CVE-2021-47346

一、漏洞信息
 漏洞编号：[CVE-2021-47346](https://nvd.nist.gov/vuln/detail/CVE-2021-47346)
 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 None
  Vector：CVSS：2.0/
 漏洞简述：
  In the Linux kernel, the following vulnerability has been resolved:coresight: tmc-etf: Fix global-out-of-bounds in tmc_update_etf_buffer()commit 6f755e85c332 ( coresight: Add helper for inserting synchronizationpackets ) removed trailing   0  from barrier_pkt array and updated thecall sites like etb_update_buffer() to have proper checks for barrier_pktsize before read but missed updating tmc_update_etf_buffer() which stillreads barrier_pkt past the array size resulting in KASAN out-of-boundsbug. Fix this by adding a check for barrier_pkt size before accessinglike it is done in etb_update_buffer(). BUG: KASAN: global-out-of-bounds in tmc_update_etf_buffer+0x4b8/0x698 Read of size 4 at addr ffffffd05b7d1030 by task perf/2629 Call trace:  dump_backtrace+0x0/0x27c  show_stack+0x20/0x2c  dump_stack+0x11c/0x188  print_address_description+0x3c/0x4a4  __kasan_report+0x140/0x164  kasan_report+0x10/0x18  __asan_report_load4_noabort+0x1c/0x24  tmc_update_etf_buffer+0x4b8/0x698  etm_event_stop+0x248/0x2d8  etm_event_del+0x20/0x2c  event_sched_out+0x214/0x6f0  group_sched_out+0xd0/0x270  ctx_sched_out+0x2ec/0x518  __perf_event_task_sched_out+0x4fc/0xe6c  __schedule+0x1094/0x16a0  preempt_schedule_irq+0x88/0x170  arm64_preempt_schedule_irq+0xf0/0x18c  el1_irq+0xe8/0x180  perf_event_exec+0x4d8/0x56c  setup_new_exec+0x204/0x400  load_elf_binary+0x72c/0x18c0  search_binary_handler+0x13c/0x420  load_script+0x500/0x6c4  search_binary_handler+0x13c/0x420  exec_binprm+0x118/0x654  __do_execve_file+0x77c/0xba4  __arm64_compat_sys_execve+0x98/0xac  el0_svc_common+0x1f8/0x5e0  el0_svc_compat_handler+0x84/0xb0  el0_svc_compat+0x10/0x50 The buggy address belongs to the variable:  barrier_pkt+0x10/0x40 Memory state around the buggy address:  ffffffd05b7d0f00: fa fa fa fa 04 fa fa fa fa fa fa fa 00 00 00 00  ffffffd05b7d0f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffffffd05b7d1000: 00 00 00 00 00 00 fa fa fa fa fa fa 00 00 00 03                                      ^  ffffffd05b7d1080: fa fa fa fa 00 02 fa fa fa fa fa fa 03 fa fa fa  ffffffd05b7d1100: fa fa fa fa 00 00 00 00 05 fa fa fa fa fa fa fa ==================================================================
 漏洞公开时间：2024-05-21 23:15:21
 漏洞创建时间：2024-05-22 00:12:30
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2021-47346
<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/0115687be7b13993066aef602253a53d55f5b11f |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/04bd77ef4f4d9fc6102023b85f4590fc2130aac5 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/35c1c4bd2d59ad734129d4e232af9d1098023918 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/5fae8a946ac2df879caf3f79a193d4766d00239b |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/733d4d95c0101d5f277b8e4910411d016e49a9dc |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/ef0a06acc6b16388640ad367eedfa2a17f1945db |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-47346 | https://bugzilla.suse.com/show_bug.cgi?id=1224921 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2021-47346 | https://bugzilla.suse.com/show_bug.cgi?id=1224921 |
| suse_bugzilla | https://git.kernel.org/stable/c/0115687be7b13993066aef602253a53d55f5b11f | https://bugzilla.suse.com/show_bug.cgi?id=1224921 |
| suse_bugzilla | https://git.kernel.org/stable/c/04bd77ef4f4d9fc6102023b85f4590fc2130aac5 | https://bugzilla.suse.com/show_bug.cgi?id=1224921 |
| suse_bugzilla | https://git.kernel.org/stable/c/35c1c4bd2d59ad734129d4e232af9d1098023918 | https://bugzilla.suse.com/show_bug.cgi?id=1224921 |
| suse_bugzilla | https://git.kernel.org/stable/c/5fae8a946ac2df879caf3f79a193d4766d00239b | https://bugzilla.suse.com/show_bug.cgi?id=1224921 |
| suse_bugzilla | https://git.kernel.org/stable/c/733d4d95c0101d5f277b8e4910411d016e49a9dc | https://bugzilla.suse.com/show_bug.cgi?id=1224921 |
| suse_bugzilla | https://git.kernel.org/stable/c/ef0a06acc6b16388640ad367eedfa2a17f1945db | https://bugzilla.suse.com/show_bug.cgi?id=1224921 |
| suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2021/CVE-2021-47346.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1224921 |
| redhat_bugzilla | https://lore.kernel.org/linux-cve-announce/2024052139-CVE-2021-47346-dcfa@gregkh/T | https://bugzilla.redhat.com/show_bug.cgi?id=2282408 |
| ubuntu | https://www.cve.org/CVERecord?id=CVE-2021-47346 | https://ubuntu.com/security/CVE-2021-47346 |
| ubuntu | https://git.kernel.org/linus/5fae8a946ac2df879caf3f79a193d4766d00239b (5.14-rc1) | https://ubuntu.com/security/CVE-2021-47346 |
| ubuntu | https://git.kernel.org/stable/c/04bd77ef4f4d9fc6102023b85f4590fc2130aac5 | https://ubuntu.com/security/CVE-2021-47346 |
| ubuntu | https://git.kernel.org/stable/c/ef0a06acc6b16388640ad367eedfa2a17f1945db | https://ubuntu.com/security/CVE-2021-47346 |
| ubuntu | https://git.kernel.org/stable/c/35c1c4bd2d59ad734129d4e232af9d1098023918 | https://ubuntu.com/security/CVE-2021-47346 |
| ubuntu | https://git.kernel.org/stable/c/733d4d95c0101d5f277b8e4910411d016e49a9dc | https://ubuntu.com/security/CVE-2021-47346 |
| ubuntu | https://git.kernel.org/stable/c/0115687be7b13993066aef602253a53d55f5b11f | https://ubuntu.com/security/CVE-2021-47346 |
| ubuntu | https://git.kernel.org/stable/c/5fae8a946ac2df879caf3f79a193d4766d00239b | https://ubuntu.com/security/CVE-2021-47346 |
| ubuntu | https://nvd.nist.gov/vuln/detail/CVE-2021-47346 | https://ubuntu.com/security/CVE-2021-47346 |
| ubuntu | https://launchpad.net/bugs/cve/CVE-2021-47346 | https://ubuntu.com/security/CVE-2021-47346 |
| ubuntu | https://security-tracker.debian.org/tracker/CVE-2021-47346 | https://ubuntu.com/security/CVE-2021-47346 |

</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/5fae8a946ac2df879caf3f79a193d4766d00239b | https://git.kernel.org/linus/0c3fc4d5fa26092853278145aca9b21fa52a3e93 | 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:coresight: tmc-etf: Fix global-out-of-bounds in tmc_update_etf_buffer()commit 6f755e85c332 ( coresight: Add helper for inserting synchronizationpackets ) removed trailing   0  from barrier_pkt array and updated thecall sites like etb_update_buffer() to have proper checks for barrier_pktsize before read but missed updating tmc_update_etf_buffer() which stillreads barrier_pkt past the array size resulting in KASAN out-of-boundsbug. Fix this by adding a check for barrier_pkt size before accessinglike it is done in etb_update_buffer(). BUG: KASAN: global-out-of-bounds in tmc_update_etf_buffer+0x4b8/0x698 Read of size 4 at addr ffffffd05b7d1030 by task perf/2629 Call trace:  dump_backtrace+0x0/0x27c  show_stack+0x20/0x2c  dump_stack+0x11c/0x188  print_address_description+0x3c/0x4a4  __kasan_report+0x140/0x164  kasan_report+0x10/0x18  __asan_report_load4_noabort+0x1c/0x24  tmc_update_etf_buffer+0x4b8/0x698  etm_event_stop+0x248/0x2d8  etm_event_del+0x20/0x2c  event_sched_out+0x214/0x6f0  group_sched_out+0xd0/0x270  ctx_sched_out+0x2ec/0x518  __perf_event_task_sched_out+0x4fc/0xe6c  __schedule+0x1094/0x16a0  preempt_schedule_irq+0x88/0x170  arm64_preempt_schedule_irq+0xf0/0x18c  el1_irq+0xe8/0x180  perf_event_exec+0x4d8/0x56c  setup_new_exec+0x204/0x400  load_elf_binary+0x72c/0x18c0  search_binary_handler+0x13c/0x420  load_script+0x500/0x6c4  search_binary_handler+0x13c/0x420  exec_binprm+0x118/0x654  __do_execve_file+0x77c/0xba4  __arm64_compat_sys_execve+0x98/0xac  el0_svc_common+0x1f8/0x5e0  el0_svc_compat_handler+0x84/0xb0  el0_svc_compat+0x10/0x50 The buggy address belongs to the variable:  barrier_pkt+0x10/0x40 Memory state around the buggy address:  ffffffd05b7d0f00: fa fa fa fa 04 fa fa fa fa fa fa fa 00 00 00 00  ffffffd05b7d0f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffffffd05b7d1000: 00 00 00 00 00 00 fa fa fa fa fa fa 00 00 00 03                                      ^  ffffffd05b7d1080: fa fa fa fa 00 02 fa fa fa fa fa fa 03 fa fa fa  ffffffd05b7d1100: fa fa fa fa 00 00 00 00 05 fa fa fa fa fa fa fa ==================================================================
 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.openEuler-22.03-LTS-SP1(5.10.0):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(6.1.0):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

src-openEuler/kernel
关闭

内容风险标识

评论 (27)

src-openEuler/kernel关闭 .gitee-modal { width: 500px !important; }

内容风险标识

CVE-2021-47346

评论 (27)

搜索帮助

src-openEuler/kernel
关闭