CVE-2023-53215

一、漏洞信息
 漏洞编号：[CVE-2023-53215](https://nvd.nist.gov/vuln/detail/CVE-2023-53215)
 漏洞归属组件：[kernel](https://gitee.com/src-openeuler/kernel)
 漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.19,6.4.0,6.6.0
 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:sched/fair: Don t balance task to its current running CPUWe ve run into the case that the balancer tries to balance a migrationdisabled task and trigger the warning in set_task_cpu() like below: ------------[ cut here ]------------ WARNING: CPU: 7 PID: 0 at kernel/sched/core.c:3115 set_task_cpu+0x188/0x240 Modules linked in: hclgevf xt_CHECKSUM ipt_REJECT nf_reject_ipv4 <...snip> CPU: 7 PID: 0 Comm: swapper/7 Kdump: loaded Tainted: G           O       6.1.0-rc4+ #1 Hardware name: Huawei TaiShan 2280 V2/BC82AMDC, BIOS 2280-V2 CS V5.B221.01 12/09/2021 pstate: 604000c9 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : set_task_cpu+0x188/0x240 lr : load_balance+0x5d0/0xc60 sp : ffff80000803bc70 x29: ffff80000803bc70 x28: ffff004089e190e8 x27: ffff004089e19040 x26: ffff007effcabc38 x25: 0000000000000000 x24: 0000000000000001 x23: ffff80000803be84 x22: 000000000000000c x21: ffffb093e79e2a78 x20: 000000000000000c x19: ffff004089e19040 x18: 0000000000000000 x17: 0000000000001fad x16: 0000000000000030 x15: 0000000000000000 x14: 0000000000000003 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000001 x10: 0000000000000400 x9 : ffffb093e4cee530 x8 : 00000000fffffffe x7 : 0000000000ce168a x6 : 000000000000013e x5 : 00000000ffffffe1 x4 : 0000000000000001 x3 : 0000000000000b2a x2 : 0000000000000b2a x1 : ffffb093e6d6c510 x0 : 0000000000000001 Call trace:  set_task_cpu+0x188/0x240  load_balance+0x5d0/0xc60  rebalance_domains+0x26c/0x380  _nohz_idle_balance.isra.0+0x1e0/0x370  run_rebalance_domains+0x6c/0x80  __do_softirq+0x128/0x3d8  ____do_softirq+0x18/0x24  call_on_irq_stack+0x2c/0x38  do_softirq_own_stack+0x24/0x3c  __irq_exit_rcu+0xcc/0xf4  irq_exit_rcu+0x18/0x24  el1_interrupt+0x4c/0xe4  el1h_64_irq_handler+0x18/0x2c  el1h_64_irq+0x74/0x78  arch_cpu_idle+0x18/0x4c  default_idle_call+0x58/0x194  do_idle+0x244/0x2b0  cpu_startup_entry+0x30/0x3c  secondary_start_kernel+0x14c/0x190  __secondary_switched+0xb0/0xb4 ---[ end trace 0000000000000000 ]---Further investigation shows that the warning is superfluous, the migrationdisabled task is just going to be migrated to its current running CPU.This is because that on load balance if the dst_cpu is not allowed by thetask, we ll re-select a new_dst_cpu as a candidate. If no task can bebalanced to dst_cpu we ll try to balance the task to the new_dst_cpuinstead. In this case when the migration disabled task is not on CPU itonly allows to run on its current CPU, load balance will select itscurrent CPU as new_dst_cpu and later triggers the warning above.The new_dst_cpu is chosen from the env->dst_grpmask. Currently itcontains CPUs in sched_group_span() and if we have overlapped groups it spossible to run into this case. This patch makes env->dst_grpmask ofgroup_balance_mask() which exclude any CPUs from the busiest group andsolve the issue. For balancing in a domain with no overlapped groupsthe behaviour keeps same as before.
 漏洞公开时间：2025-09-15 23:15:48
 漏洞创建时间：2025-09-16 00:11:32
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2023-53215
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
|  | https://git.kernel.org/stable/c/32d937f94b7805d4c9028b8727a7d6241547da54 |  |
|  | https://git.kernel.org/stable/c/a5286f4655ce2fa28f477c0b957ea7f323fe2fab |  |
|  | https://git.kernel.org/stable/c/cec1857b1ea5cc3ea2b600564f1c95d1a6f27ad1 |  |
|  | https://git.kernel.org/stable/c/6b0c79aa33075b34c3cdcea4132c0afb3fc42d68 |  |
|  | https://git.kernel.org/stable/c/3cb43222bab8ab328fc91ed30899b3df2efbccfd |  |
|  | https://git.kernel.org/stable/c/78a5f711efceb37e32c48cd6b40addb671fea9cc |  |
|  | https://git.kernel.org/stable/c/34eb902050d473bb2befa15714fb1d30a0991c15 |  |
|  | https://git.kernel.org/stable/c/0dd37d6dd33a9c23351e6115ae8cdac7863bc7de |  |
|  | https://lore.kernel.org/linux-cve-announce/2025091511-CVE-2023-53215-8895@gregkh/T/#u |  |
|  | https://security-tracker.debian.org/tracker/CVE-2023-53215 |  |
|  | https://www.cve.org/CVERecord?id=CVE-2023-53215 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2023-53215 |  |
|  | https://lore.kernel.org/linux-cve-announce/2025091511-CVE-2023-53215-8895@gregkh/T |  |
|  | https://bugzilla.redhat.com/show_bug.cgi?id=2395368 |  |
|  | https://docs.bell-sw.com/security/cves/CVE-2023-53215 |  |

</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:
  七彩瞬析开源风险感知平台
 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  |
| ------- | -------- | ------- | -------- | --------- |
| gregkh/linux |  | https://git.kernel.org/stable/c/32d937f94b7805d4c9028b8727a7d6241547da54 |  | ljqc |
|  |  | https://git.kernel.org/stable/c/32d937f94b7805d4c9028b8727a7d6241547da54 |  | cvelistv5 |
|  |  | https://git.kernel.org/stable/c/a5286f4655ce2fa28f477c0b957ea7f323fe2fab |  | cvelistv5 |
|  |  | https://git.kernel.org/stable/c/cec1857b1ea5cc3ea2b600564f1c95d1a6f27ad1 |  | cvelistv5 |
|  |  | https://git.kernel.org/stable/c/6b0c79aa33075b34c3cdcea4132c0afb3fc42d68 |  | cvelistv5 |
|  |  | https://git.kernel.org/stable/c/3cb43222bab8ab328fc91ed30899b3df2efbccfd |  | cvelistv5 |
|  |  | https://git.kernel.org/stable/c/78a5f711efceb37e32c48cd6b40addb671fea9cc |  | cvelistv5 |
|  |  | https://git.kernel.org/stable/c/34eb902050d473bb2befa15714fb1d30a0991c15 |  | cvelistv5 |
|  |  | https://git.kernel.org/stable/c/0dd37d6dd33a9c23351e6115ae8cdac7863bc7de |  | cvelistv5 |

</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:sched/fair: Don t balance task to its current running CPUWe ve run into the case that the balancer tries to balance a migrationdisabled task and trigger the warning in set_task_cpu() like below: ------------[ cut here ]------------ WARNING: CPU: 7 PID: 0 at kernel/sched/core.c:3115 set_task_cpu+0x188/0x240 Modules linked in: hclgevf xt_CHECKSUM ipt_REJECT nf_reject_ipv4 &lt;...snip&gt; CPU: 7 PID: 0 Comm: swapper/7 Kdump: loaded Tainted: G           O       6.1.0-rc4+ #1 Hardware name: Huawei TaiShan 2280 V2/BC82AMDC, BIOS 2280-V2 CS V5.B221.01 12/09/2021 pstate: 604000c9 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : set_task_cpu+0x188/0x240 lr : load_balance+0x5d0/0xc60 sp : ffff80000803bc70 x29: ffff80000803bc70 x28: ffff004089e190e8 x27: ffff004089e19040 x26: ffff007effcabc38 x25: 0000000000000000 x24: 0000000000000001 x23: ffff80000803be84 x22: 000000000000000c x21: ffffb093e79e2a78 x20: 000000000000000c x19: ffff004089e19040 x18: 0000000000000000 x17: 0000000000001fad x16: 0000000000000030 x15: 0000000000000000 x14: 0000000000000003 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000001 x10: 0000000000000400 x9 : ffffb093e4cee530 x8 : 00000000fffffffe x7 : 0000000000ce168a x6 : 000000000000013e x5 : 00000000ffffffe1 x4 : 0000000000000001 x3 : 0000000000000b2a x2 : 0000000000000b2a x1 : ffffb093e6d6c510 x0 : 0000000000000001 Call trace:  set_task_cpu+0x188/0x240  load_balance+0x5d0/0xc60  rebalance_domains+0x26c/0x380  _nohz_idle_balance.isra.0+0x1e0/0x370  run_rebalance_domains+0x6c/0x80  __do_softirq+0x128/0x3d8  ____do_softirq+0x18/0x24  call_on_irq_stack+0x2c/0x38  do_softirq_own_stack+0x24/0x3c  __irq_exit_rcu+0xcc/0xf4  irq_exit_rcu+0x18/0x24  el1_interrupt+0x4c/0xe4  el1h_64_irq_handler+0x18/0x2c  el1h_64_irq+0x74/0x78  arch_cpu_idle+0x18/0x4c  default_idle_call+0x58/0x194  do_idle+0x244/0x2b0  cpu_startup_entry+0x30/0x3c  secondary_start_kernel+0x14c/0x190  __secondary_switched+0xb0/0xb4 ---[ end trace 0000000000000000 ]---Further investigation shows that the warning is superfluous, the migrationdisabled task is just going to be migrated to its current running CPU.This is because that on load balance if the dst_cpu is not allowed by thetask, we ll re-select a new_dst_cpu as a candidate. If no task can bebalanced to dst_cpu we ll try to balance the task to the new_dst_cpuinstead. In this case when the migration disabled task is not on CPU itonly allows to run on its current CPU, load balance will select itscurrent CPU as new_dst_cpu and later triggers the warning above.The new_dst_cpu is chosen from the env-&gt;dst_grpmask. Currently itcontains CPUs in sched_group_span() and if we have overlapped groups it spossible to run into this case. This patch makes env-&gt;dst_grpmask ofgroup_balance_mask() which exclude any CPUs from the busiest group andsolve the issue. For balancing in a domain with no overlapped groupsthe behaviour keeps same as before.The Linux kernel CVE team has assigned CVE-2023-53215 to this issue.
 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-20.03-LTS-SP4(4.19.90):受影响
2.master(6.12.33):不受影响
3.openEuler-22.03-LTS-SP3(5.10.0):不受影响
4.openEuler-22.03-LTS-SP4(5.10.0):不受影响
5.openEuler-24.03-LTS(6.6.0):不受影响
6.openEuler-24.03-LTS-Next(6.6.0):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(5.10.0):否
4.openEuler-22.03-LTS-SP4(5.10.0):否
5.openEuler-24.03-LTS(6.6.0):否
6.openEuler-24.03-LTS-Next(6.6.0):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-20.03-LTS-SP4(4.19.90):正常修复
2.master(6.12.33):不受影响-漏洞代码不能被攻击者触发
3.openEuler-22.03-LTS-SP3(5.10.0):不受影响-漏洞代码不能被攻击者触发
4.openEuler-22.03-LTS-SP4(5.10.0):不受影响-漏洞代码不能被攻击者触发
5.openEuler-24.03-LTS(6.6.0):不受影响-漏洞代码不能被攻击者触发
6.openEuler-24.03-LTS-Next(6.6.0):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

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