CVE-2021-47582

一、漏洞信息
 漏洞编号：[CVE-2021-47582](https://nvd.nist.gov/vuln/detail/CVE-2021-47582)
 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 V2.0分值：
  BaseScore：0.0 Medium
  Vector：CVSS：2.0/
 漏洞简述：
  In the Linux kernel, the following vulnerability has been resolved:USB: core: Make do_proc_control() and do_proc_bulk() killableThe USBDEVFS_CONTROL and USBDEVFS_BULK ioctls invokeusb_start_wait_urb(), which contains an uninterruptible wait with auser-specified timeout value.  If timeout value is very large and thedevice being accessed does not respond in a reasonable amount of time,the kernel will complain about  Task X blocked for more than Nseconds , as found in testing by syzbot:INFO: task syz-executor.0:8700 blocked for more than 143 seconds.      Not tainted 5.14.0-rc7-syzkaller #0 echo 0 > /proc/sys/kernel/hung_task_timeout_secs  disables this message.task:syz-executor.0  state:D stack:23192 pid: 8700 ppid:  8455 flags:0x00004004Call Trace: context_switch kernel/sched/core.c:4681 [inline] __schedule+0xc07/0x11f0 kernel/sched/core.c:5938 schedule+0x14b/0x210 kernel/sched/core.c:6017 schedule_timeout+0x98/0x2f0 kernel/time/timer.c:1857 do_wait_for_common+0x2da/0x480 kernel/sched/completion.c:85 __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion_timeout+0x46/0x60 kernel/sched/completion.c:157 usb_start_wait_urb+0x167/0x550 drivers/usb/core/message.c:63 do_proc_bulk+0x978/0x1080 drivers/usb/core/devio.c:1236 proc_bulk drivers/usb/core/devio.c:1273 [inline] usbdev_do_ioctl drivers/usb/core/devio.c:2547 [inline] usbdev_ioctl+0x3441/0x6b10 drivers/usb/core/devio.c:2713...To fix this problem, this patch replaces usbfs s calls tousb_control_msg() and usb_bulk_msg() with special-purpose code thatdoes essentially the same thing (as recommended in the comment forusb_start_wait_urb()), except that it always uses a killable wait andit uses GFP_KERNEL rather than GFP_NOIO.
 漏洞公开时间：2024-06-19 23:15:52
 漏洞创建时间：2024-07-09 18:44:51
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2021-47582
<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/403716741c6c2c510dce44e88f085a740f535de6 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/ae8709b296d80c7f45aa1f35c0e7659ad69edce1 |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-47582 | https://bugzilla.suse.com/show_bug.cgi?id=1226559 |
| suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2021/CVE-2021-47582.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1226559 |
| suse_bugzilla | https://git.kernel.org/stable/c/403716741c6c2c510dce44e88f085a740f535de6 | https://bugzilla.suse.com/show_bug.cgi?id=1226559 |
| suse_bugzilla | https://git.kernel.org/stable/c/ae8709b296d80c7f45aa1f35c0e7659ad69edce1 | https://bugzilla.suse.com/show_bug.cgi?id=1226559 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2021-47582 | https://bugzilla.suse.com/show_bug.cgi?id=1226559 |
| redhat_bugzilla | https://lore.kernel.org/linux-cve-announce/2024061916-CVE-2021-47582-69aa@gregkh/T | https://bugzilla.redhat.com/show_bug.cgi?id=2293247 |
| ubuntu | https://www.cve.org/CVERecord?id=CVE-2021-47582 | https://ubuntu.com/security/CVE-2021-47582 |
| ubuntu | https://git.kernel.org/linus/ae8709b296d80c7f45aa1f35c0e7659ad69edce1 (5.16-rc1) | https://ubuntu.com/security/CVE-2021-47582 |
| ubuntu | https://git.kernel.org/stable/c/403716741c6c2c510dce44e88f085a740f535de6 | https://ubuntu.com/security/CVE-2021-47582 |
| ubuntu | https://git.kernel.org/stable/c/ae8709b296d80c7f45aa1f35c0e7659ad69edce1 | https://ubuntu.com/security/CVE-2021-47582 |
| ubuntu | https://nvd.nist.gov/vuln/detail/CVE-2021-47582 | https://ubuntu.com/security/CVE-2021-47582 |
| ubuntu | https://launchpad.net/bugs/cve/CVE-2021-47582 | https://ubuntu.com/security/CVE-2021-47582 |
| ubuntu | https://security-tracker.debian.org/tracker/CVE-2021-47582 | https://ubuntu.com/security/CVE-2021-47582 |
| cve_search |  | https://git.kernel.org/stable/c/403716741c6c2c510dce44e88f085a740f535de6 |
| cve_search |  | https://git.kernel.org/stable/c/ae8709b296d80c7f45aa1f35c0e7659ad69edce1 |

</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/ae8709b296d80c7f45aa1f35c0e7659ad69edce1 | 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:USB: core: Make do_proc_control() and do_proc_bulk() killableThe USBDEVFS_CONTROL and USBDEVFS_BULK ioctls invokeusb_start_wait_urb(), which contains an uninterruptible wait with auser-specified timeout value.  If timeout value is very large and thedevice being accessed does not respond in a reasonable amount of time,the kernel will complain about  Task X blocked for more than Nseconds , as found in testing by syzbot:INFO: task syz-executor.0:8700 blocked for more than 143 seconds.      Not tainted 5.14.0-rc7-syzkaller #0 echo 0 > /proc/sys/kernel/hung_task_timeout_secs  disables this message.task:syz-executor.0  state:D stack:23192 pid: 8700 ppid:  8455 flags:0x00004004Call Trace: context_switch kernel/sched/core.c:4681 [inline] __schedule+0xc07/0x11f0 kernel/sched/core.c:5938 schedule+0x14b/0x210 kernel/sched/core.c:6017 schedule_timeout+0x98/0x2f0 kernel/time/timer.c:1857 do_wait_for_common+0x2da/0x480 kernel/sched/completion.c:85 __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion_timeout+0x46/0x60 kernel/sched/completion.c:157 usb_start_wait_urb+0x167/0x550 drivers/usb/core/message.c:63 do_proc_bulk+0x978/0x1080 drivers/usb/core/devio.c:1236 proc_bulk drivers/usb/core/devio.c:1273 [inline] usbdev_do_ioctl drivers/usb/core/devio.c:2547 [inline] usbdev_ioctl+0x3441/0x6b10 drivers/usb/core/devio.c:2713...To fix this problem, this patch replaces usbfs s calls tousb_control_msg() and usb_bulk_msg() with special-purpose code thatdoes essentially the same thing (as recommended in the comment forusb_start_wait_urb()), except that it always uses a killable wait andit uses GFP_KERNEL rather than GFP_NOIO.   
 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-22.03-LTS-SP4(5.10.0):受影响
4.openEuler-20.03-LTS-SP4(4.19.90):不受影响
5.master(6.1.0):不受影响
6.openEuler-24.03-LTS(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(6.1.0):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-2024-1995

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