Executive Summary

Informations
Name CVE-2022-48750 First vendor Publication 2024-06-20
Vendor Cve Last vendor Modification 2024-11-04

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 5.5
Base Score 5.5 Environmental Score 5.5
impact SubScore 3.6 Temporal Score 5.5
Exploitabality Sub Score 1.8
 
Attack Vector Local Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

In the Linux kernel, the following vulnerability has been resolved:

hwmon: (nct6775) Fix crash in clear_caseopen

Pawel Marciniak reports the following crash, observed when clearing the chassis intrusion alarm.

BUG: kernel NULL pointer dereference, address: 0000000000000028 PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP PTI CPU: 3 PID: 4815 Comm: bash Tainted: G S 5.16.2-200.fc35.x86_64 #1 Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./Z97 Extreme4, BIOS P2.60A 05/03/2018 RIP: 0010:clear_caseopen+0x5a/0x120 [nct6775] Code: 68 70 e8 e9 32 b1 e3 85 c0 0f 85 d2 00 00 00 48 83 7c 24 ... RSP: 0018:ffffabcb02803dd8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000000 RDX: ffff8e8808192880 RSI: 0000000000000000 RDI: ffff8e87c7509a68 RBP: 0000000000000000 R08: 0000000000000001 R09: 000000000000000a R10: 000000000000000a R11: f000000000000000 R12: 000000000000001f R13: ffff8e87c7509828 R14: ffff8e87c7509a68 R15: ffff8e88494527a0 FS: 00007f4db9151740(0000) GS:ffff8e8ebfec0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000028 CR3: 0000000166b66001 CR4: 00000000001706e0 Call Trace:

kernfs_fop_write_iter+0x11c/0x1b0
new_sync_write+0x10b/0x180
vfs_write+0x209/0x2a0
ksys_write+0x4f/0xc0
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x44/0xae

The problem is that the device passed to clear_caseopen() is the hwmon device, not the platform device, and the platform data is not set in the hwmon device. Store the pointer to sio_data in struct nct6775_data and get if from there if needed.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-48750

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-476 NULL Pointer Dereference

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 7
Os 3488

Sources (Detail)

https://git.kernel.org/stable/c/79da533d3cc717ccc05ddbd3190da8a72bc2408b
https://git.kernel.org/stable/c/cfb7d12f2e4a4d694f49e9b4ebb352f7b67cdfbb
Source Url

Alert History

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Date Informations
2024-11-21 21:23:10
  • Multiple Updates
2024-11-20 02:43:20
  • Multiple Updates
2024-11-14 02:43:12
  • Multiple Updates
2024-11-09 00:28:28
  • Multiple Updates
2024-11-04 17:27:50
  • Multiple Updates
2024-10-26 02:41:37
  • Multiple Updates
2024-10-25 02:43:22
  • Multiple Updates
2024-10-23 02:42:46
  • Multiple Updates
2024-10-03 02:38:50
  • Multiple Updates
2024-10-02 02:37:13
  • Multiple Updates
2024-09-18 21:27:52
  • Multiple Updates
2024-06-24 21:27:26
  • Multiple Updates
2024-06-20 17:27:35
  • First insertion