CVE-2024-47688

一、漏洞信息
 漏洞编号：[CVE-2024-47688](https://nvd.nist.gov/vuln/detail/CVE-2024-47688)
 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 V3.0分值：
  BaseScore：5.5 Medium
  Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
 漏洞简述：
  In the Linux kernel, the following vulnerability has been resolved:driver core: Fix a potential null-ptr-deref in module_add_driver()Inject fault while probing of-fpga-region, if kasprintf() fails inmodule_add_driver(), the second sysfs_remove_link() in exit path will causenull-ptr-deref as below because kernfs_name_hash() will call strlen() withNULL driver_name.Fix it by releasing resources based on the exit path sequence.	 KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]	 Mem abort info:	   ESR = 0x0000000096000005	   EC = 0x25: DABT (current EL), IL = 32 bits	   SET = 0, FnV = 0	   EA = 0, S1PTW = 0	   FSC = 0x05: level 1 translation fault	 Data abort info:	   ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000	   CM = 0, WnR = 0, TnD = 0, TagAccess = 0	   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0	 [dfffffc000000000] address between user and kernel address ranges	 Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP	 Dumping ftrace buffer:	    (ftrace buffer empty)	 Modules linked in: of_fpga_region(+) fpga_region fpga_bridge cfg80211 rfkill 8021q garp mrp stp llc ipv6 [last unloaded: of_fpga_region]	 CPU: 2 UID: 0 PID: 2036 Comm: modprobe Not tainted 6.11.0-rc2-g6a0e38264012 #295	 Hardware name: linux,dummy-virt (DT)	 pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)	 pc : strlen+0x24/0xb0	 lr : kernfs_name_hash+0x1c/0xc4	 sp : ffffffc081f97380	 x29: ffffffc081f97380 x28: ffffffc081f97b90 x27: ffffff80c821c2a0	 x26: ffffffedac0be418 x25: 0000000000000000 x24: ffffff80c09d2000	 x23: 0000000000000000 x22: 0000000000000000 x21: 0000000000000000	 x20: 0000000000000000 x19: 0000000000000000 x18: 0000000000001840	 x17: 0000000000000000 x16: 0000000000000000 x15: 1ffffff8103f2e42	 x14: 00000000f1f1f1f1 x13: 0000000000000004 x12: ffffffb01812d61d	 x11: 1ffffff01812d61c x10: ffffffb01812d61c x9 : dfffffc000000000	 x8 : 0000004fe7ed29e4 x7 : ffffff80c096b0e7 x6 : 0000000000000001	 x5 : ffffff80c096b0e0 x4 : 1ffffffdb990efa2 x3 : 0000000000000000	 x2 : 0000000000000000 x1 : dfffffc000000000 x0 : 0000000000000000	 Call trace:	  strlen+0x24/0xb0	  kernfs_name_hash+0x1c/0xc4	  kernfs_find_ns+0x118/0x2e8	  kernfs_remove_by_name_ns+0x80/0x100	  sysfs_remove_link+0x74/0xa8	  module_add_driver+0x278/0x394	  bus_add_driver+0x1f0/0x43c	  driver_register+0xf4/0x3c0	  __platform_driver_register+0x60/0x88	  of_fpga_region_init+0x20/0x1000 [of_fpga_region]	  do_one_initcall+0x110/0x788	  do_init_module+0x1dc/0x5c8	  load_module+0x3c38/0x4cac	  init_module_from_file+0xd4/0x128	  idempotent_init_module+0x2cc/0x528	  __arm64_sys_finit_module+0xac/0x100	  invoke_syscall+0x6c/0x258	  el0_svc_common.constprop.0+0x160/0x22c	  do_el0_svc+0x44/0x5c	  el0_svc+0x48/0xb8	  el0t_64_sync_handler+0x13c/0x158	  el0t_64_sync+0x190/0x194	 Code: f2fbffe1 a90157f4 12000802 aa0003f5 (38e16861)	 ---[ end trace 0000000000000000 ]---	 Kernel panic - not syncing: Oops: Fatal exception
 漏洞公开时间：2024-10-21 20:15:05
 漏洞创建时间：2024-10-21 20:42:45
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2024-47688
<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/18ec12c97b39ff6aa15beb8d2b25d15cd44b87d8 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/4b5d48b7a29cc6d508121a4b4e0c97a891e5273c |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/b8e45b910525704010d10c9dcbf2abf3005aa97c |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/dcb9d581dee4c23f2378b6650511ece80dda4e2f |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-47688 | https://bugzilla.suse.com/show_bug.cgi?id=1232009 |
| suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-47688.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1232009 |
| suse_bugzilla | https://git.kernel.org/stable/c/b8e45b910525704010d10c9dcbf2abf3005aa97c | https://bugzilla.suse.com/show_bug.cgi?id=1232009 |
| suse_bugzilla | https://git.kernel.org/stable/c/4b5d48b7a29cc6d508121a4b4e0c97a891e5273c | https://bugzilla.suse.com/show_bug.cgi?id=1232009 |
| suse_bugzilla | https://git.kernel.org/stable/c/dcb9d581dee4c23f2378b6650511ece80dda4e2f | https://bugzilla.suse.com/show_bug.cgi?id=1232009 |
| suse_bugzilla | https://git.kernel.org/stable/c/18ec12c97b39ff6aa15beb8d2b25d15cd44b87d8 | https://bugzilla.suse.com/show_bug.cgi?id=1232009 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2024-47688 | https://bugzilla.suse.com/show_bug.cgi?id=1232009 |
| suse_bugzilla | https://bugzilla.redhat.com/show_bug.cgi?id=2320263 | https://bugzilla.suse.com/show_bug.cgi?id=1232009 |
| debian |  | https://security-tracker.debian.org/tracker/CVE-2024-47688 |
| mageia |  | http://advisories.mageia.org/MGASA-2024-0345.html |

</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/18ec12c97b39ff6aa15beb8d2b25d15cd44b87d8 |  | nvd |
|  |  | https://git.kernel.org/stable/c/4b5d48b7a29cc6d508121a4b4e0c97a891e5273c |  | nvd |
|  |  | https://git.kernel.org/stable/c/b8e45b910525704010d10c9dcbf2abf3005aa97c |  | nvd |
|  |  | https://git.kernel.org/stable/c/dcb9d581dee4c23f2378b6650511ece80dda4e2f |  | nvd |

</details>

二、漏洞分析结构反馈
 影响性分析说明：
  Reserved.
 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-24.03-LTS(6.6.0):受影响
2.openEuler-20.03-LTS-SP4(4.19.90):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.master(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

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(6.6.0):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
8.openEuler-24.03-LTS-SP1(6.6.0):否

原因说明：
  1.openEuler-24.03-LTS(6.6.0):正常修复
2.master(6.6.0):不受影响-漏洞代码不能被攻击者触发
3.openEuler-24.03-LTS-Next(6.6.0):不受影响-漏洞代码不能被攻击者触发
4.openEuler-20.03-LTS-SP4(4.19.90):不受影响-漏洞代码不存在
5.openEuler-22.03-LTS-SP3(5.10.0):不受影响-漏洞代码不存在
6.openEuler-22.03-LTS-SP4(5.10.0):不受影响-漏洞代码不存在
7.openEuler-24.03-LTS-SP1(6.6.0):不受影响-漏洞代码不存在

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