CVE-2024-26615

一、漏洞信息
 漏洞编号：[CVE-2024-26615](https://nvd.nist.gov/vuln/detail/CVE-2024-26615)
 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:net/smc: fix illegal rmb_desc access in SMC-D connection dumpA crash was found when dumping SMC-D connections. It can be reproducedby following steps:- run nginx/wrk test:  smc_run nginx  smc_run wrk -t 16 -c 1000 -d <duration> -H  Connection: Close  <URL>- continuously dump SMC-D connections in parallel:  watch -n 1  smcss -D  BUG: kernel NULL pointer dereference, address: 0000000000000030 CPU: 2 PID: 7204 Comm: smcss Kdump: loaded Tainted: G	E      6.7.0+ #55 RIP: 0010:__smc_diag_dump.constprop.0+0x5e5/0x620 [smc_diag] Call Trace:  <TASK>  ? __die+0x24/0x70  ? page_fault_oops+0x66/0x150  ? exc_page_fault+0x69/0x140  ? asm_exc_page_fault+0x26/0x30  ? __smc_diag_dump.constprop.0+0x5e5/0x620 [smc_diag]  ? __kmalloc_node_track_caller+0x35d/0x430  ? __alloc_skb+0x77/0x170  smc_diag_dump_proto+0xd0/0xf0 [smc_diag]  smc_diag_dump+0x26/0x60 [smc_diag]  netlink_dump+0x19f/0x320  __netlink_dump_start+0x1dc/0x300  smc_diag_handler_dump+0x6a/0x80 [smc_diag]  ? __pfx_smc_diag_dump+0x10/0x10 [smc_diag]  sock_diag_rcv_msg+0x121/0x140  ? __pfx_sock_diag_rcv_msg+0x10/0x10  netlink_rcv_skb+0x5a/0x110  sock_diag_rcv+0x28/0x40  netlink_unicast+0x22a/0x330  netlink_sendmsg+0x1f8/0x420  __sock_sendmsg+0xb0/0xc0  ____sys_sendmsg+0x24e/0x300  ? copy_msghdr_from_user+0x62/0x80  ___sys_sendmsg+0x7c/0xd0  ? __do_fault+0x34/0x160  ? do_read_fault+0x5f/0x100  ? do_fault+0xb0/0x110  ? __handle_mm_fault+0x2b0/0x6c0  __sys_sendmsg+0x4d/0x80  do_syscall_64+0x69/0x180  entry_SYSCALL_64_after_hwframe+0x6e/0x76It is possible that the connection is in process of being establishedwhen we dump it. Assumed that the connection has been registered in alink group by smc_conn_create() but the rmb_desc has not yet beeninitialized by smc_buf_create(), thus causing the illegal access toconn->rmb_desc. So fix it by checking before dump.
 漏洞公开时间：2024-03-12 02:15:19
 漏洞创建时间：2024-03-12 03:09:16
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2024-26615
<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/1fea9969b81c67d0cb1611d1b8b7d19049d937be |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/27aea64838914c6122db5b8bd4bed865c9736f22 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/5fed92ca32eafbfae8b6bee8ca34cca71c6a8b6d |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/68b888d51ac82f2b96bf5e077a31d76afcdef25a |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/6994dba06321e3c48fdad0ba796a063d9d82183a |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/8f3f9186e5bb96a9c9654c41653210e3ea7e48a6 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/a164c2922675d7051805cdaf2b07daffe44f20d9 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/dbc153fd3c142909e564bb256da087e13fbf239c |  |
| redhat_bugzilla | https://lore.kernel.org/linux-cve-announce/20240229155245.1571576-47-lee@kernel.org/T/#u | https://bugzilla.redhat.com/show_bug.cgi?id=2267355 |
| debian |  | https://security-tracker.debian.org/tracker/CVE-2024-26615 |
| ubuntu | https://git.kernel.org/linus/dbc153fd3c142909e564bb256da087e13fbf239c (6.8-rc2) | https://ubuntu.com/security/CVE-2024-26615 |
| ubuntu | https://git.kernel.org/stable/c/27aea64838914c6122db5b8bd4bed865c9736f22 | https://ubuntu.com/security/CVE-2024-26615 |
| ubuntu | https://git.kernel.org/stable/c/1fea9969b81c67d0cb1611d1b8b7d19049d937be | https://ubuntu.com/security/CVE-2024-26615 |
| ubuntu | https://git.kernel.org/stable/c/5fed92ca32eafbfae8b6bee8ca34cca71c6a8b6d | https://ubuntu.com/security/CVE-2024-26615 |
| ubuntu | https://git.kernel.org/stable/c/68b888d51ac82f2b96bf5e077a31d76afcdef25a | https://ubuntu.com/security/CVE-2024-26615 |
| ubuntu | https://git.kernel.org/stable/c/6994dba06321e3c48fdad0ba796a063d9d82183a | https://ubuntu.com/security/CVE-2024-26615 |
| ubuntu | https://git.kernel.org/stable/c/a164c2922675d7051805cdaf2b07daffe44f20d9 | https://ubuntu.com/security/CVE-2024-26615 |
| ubuntu | https://git.kernel.org/stable/c/8f3f9186e5bb96a9c9654c41653210e3ea7e48a6 | https://ubuntu.com/security/CVE-2024-26615 |
| ubuntu | https://git.kernel.org/stable/c/dbc153fd3c142909e564bb256da087e13fbf239c | https://ubuntu.com/security/CVE-2024-26615 |
| ubuntu | https://www.cve.org/CVERecord?id=CVE-2024-26615 | https://ubuntu.com/security/CVE-2024-26615 |
| ubuntu | https://nvd.nist.gov/vuln/detail/CVE-2024-26615 | https://ubuntu.com/security/CVE-2024-26615 |
| ubuntu | https://launchpad.net/bugs/cve/CVE-2024-26615 | https://ubuntu.com/security/CVE-2024-26615 |
| ubuntu | https://security-tracker.debian.org/tracker/CVE-2024-26615 | https://ubuntu.com/security/CVE-2024-26615 |
| ubuntu | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26615 | https://ubuntu.com/security/CVE-2024-26615 |

</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/dbc153fd3c142909e564bb256da087e13fbf239c | https://git.kernel.org/linus/4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d | ubuntu |
| linux-azure |  | https://git.kernel.org/linus/dbc153fd3c142909e564bb256da087e13fbf239c | https://git.kernel.org/linus/4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d | 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:net/smc: fix illegal rmb_desc access in SMC-D connection dumpA crash was found when dumping SMC-D connections. It can be reproducedby following steps:- run nginx/wrk test:  smc_run nginx  smc_run wrk -t 16 -c 1000 -d <duration> -H  Connection: Close  <URL>- continuously dump SMC-D connections in parallel:  watch -n 1  smcss -D  BUG: kernel NULL pointer dereference, address: 0000000000000030 CPU: 2 PID: 7204 Comm: smcss Kdump: loaded Tainted: GE      6.7.0+ #55 RIP: 0010:__smc_diag_dump.constprop.0+0x5e5/0x620 [smc_diag] Call Trace:  <TASK>  ? __die+0x24/0x70  ? page_fault_oops+0x66/0x150  ? exc_page_fault+0x69/0x140  ? asm_exc_page_fault+0x26/0x30  ? __smc_diag_dump.constprop.0+0x5e5/0x620 [smc_diag]  ? __kmalloc_node_track_caller+0x35d/0x430  ? __alloc_skb+0x77/0x170  smc_diag_dump_proto+0xd0/0xf0 [smc_diag]  smc_diag_dump+0x26/0x60 [smc_diag]  netlink_dump+0x19f/0x320  __netlink_dump_start+0x1dc/0x300  smc_diag_handler_dump+0x6a/0x80 [smc_diag]  ? __pfx_smc_diag_dump+0x10/0x10 [smc_diag]  sock_diag_rcv_msg+0x121/0x140  ? __pfx_sock_diag_rcv_msg+0x10/0x10  netlink_rcv_skb+0x5a/0x110  sock_diag_rcv+0x28/0x40  netlink_unicast+0x22a/0x330  netlink_sendmsg+0x1f8/0x420  __sock_sendmsg+0xb0/0xc0  ____sys_sendmsg+0x24e/0x300  ? copy_msghdr_from_user+0x62/0x80  ___sys_sendmsg+0x7c/0xd0  ? __do_fault+0x34/0x160  ? do_read_fault+0x5f/0x100  ? do_fault+0xb0/0x110  ? __handle_mm_fault+0x2b0/0x6c0  __sys_sendmsg+0x4d/0x80  do_syscall_64+0x69/0x180  entry_SYSCALL_64_after_hwframe+0x6e/0x76It is possible that the connection is in process of being establishedwhen we dump it. Assumed that the connection has been registered in alink group by smc_conn_create() but the rmb_desc has not yet beeninitialized by smc_buf_create(), thus causing the illegal access toconn->rmb_desc. So fix it by checking before dump.   
 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-20.03-LTS-SP1(4.19.90):受影响
2.openEuler-20.03-LTS-SP4(4.19.90):受影响
3.openEuler-22.03-LTS(5.10.0):受影响
4.openEuler-22.03-LTS-SP1(5.10.0):受影响
5.openEuler-22.03-LTS-SP2(5.10.0):受影响
6.openEuler-22.03-LTS-SP3(5.10.0):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

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2024-1501

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