CVE-2024-50255

一、漏洞信息
 漏洞编号：[CVE-2024-50255](https://nvd.nist.gov/vuln/detail/CVE-2024-50255)
 漏洞归属组件：[kernel](https://gitee.com/src-openeuler/kernel)
 漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.19,6.1.8,6.4.0,6.6.0
 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:Bluetooth: hci: fix null-ptr-deref in hci_read_supported_codecsFix __hci_cmd_sync_sk() to return not NULL for unknown opcodes.__hci_cmd_sync_sk() returns NULL if a command returns a status event.However, it also returns NULL where an opcode doesn t exist in thehci_cc table because hci_cmd_complete_evt() assumes status = skb->data[0]for unknown opcodes.This leads to null-ptr-deref in cmd_sync for HCI_OP_READ_LOCAL_CODECS asthere is no hci_cc for HCI_OP_READ_LOCAL_CODECS, which always assumesstatus = skb->data[0].KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077]CPU: 1 PID: 2000 Comm: kworker/u9:5 Not tainted 6.9.0-ga6bcb805883c-dirty #10Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014Workqueue: hci7 hci_power_onRIP: 0010:hci_read_supported_codecs+0xb9/0x870 net/bluetooth/hci_codec.c:138Code: 08 48 89 ef e8 b8 c1 8f fd 48 8b 75 00 e9 96 00 00 00 49 89 c6 48 ba 00 00 00 00 00 fc ff df 4c 8d 60 70 4c 89 e3 48 c1 eb 03 <0f> b6 04 13 84 c0 0f 85 82 06 00 00 41 83 3c 24 02 77 0a e8 bf 78RSP: 0018:ffff888120bafac8 EFLAGS: 00010212RAX: 0000000000000000 RBX: 000000000000000e RCX: ffff8881173f0040RDX: dffffc0000000000 RSI: ffffffffa58496c0 RDI: ffff88810b9ad1e4RBP: ffff88810b9ac000 R08: ffffffffa77882a7 R09: 1ffffffff4ef1054R10: dffffc0000000000 R11: fffffbfff4ef1055 R12: 0000000000000070R13: 0000000000000000 R14: 0000000000000000 R15: ffff88810b9ac000FS:  0000000000000000(0000) GS:ffff8881f6c00000(0000) knlGS:0000000000000000CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033CR2: 00007f6ddaa3439e CR3: 0000000139764003 CR4: 0000000000770ef0PKRU: 55555554Call Trace: <TASK> hci_read_local_codecs_sync net/bluetooth/hci_sync.c:4546 [inline] hci_init_stage_sync net/bluetooth/hci_sync.c:3441 [inline] hci_init4_sync net/bluetooth/hci_sync.c:4706 [inline] hci_init_sync net/bluetooth/hci_sync.c:4742 [inline] hci_dev_init_sync net/bluetooth/hci_sync.c:4912 [inline] hci_dev_open_sync+0x19a9/0x2d30 net/bluetooth/hci_sync.c:4994 hci_dev_do_open net/bluetooth/hci_core.c:483 [inline] hci_power_on+0x11e/0x560 net/bluetooth/hci_core.c:1015 process_one_work kernel/workqueue.c:3267 [inline] process_scheduled_works+0x8ef/0x14f0 kernel/workqueue.c:3348 worker_thread+0x91f/0xe50 kernel/workqueue.c:3429 kthread+0x2cb/0x360 kernel/kthread.c:388 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 漏洞公开时间：2024-11-09 19:15:11
 漏洞创建时间：2024-11-09 19:35:19
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2024-50255
<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/1e67d8641813f1876a42eeb4f532487b8a7fb0a8 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/1f1764466c33a4466363b821a25cd65c46a5a793 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/48d7c24b7ef6417c68f206566364db1f8087bb23 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/5d9054b9f769a8e124c4fa02072437c864726baf |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-50255 | https://bugzilla.suse.com/show_bug.cgi?id=1233238 |
| suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-50255.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1233238 |
| suse_bugzilla | https://git.kernel.org/stable/c/5d9054b9f769a8e124c4fa02072437c864726baf | https://bugzilla.suse.com/show_bug.cgi?id=1233238 |
| suse_bugzilla | https://git.kernel.org/stable/c/1f1764466c33a4466363b821a25cd65c46a5a793 | https://bugzilla.suse.com/show_bug.cgi?id=1233238 |
| suse_bugzilla | https://git.kernel.org/stable/c/48d7c24b7ef6417c68f206566364db1f8087bb23 | https://bugzilla.suse.com/show_bug.cgi?id=1233238 |
| suse_bugzilla | https://git.kernel.org/stable/c/1e67d8641813f1876a42eeb4f532487b8a7fb0a8 | https://bugzilla.suse.com/show_bug.cgi?id=1233238 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2024-50255 | https://bugzilla.suse.com/show_bug.cgi?id=1233238 |
| redhat_bugzilla | https://lore.kernel.org/linux-cve-announce/2024110938-CVE-2024-50255-3a3e@gregkh/T | https://bugzilla.redhat.com/show_bug.cgi?id=2324867 |
| redhat_bugzilla | https://access.redhat.com/errata/RHSA-2024:11486 | https://bugzilla.redhat.com/show_bug.cgi?id=2324867 |
| debian |  | https://security-tracker.debian.org/tracker/CVE-2024-50255 |
| mageia |  | http://advisories.mageia.org/MGASA-2024-0368.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/1e67d8641813f1876a42eeb4f532487b8a7fb0a8 |  | nvd |
|  |  | https://git.kernel.org/stable/c/1f1764466c33a4466363b821a25cd65c46a5a793 |  | nvd |
|  |  | https://git.kernel.org/stable/c/48d7c24b7ef6417c68f206566364db1f8087bb23 |  | nvd |
|  |  | https://git.kernel.org/stable/c/5d9054b9f769a8e124c4fa02072437c864726baf |  | nvd |
| linux_kernel | 6.1.116 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=5d9054b9f769Issue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=abfeea476c68 | linuxkernelcves |
| linux_kernel | 6.6.60 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1f1764466c33Issue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=abfeea476c68 | linuxkernelcves |
| linux_kernel | 6.11.7 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=48d7c24b7ef6Issue | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=abfeea476c68 | linuxkernelcves |
| linux_kernel | 6.12-rc6 | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1e67d8641813Please | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=abfeea476c68 | linuxkernelcves |

</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:Bluetooth: hci: fix null-ptr-deref in hci_read_supported_codecsFix __hci_cmd_sync_sk() to return not NULL for unknown opcodes.__hci_cmd_sync_sk() returns NULL if a command returns a status event.However, it also returns NULL where an opcode doesn t exist in thehci_cc table because hci_cmd_complete_evt() assumes status = skb->data[0]for unknown opcodes.This leads to null-ptr-deref in cmd_sync for HCI_OP_READ_LOCAL_CODECS asthere is no hci_cc for HCI_OP_READ_LOCAL_CODECS, which always assumesstatus = skb->data[0].KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077]CPU: 1 PID: 2000 Comm: kworker/u9:5 Not tainted 6.9.0-ga6bcb805883c-dirty #10Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014Workqueue: hci7 hci_power_onRIP: 0010:hci_read_supported_codecs+0xb9/0x870 net/bluetooth/hci_codec.c:138Code: 08 48 89 ef e8 b8 c1 8f fd 48 8b 75 00 e9 96 00 00 00 49 89 c6 48 ba 00 00 00 00 00 fc ff df 4c 8d 60 70 4c 89 e3 48 c1 eb 03 <0f> b6 04 13 84 c0 0f 85 82 06 00 00 41 83 3c 24 02 77 0a e8 bf 78RSP: 0018:ffff888120bafac8 EFLAGS: 00010212RAX: 0000000000000000 RBX: 000000000000000e RCX: ffff8881173f0040RDX: dffffc0000000000 RSI: ffffffffa58496c0 RDI: ffff88810b9ad1e4RBP: ffff88810b9ac000 R08: ffffffffa77882a7 R09: 1ffffffff4ef1054R10: dffffc0000000000 R11: fffffbfff4ef1055 R12: 0000000000000070R13: 0000000000000000 R14: 0000000000000000 R15: ffff88810b9ac000FS:  0000000000000000(0000) GS:ffff8881f6c00000(0000) knlGS:0000000000000000CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033CR2: 00007f6ddaa3439e CR3: 0000000139764003 CR4: 0000000000770ef0PKRU: 55555554Call Trace: <TASK> hci_read_local_codecs_sync net/bluetooth/hci_sync.c:4546 [inline] hci_init_stage_sync net/bluetooth/hci_sync.c:3441 [inline] hci_init4_sync net/bluetooth/hci_sync.c:4706 [inline] hci_init_sync net/bluetooth/hci_sync.c:4742 [inline] hci_dev_init_sync net/bluetooth/hci_sync.c:4912 [inline] hci_dev_open_sync+0x19a9/0x2d30 net/bluetooth/hci_sync.c:4994 hci_dev_do_open net/bluetooth/hci_core.c:483 [inline] hci_power_on+0x11e/0x560 net/bluetooth/hci_core.c:1015 process_one_work kernel/workqueue.c:3267 [inline] process_scheduled_works+0x8ef/0x14f0 kernel/workqueue.c:3348 worker_thread+0x91f/0xe50 kernel/workqueue.c:3429 kthread+0x2cb/0x360 kernel/kthread.c:388 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 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-24.03-LTS-SP1(6.6.0):受影响
3.openEuler-20.03-LTS-SP4(4.19.90):不受影响
4.openEuler-22.03-LTS-SP3(5.10.0):不受影响
5.openEuler-22.03-LTS-SP4(5.10.0):不受影响
6.master(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(6.6.0):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.openEuler-24.03-LTS-SP1(6.6.0):正常修复
3.master(6.6.0):不受影响-漏洞代码不能被攻击者触发
4.openEuler-24.03-LTS-Next(6.6.0):不受影响-漏洞代码不能被攻击者触发
5.openEuler-20.03-LTS-SP4(4.19.90):不受影响-漏洞代码不存在
6.openEuler-22.03-LTS-SP3(5.10.0):不受影响-漏洞代码不存在
7.openEuler-22.03-LTS-SP4(5.10.0):不受影响-漏洞代码不存在

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2024-2492

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