CVE-2022-49010

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

MEDIUM

5.5

CVSS Score

Published: October 21, 2024 at 08:06 PM UTC

Updated: June 17, 2026 at 05:16 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

3.0 ≤ v < 4.14.3013.0 ≤ v < 4.19.2683.0 ≤ v < 4.9.3353.0 ≤ v < 5.10.1583.0 ≤ v < 5.15.823.0 ≤ v < 5.4.2263.0 ≤ v < 6.0.123.0 ≤ v < 6.14.10 ≤ v < 4.14.3014.15 ≤ v < 4.19.2684.20 ≤ v < 5.4.2265.11 ≤ v < 5.15.825.16 ≤ v < 6.0.125.5 ≤ v < 5.10.158199e0de7f5df31a4fc485d4aaaf8a07718252ace6.1 rc1 6.1 rc2 6.1 rc3 6.1 rc4 6.1 rc5 6.1 rc6 6.1 rc7

Vendor states this is fixed in 070d5ea4a0592a37ad96ce7f7b6b024f90bb009f (fixed)

Vendor states this is fixed in 280110db1a7d62ad635b103bafc3ae96e8bef75c (fixed)

Vendor states this is fixed in 7692700ac818866d138a8de555130a6e70e6ac16 (fixed)

Vendor states this is fixed in 89eecabe6a47403237f45aafd7d24f93cb973653 (fixed)

Vendor states this is fixed in a89ff5f5cc64b9fe7a992cf56988fd36f56ca82a (fixed)

Vendor states this is fixed in ae6c8b6e5d5628df1c475c0a8fca1465e205c95b (fixed)

Vendor states this is fixed in f06e0cd01eab954bd5f2190c9faa79bb5357e05b (fixed)

Vendor states this is fixed in fb503d077ff7b43913503eaf72995d1239028b99 (fixed)

Vendor states this is fixed in 3.0 (unaffected)

Vendor states this is fixed in 4.14.301 (unaffected)

Vendor states this is fixed in 4.19.268 (unaffected)

Vendor states this is fixed in 4.9.335 (unaffected)