla | https://git.kernel.org/stable/c/d76c8d7ffe163c6bf2f1ef680b0539c2b3902b90 | https://bugzilla.suse.com/show_bug.cgi?id=1222080 |
| suse_bugzilla | https://git.kernel.org/stable/c/6d2cbf517dcabc093159cf138ad5712c9c7fa954 | https://bugzilla.suse.com/show_bug.cgi?id=1222080 |
| suse_bugzilla | https://git.kernel.org/stable/c/8b1413dbfe49646eda2c00c0f1144ee9d3368e0c | https://bugzilla.suse.com/show_bug.cgi?id=1222080 |
| suse_bugzilla | https://git.kernel.org/stable/c/dc3e0f55bec4410f3d74352c4a7c79f518088ee2 | https://bugzilla.suse.com/show_bug.cgi?id=1222080 |
| suse_bugzilla | https://git.kernel.org/stable/c/5d1935ac02ca5aee364a449a35e2977ea84509b0 | https://bugzilla.suse.com/show_bug.cgi?id=1222080 |
| suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2023/CVE-2023-52622.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1222080 |
| suse_bugzilla | https://git.kernel.org/stable/c/cd1f93ca97a9136989f3bd2bf90696732a2ed644 | https://bugzilla.suse.com/show_bug.cgi?id=1222080 |
| suse_bugzilla | https://git.kernel.org/stable/c/b183fe8702e78bba3dcef8e7193cab6898abee07 | https://bugzilla.suse.com/show_bug.cgi?id=1222080 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2023-52622 | https://bugzilla.suse.com/show_bug.cgi?id=1222080 |
| suse_bugzilla | https://bugzilla.redhat.com/show_bug.cgi?id=2271688 | https://bugzilla.suse.com/show_bug.cgi?id=1222080 |
| redhat_bugzilla | https://lore.kernel.org/linux-cve-announce/20240326171931.1354035-5-lee@kernel.org/T | https://bugzilla.redhat.com/show_bug.cgi?id=2271688 |
| ubuntu | https://git.kernel.org/linus/5d1935ac02ca5aee364a449a35e2977ea84509b0 (6.8-rc1) | https://ubuntu.com/security/CVE-2023-52622 |
| ubuntu | https://git.kernel.org/stable/c/cd1f93ca97a9136989f3bd2bf90696732a2ed644 | https://ubuntu.com/security/CVE-2023-52622 |
| ubuntu | https://git.kernel.org/stable/c/b183fe8702e78bba3dcef8e7193cab6898abee07 | https://ubuntu.com/security/CVE-2023-52622 |
| ubuntu | https://git.kernel.org/stable/c/cfbbb3199e71b63fc26cee0ebff327c47128a1e8 | https://ubuntu.com/security/CVE-2023-52622 |
| ubuntu | https://git.kernel.org/stable/c/d76c8d7ffe163c6bf2f1ef680b0539c2b3902b90 | https://ubuntu.com/security/CVE-2023-52622 |
| ubuntu | https://git.kernel.org/stable/c/6d2cbf517dcabc093159cf138ad5712c9c7fa954 | https://ubuntu.com/security/CVE-2023-52622 |
| ubuntu | https://git.kernel.org/stable/c/8b1413dbfe49646eda2c00c0f1144ee9d3368e0c | https://ubuntu.com/security/CVE-2023-52622 |
| ubuntu | https://git.kernel.org/stable/c/dc3e0f55bec4410f3d74352c4a7c79f518088ee2 | https://ubuntu.com/security/CVE-2023-52622 |
| ubuntu | https://git.kernel.org/stable/c/5d1935ac02ca5aee364a449a35e2977ea84509b0 | https://ubuntu.com/security/CVE-2023-52622 |
| ubuntu | https://www.cve.org/CVERecord?id=CVE-2023-52622 | https://ubuntu.com/security/CVE-2023-52622 |
| ubuntu | https://nvd.nist.gov/vuln/detail/CVE-2023-52622 | https://ubuntu.com/security/CVE-2023-52622 |
| ubuntu | https://launchpad.net/bugs/cve/CVE-2023-52622 | https://ubuntu.com/security/CVE-2023-52622 |
| ubuntu | https://security-tracker.debian.org/tracker/CVE-2023-52622 | https://ubuntu.com/security/CVE-2023-52622 |
| debian |  | https://security-tracker.debian.org/tracker/CVE-2023-52622 |
| cve_search |  | https://git.kernel.org/stable/c/cd1f93ca97a9136989f3bd2bf90696732a2ed644 |
| cve_search |  | https://git.kernel.org/stable/c/b183fe8702e78bba3dcef8e7193cab6898abee07 |
| cve_search |  | https://git.kernel.org/stable/c/cfbbb3199e71b63fc26cee0ebff327c47128a1e8 |
| cve_search |  | https://git.kernel.org/stable/c/d76c8d7ffe163c6bf2f1ef680b0539c2b3902b90 |
| cve_search |  | https://git.kernel.org/stable/c/6d2cbf517dcabc093159cf138ad5712c9c7fa954 |
| cve_search |  | https://git.kernel.org/stable/c/8b1413dbfe49646eda2c00c0f1144ee9d3368e0c |
| cve_search |  | https://git.kernel.org/stable/c/dc3e0f55bec4410f3d74352c4a7c79f518088ee2 |
| cve_search |  | https://git.kernel.org/stable/c/5d1935ac02ca5aee364a449a35e2977ea84509b0 |
| ubuntu | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-52622 | https://ubuntu.com/security/CVE-2023-52622 |

</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  |
| ------- | -------- | ------- | -------- | --------- |
| linux |  | https://git.kernel.org/linus/5d1935ac02ca5aee364a449a35e2977ea84509b0 | https://git.kernel.org/linus/1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 | ubuntu |

</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:ext4: avoid online resizing failures due to oversized flex bgWhen we online resize an ext4 filesystem with a oversized flexbg_size,     mkfs.ext4 -F -G 67108864 $dev -b 4096 100M     mount $dev $dir     resize2fs $dev 16Gthe following WARN_ON is triggered:==================================================================WARNING: CPU: 0 PID: 427 at mm/page_alloc.c:4402 __alloc_pages+0x411/0x550Modules linked in: sg(E)CPU: 0 PID: 427 Comm: resize2fs Tainted: G  E  6.6.0-rc5+ #314RIP: 0010:__alloc_pages+0x411/0x550Call Trace: <TASK> __kmalloc_large_node+0xa2/0x200 __kmalloc+0x16e/0x290 ext4_resize_fs+0x481/0xd80 __ext4_ioctl+0x1616/0x1d90 ext4_ioctl+0x12/0x20 __x64_sys_ioctl+0xf0/0x150 do_syscall_64+0x3b/0x90==================================================================This is because flexbg_size is too large and the size of the new_group_dataarray to be allocated exceeds MAX_ORDER. Currently, the minimum value ofMAX_ORDER is 8, the minimum value of PAGE_SIZE is 4096, the correspondingmaximum number of groups that can be allocated is: (PAGE_SIZE << MAX_ORDER) / sizeof(struct ext4_new_group_data) ? 21845And the value that is down-aligned to the power of 2 is 16384. Therefore,this value is defined as MAX_RESIZE_BG, and the number of groups addedeach time does not exceed this value during resizing, and is added multipletimes to complete the online resizing. The difference is that the metadatain a flex_bg may be more dispersed. 
 openEuler评分：
  4.4
 Vector：CVSS：2.0/AV:L/AC:L/PR:H/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-20.03-LTS-SP1(4.19.90):受影响
2.openEuler-20.03-LTS-SP4(4.19.90):受影响
3.openEuler-22.03-LTS(5.10.0):受影响
4.openEuler-22.03-LTS-SP1(5.10.0):受影响
5.openEuler-22.03-LTS-SP2(5.10.0):受影响
6.openEuler-22.03-LTS-SP3(5.10.0):受影响
7.master(6.1.0):不受影响
8.openEuler-22.03-LTS-Next(5.10.0):不受影响
9.openEuler-24.03-LTS:不受影响
10.openEuler-24.03-LTS-Next:不受影响

修复是否涉及abi变化(是/否)：
  1.openEuler-20.03-LTS-SP1(4.19.90):否
2.openEuler-20.03-LTS-SP4(4.19.90):否
3.openEuler-22.03-LTS(5.10.0):否
4.openEuler-22.03-LTS-SP1(5.10.0):否
5.openEuler-22.03-LTS-SP2(5.10.0):否
6.openEuler-22.03-LTS-SP3(5.10.0):否
7.master(6.1.0):否
8.openEuler-22.03-LTS-Next(5.10.0):否
9.openEuler-24.03-LTS:否
10.openEuler-24.03-LTS-Next:否

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2024-1487

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