CVE-2021-47065

一、漏洞信息
 漏洞编号：[CVE-2021-47065](https://nvd.nist.gov/vuln/detail/CVE-2021-47065)
 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:rtw88: Fix array overrun in rtw_get_tx_power_params()Using a kernel with the Undefined Behaviour Sanity Checker (UBSAN) enabled, thefollowing array overrun is logged:================================================================================UBSAN: array-index-out-of-bounds in /home/finger/wireless-drivers-next/drivers/net/wireless/realtek/rtw88/phy.c:1789:34index 5 is out of range for type  u8 [5] CPU: 2 PID: 84 Comm: kworker/u16:3 Tainted: G           O      5.12.0-rc5-00086-gd88bba47038e-dirty #651Hardware name: TOSHIBA TECRA A50-A/TECRA A50-A, BIOS Version 4.50   09/29/2014Workqueue: phy0 ieee80211_scan_work [mac80211]Call Trace: dump_stack+0x64/0x7c ubsan_epilogue+0x5/0x40 __ubsan_handle_out_of_bounds.cold+0x43/0x48 rtw_get_tx_power_params+0x83a/drivers/net/wireless/realtek/rtw88/0xad0 [rtw_core] ? rtw_pci_read16+0x20/0x20 [rtw_pci] ? check_hw_ready+0x50/0x90 [rtw_core] rtw_phy_get_tx_power_index+0x4d/0xd0 [rtw_core] rtw_phy_set_tx_power_level+0xee/0x1b0 [rtw_core] rtw_set_channel+0xab/0x110 [rtw_core] rtw_ops_config+0x87/0xc0 [rtw_core] ieee80211_hw_config+0x9d/0x130 [mac80211] ieee80211_scan_state_set_channel+0x81/0x170 [mac80211] ieee80211_scan_work+0x19f/0x2a0 [mac80211] process_one_work+0x1dd/0x3a0 worker_thread+0x49/0x330 ? rescuer_thread+0x3a0/0x3a0 kthread+0x134/0x150 ? kthread_create_worker_on_cpu+0x70/0x70 ret_from_fork+0x22/0x30================================================================================The statement where an array is being overrun is shown in the following snippet:	if (rate <= DESC_RATE11M)		tx_power = pwr_idx_2g->cck_base[group];	else====>		tx_power = pwr_idx_2g->bw40_base[group];The associated arrays are defined in main.h as follows:struct rtw_2g_txpwr_idx {	u8 cck_base[6];	u8 bw40_base[5];	struct rtw_2g_1s_pwr_idx_diff ht_1s_diff;	struct rtw_2g_ns_pwr_idx_diff ht_2s_diff;	struct rtw_2g_ns_pwr_idx_diff ht_3s_diff;	struct rtw_2g_ns_pwr_idx_diff ht_4s_diff;};The problem arises because the value of group is 5 for channel 14. The trivialincrease in the dimension of bw40_base fails as this struct must match the layout ofefuse. The fix is to add the rate as an argument to rtw_get_channel_group() and setthe group for channel 14 to 4 if rate <= DESC_RATE11M.This patch fixes commit fa6dfe6bff24 ( rtw88: resolve order of tx power setting routines )
 漏洞公开时间：2024-03-01 07:15:08
 漏洞创建时间：2024-03-01 07:49:05
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2021-47065
<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/2ff25985ea9ccc6c9af2c77b0b49045adcc62e0e |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/5f3dbced8eaa5c9ed7d6943f3fea99f235a6516a |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/6b5aa0cf321c25f41e09a61c83ee4dc7ab9549cb |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/95fb153c6027924cda3422120169d1890737f3a0 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/9cd09722e18a08b6a3d68b8bccfac39ddc22434c |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-47065 | https://bugzilla.suse.com/show_bug.cgi?id=1220749 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2021-47065 | https://bugzilla.suse.com/show_bug.cgi?id=1220749 |
| suse_bugzilla | https://git.kernel.org/stable/c/2ff25985ea9ccc6c9af2c77b0b49045adcc62e0e | https://bugzilla.suse.com/show_bug.cgi?id=1220749 |
| suse_bugzilla | https://git.kernel.org/stable/c/5f3dbced8eaa5c9ed7d6943f3fea99f235a6516a | https://bugzilla.suse.com/show_bug.cgi?id=1220749 |
| suse_bugzilla | https://git.kernel.org/stable/c/6b5aa0cf321c25f41e09a61c83ee4dc7ab9549cb | https://bugzilla.suse.com/show_bug.cgi?id=1220749 |
| suse_bugzilla | https://git.kernel.org/stable/c/95fb153c6027924cda3422120169d1890737f3a0 | https://bugzilla.suse.com/show_bug.cgi?id=1220749 |
| suse_bugzilla | https://git.kernel.org/stable/c/9cd09722e18a08b6a3d68b8bccfac39ddc22434c | https://bugzilla.suse.com/show_bug.cgi?id=1220749 |
| suse_bugzilla | https://bugzilla.redhat.com/show_bug.cgi?id=2267165 | https://bugzilla.suse.com/show_bug.cgi?id=1220749 |
| redhat_bugzilla | https://lore.kernel.org/linux-cve-announce/2024022954-CVE-2021-47065-be1d@gregkh/T/#u | https://bugzilla.redhat.com/show_bug.cgi?id=2267165 |
| ubuntu | https://git.kernel.org/linus/2ff25985ea9ccc6c9af2c77b0b49045adcc62e0e (5.13-rc1) | https://ubuntu.com/security/CVE-2021-47065 |
| ubuntu | https://www.cve.org/CVERecord?id=CVE-2021-47065 | https://ubuntu.com/security/CVE-2021-47065 |
| ubuntu | https://nvd.nist.gov/vuln/detail/CVE-2021-47065 | https://ubuntu.com/security/CVE-2021-47065 |
| ubuntu | https://launchpad.net/bugs/cve/CVE-2021-47065 | https://ubuntu.com/security/CVE-2021-47065 |
| ubuntu | https://security-tracker.debian.org/tracker/CVE-2021-47065 | https://ubuntu.com/security/CVE-2021-47065 |
| cve_search |  | https://git.kernel.org/stable/c/6b5aa0cf321c25f41e09a61c83ee4dc7ab9549cb |
| cve_search |  | https://git.kernel.org/stable/c/95fb153c6027924cda3422120169d1890737f3a0 |
| cve_search |  | https://git.kernel.org/stable/c/5f3dbced8eaa5c9ed7d6943f3fea99f235a6516a |
| cve_search |  | https://git.kernel.org/stable/c/9cd09722e18a08b6a3d68b8bccfac39ddc22434c |
| cve_search |  | https://git.kernel.org/stable/c/2ff25985ea9ccc6c9af2c77b0b49045adcc62e0e |
| ubuntu | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-47065 | https://ubuntu.com/security/CVE-2021-47065 |

</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/2ff25985ea9ccc6c9af2c77b0b49045adcc62e0e | https://git.kernel.org/linus/fa6dfe6bff246ddd5be3cfe81637f137acd6c294 | 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:rtw88: Fix array overrun in rtw_get_tx_power_params()Using a kernel with the Undefined Behaviour Sanity Checker (UBSAN) enabled, thefollowing array overrun is logged:================================================================================UBSAN: array-index-out-of-bounds in /home/finger/wireless-drivers-next/drivers/net/wireless/realtek/rtw88/phy.c:1789:34index 5 is out of range for type  u8 [5] CPU: 2 PID: 84 Comm: kworker/u16:3 Tainted: G O 5.12.0-rc5-00086-gd88bba47038e-dirty #651Hardware name: TOSHIBA TECRA A50-A/TECRA A50-A, BIOS Version 4.50 09/29/2014Workqueue: phy0 ieee80211_scan_work [mac80211]Call Trace:dump_stack+0x64/0x7cubsan_epilogue+0x5/0x40__ubsan_handle_out_of_bounds.cold+0x43/0x48rtw_get_tx_power_params+0x83a/drivers/net/wireless/realtek/rtw88/0xad0 [rtw_core]? rtw_pci_read16+0x20/0x20 [rtw_pci]? check_hw_ready+0x50/0x90 [rtw_core]rtw_phy_get_tx_power_index+0x4d/0xd0 [rtw_core]rtw_phy_set_tx_power_level+0xee/0x1b0 [rtw_core]rtw_set_channel+0xab/0x110 [rtw_core]rtw_ops_config+0x87/0xc0 [rtw_core]ieee80211_hw_config+0x9d/0x130 [mac80211]ieee80211_scan_state_set_channel+0x81/0x170 [mac80211]ieee80211_scan_work+0x19f/0x2a0 [mac80211]process_one_work+0x1dd/0x3a0worker_thread+0x49/0x330? rescuer_thread+0x3a0/0x3a0kthread+0x134/0x150? kthread_create_worker_on_cpu+0x70/0x70ret_from_fork+0x22/0x30The statement where an array is being overrun is shown in the following snippet:if (rate <= DESC_RATE11M)tx_power = pwr_idx_2g->cck_base[group];else====> tx_power = pwr_idx_2g->bw40_base[group];The associated arrays are defined in main.h as follows:struct rtw_2g_txpwr_idx {u8 cck_base[6];u8 bw40_base[5];struct rtw_2g_1s_pwr_idx_diff ht_1s_diff;struct rtw_2g_ns_pwr_idx_diff ht_2s_diff;struct rtw_2g_ns_pwr_idx_diff ht_3s_diff;struct rtw_2g_ns_pwr_idx_diff ht_4s_diff;};The problem arises because the value of group is 5 for channel 14. The trivialincrease in the dimension of bw40_base fails as this struct must match the layout ofefuse. The fix is to add the rate as an argument to rtw_get_channel_group() and setthe group for channel 14 to 4 if rate <= DESC_RATE11M.This patch fixes commit fa6dfe6bff24 ( rtw88: resolve order of tx power setting routines )
 openEuler评分：
  6.3
 Vector：CVSS：3.0/AV:A/AC:L/PR:N/UI:R/S:U/C:L/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):不受影响
2.openEuler-20.03-LTS-SP4(4.19.90):不受影响
3.openEuler-22.03-LTS(5.10.0):不受影响
4.openEuler-22.03-LTS-SP1(5.10.0):不受影响
5.openEuler-22.03-LTS-SP2(5.10.0):不受影响
6.openEuler-22.03-LTS-SP3(5.10.0):不受影响
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

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