CVE-2022-49010
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 199e0de7f5df31a4fc485d4aaaf8a07718252ace < fb503d077ff7b43913503eaf72995d1239028b99 | affected |
| Linux | Linux | 199e0de7f5df31a4fc485d4aaaf8a07718252ace < 070d5ea4a0592a37ad96ce7f7b6b024f90bb009f | affected |
| Linux | Linux | 199e0de7f5df31a4fc485d4aaaf8a07718252ace < 280110db1a7d62ad635b103bafc3ae96e8bef75c | affected |
| Linux | Linux | 199e0de7f5df31a4fc485d4aaaf8a07718252ace < 89eecabe6a47403237f45aafd7d24f93cb973653 | affected |
| Linux | Linux | 199e0de7f5df31a4fc485d4aaaf8a07718252ace < f06e0cd01eab954bd5f2190c9faa79bb5357e05b | affected |
| Linux | Linux | 199e0de7f5df31a4fc485d4aaaf8a07718252ace < 7692700ac818866d138a8de555130a6e70e6ac16 | affected |
| Linux | Linux | 199e0de7f5df31a4fc485d4aaaf8a07718252ace < ae6c8b6e5d5628df1c475c0a8fca1465e205c95b | affected |
| Linux | Linux | 199e0de7f5df31a4fc485d4aaaf8a07718252ace < a89ff5f5cc64b9fe7a992cf56988fd36f56ca82a | affected |
| Linux | Linux | 3.0 | affected |
| Linux | Linux | 0 < 3.0 | unaffected |
| Linux | Linux | 4.9.335 <= 4.9.* | unaffected |
| Linux | Linux | 4.14.301 <= 4.14.* | unaffected |
| Linux | Linux | 4.19.268 <= 4.19.* | unaffected |
| Linux | Linux | 5.4.226 <= 5.4.* | unaffected |
| Linux | Linux | 5.10.158 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.82 <= 5.15.* | unaffected |
| Linux | Linux | 6.0.12 <= 6.0.* | unaffected |
| Linux | Linux | 6.1 <= * | unaffected |
Weaknesses
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- https://git.kernel.org/stable/c/fb503d077ff7b43913503eaf72995d1239028b99
- https://git.kernel.org/stable/c/070d5ea4a0592a37ad96ce7f7b6b024f90bb009f
- https://git.kernel.org/stable/c/280110db1a7d62ad635b103bafc3ae96e8bef75c
- https://git.kernel.org/stable/c/89eecabe6a47403237f45aafd7d24f93cb973653
- https://git.kernel.org/stable/c/f06e0cd01eab954bd5f2190c9faa79bb5357e05b
- https://git.kernel.org/stable/c/7692700ac818866d138a8de555130a6e70e6ac16
- https://git.kernel.org/stable/c/ae6c8b6e5d5628df1c475c0a8fca1465e205c95b
- https://git.kernel.org/stable/c/a89ff5f5cc64b9fe7a992cf56988fd36f56ca82a
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