CVE-2022-49010

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Source
https://cve.org/CVERecord?id=CVE-2022-49010
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49010.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2022-49010
Downstream
Related
Published
2024-10-21T20:06:21.423Z
Modified
2026-03-20T12:22:06.411290Z
Summary
hwmon: (coretemp) Check for null before removing sysfs attrs
Details

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

hwmon: (coretemp) Check for null before removing sysfs attrs

If coretempaddcore() gets an error then pdata->coredata[indx] is already NULL and has been kfreed. Don't pass that to sysfsremovegroup() as that will crash in sysfsremove_group().

[Shortened for readability] [91854.020159] sysfs: cannot create duplicate filename '/devices/platform/coretemp.0/hwmon/hwmon2/temp20label' <cpu offline> [91855.126115] BUG: kernel NULL pointer dereference, address: 0000000000000188 [91855.165103] #PF: supervisor read access in kernel mode [91855.194506] #PF: errorcode(0x0000) - not-present page [91855.224445] PGD 0 P4D 0 [91855.238508] Oops: 0000 [#1] PREEMPT SMP PTI ... [91855.342716] RIP: 0010:sysfsremovegroup+0xc/0x80 ... [91855.796571] Call Trace: [91855.810524] coretempcpuoffline+0x12b/0x1dd [coretemp] [91855.841738] ? coretempcpuonline+0x180/0x180 [coretemp] [91855.871107] cpuhpinvokecallback+0x105/0x4b0 [91855.893432] cpuhpthreadfun+0x8e/0x150 ...

Fix this by checking for NULL first.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49010.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
199e0de7f5df31a4fc485d4aaaf8a07718252ace
Fixed
fb503d077ff7b43913503eaf72995d1239028b99
Fixed
070d5ea4a0592a37ad96ce7f7b6b024f90bb009f
Fixed
280110db1a7d62ad635b103bafc3ae96e8bef75c
Fixed
89eecabe6a47403237f45aafd7d24f93cb973653
Fixed
f06e0cd01eab954bd5f2190c9faa79bb5357e05b
Fixed
7692700ac818866d138a8de555130a6e70e6ac16
Fixed
ae6c8b6e5d5628df1c475c0a8fca1465e205c95b
Fixed
a89ff5f5cc64b9fe7a992cf56988fd36f56ca82a

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49010.json"