CVE-2022-49010
"Linux Coretemp sysfs NULL Pointer Dereference"
Description
In the Linux kernel, the following vulnerability has been resolved: hwmon: (coretemp) Check for null before removing sysfs attrs If coretemp_add_core() gets an error then pdata->core_data[indx] is already NULL and has been kfreed. Don't pass that to sysfs_remove_group() as that will crash in sysfs_remove_group(). [Shortened for readability] [91854.020159] sysfs: cannot create duplicate filename '/devices/platform/coretemp.0/hwmon/hwmon2/temp20_label' <cpu offline> [91855.126115] BUG: kernel NULL pointer dereference, address: 0000000000000188 [91855.165103] #PF: supervisor read access in kernel mode [91855.194506] #PF: error_code(0x0000) - not-present page [91855.224445] PGD 0 P4D 0 [91855.238508] Oops: 0000 [#1] PREEMPT SMP PTI ... [91855.342716] RIP: 0010:sysfs_remove_group+0xc/0x80 ... [91855.796571] Call Trace: [91855.810524] coretemp_cpu_offline+0x12b/0x1dd [coretemp] [91855.841738] ? coretemp_cpu_online+0x180/0x180 [coretemp] [91855.871107] cpuhp_invoke_callback+0x105/0x4b0 [91855.893432] cpuhp_thread_fun+0x8e/0x150 ... Fix this by checking for NULL first.
INFO
Published Date :
Oct. 21, 2024, 8:15 p.m.
Last Modified :
Oct. 24, 2024, 7:03 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-49010.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-49010 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-49010 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Oct. 24, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://git.kernel.org/stable/c/070d5ea4a0592a37ad96ce7f7b6b024f90bb009f No Types Assigned https://git.kernel.org/stable/c/070d5ea4a0592a37ad96ce7f7b6b024f90bb009f Patch Changed Reference Type https://git.kernel.org/stable/c/280110db1a7d62ad635b103bafc3ae96e8bef75c No Types Assigned https://git.kernel.org/stable/c/280110db1a7d62ad635b103bafc3ae96e8bef75c Patch Changed Reference Type https://git.kernel.org/stable/c/7692700ac818866d138a8de555130a6e70e6ac16 No Types Assigned https://git.kernel.org/stable/c/7692700ac818866d138a8de555130a6e70e6ac16 Patch Changed Reference Type https://git.kernel.org/stable/c/89eecabe6a47403237f45aafd7d24f93cb973653 No Types Assigned https://git.kernel.org/stable/c/89eecabe6a47403237f45aafd7d24f93cb973653 Patch Changed Reference Type https://git.kernel.org/stable/c/a89ff5f5cc64b9fe7a992cf56988fd36f56ca82a No Types Assigned https://git.kernel.org/stable/c/a89ff5f5cc64b9fe7a992cf56988fd36f56ca82a Patch Changed Reference Type https://git.kernel.org/stable/c/ae6c8b6e5d5628df1c475c0a8fca1465e205c95b No Types Assigned https://git.kernel.org/stable/c/ae6c8b6e5d5628df1c475c0a8fca1465e205c95b Patch Changed Reference Type https://git.kernel.org/stable/c/f06e0cd01eab954bd5f2190c9faa79bb5357e05b No Types Assigned https://git.kernel.org/stable/c/f06e0cd01eab954bd5f2190c9faa79bb5357e05b Patch Changed Reference Type https://git.kernel.org/stable/c/fb503d077ff7b43913503eaf72995d1239028b99 No Types Assigned https://git.kernel.org/stable/c/fb503d077ff7b43913503eaf72995d1239028b99 Patch Added CWE NIST CWE-476 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.0 up to (excluding) 4.9.335 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 up to (excluding) 4.14.301 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.268 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.226 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.158 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.82 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.0.12 *cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.1:rc6:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.1:rc7:*:*:*:*:*:* -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 21, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: hwmon: (coretemp) Check for null before removing sysfs attrs If coretemp_add_core() gets an error then pdata->core_data[indx] is already NULL and has been kfreed. Don't pass that to sysfs_remove_group() as that will crash in sysfs_remove_group(). [Shortened for readability] [91854.020159] sysfs: cannot create duplicate filename '/devices/platform/coretemp.0/hwmon/hwmon2/temp20_label' <cpu offline> [91855.126115] BUG: kernel NULL pointer dereference, address: 0000000000000188 [91855.165103] #PF: supervisor read access in kernel mode [91855.194506] #PF: error_code(0x0000) - not-present page [91855.224445] PGD 0 P4D 0 [91855.238508] Oops: 0000 [#1] PREEMPT SMP PTI ... [91855.342716] RIP: 0010:sysfs_remove_group+0xc/0x80 ... [91855.796571] Call Trace: [91855.810524] coretemp_cpu_offline+0x12b/0x1dd [coretemp] [91855.841738] ? coretemp_cpu_online+0x180/0x180 [coretemp] [91855.871107] cpuhp_invoke_callback+0x105/0x4b0 [91855.893432] cpuhp_thread_fun+0x8e/0x150 ... Fix this by checking for NULL first. Added Reference kernel.org https://git.kernel.org/stable/c/fb503d077ff7b43913503eaf72995d1239028b99 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/070d5ea4a0592a37ad96ce7f7b6b024f90bb009f [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/280110db1a7d62ad635b103bafc3ae96e8bef75c [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/89eecabe6a47403237f45aafd7d24f93cb973653 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/f06e0cd01eab954bd5f2190c9faa79bb5357e05b [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/7692700ac818866d138a8de555130a6e70e6ac16 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/ae6c8b6e5d5628df1c475c0a8fca1465e205c95b [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/a89ff5f5cc64b9fe7a992cf56988fd36f56ca82a [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-49010 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-49010
weaknesses.