CVE-2022-49010: hwmon: (coretemp) Check for null before removing sysfs attrs
Vulnerability summary
CVE-2022-49010 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.6% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 11 · Related 9Timeline
- 21-10-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.24%
Chance of exploitation in the next 30 days
Percentile
15%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.24% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu113 products
- linuxAll versions (No fix recorded) | < 4.15.0-206.217 | < 5.4.0-144.161 | < 5.15.0-67.74
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 4.15.0-1151.164 | < 5.4.0-1097.105 | < 5.15.0-1031.35
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 199e0de7f5df31a4fc485d4aaaf8a07718252ace, < fb503d077ff7b43913503eaf72995d1239028b99 | ≥ 199e0de7f5df31a4fc485d4aaaf8a07718252ace, < 070d5ea4a0592a37ad96ce7f7b6b024f90bb009f | ≥ 199e0de7f5df31a4fc485d4aaaf8a07718252ace, < 280110db1a7d62ad635b103bafc3ae96e8bef75c | ≥ 199e0de7f5df31a4fc485d4aaaf8a07718252ace, < 89eecabe6a47403237f45aafd7d24f93cb973653 | ≥ 199e0de7f5df31a4fc485d4aaaf8a07718252ace, < f06e0cd01eab954bd5f2190c9faa79bb5357e05b | ≥ 199e0de7f5df31a4fc485d4aaaf8a07718252ace, < 7692700ac818866d138a8de555130a6e70e6ac16 | ≥ 199e0de7f5df31a4fc485d4aaaf8a07718252ace, < ae6c8b6e5d5628df1c475c0a8fca1465e205c95b | ≥ 199e0de7f5df31a4fc485d4aaaf8a07718252ace, < a89ff5f5cc64b9fe7a992cf56988fd36f56ca82a | 3.0
- linux_kernel≥ 3.0, < 4.9.335 | ≥ 4.10, < 4.14.301 | ≥ 4.15, < 4.19.268 | ≥ 4.20, < 5.4.226 | ≥ 5.5, < 5.10.158 | ≥ 5.11, < 5.15.82 | ≥ 5.16, < 6.0.12 | 6.1:rc1 | 6.1:rc2 | 6.1:rc3 | 6.1:rc4 | 6.1:rc5 | 6.1:rc6 | 6.1:rc7
Debian1 product
- linux< 6.0.12-1
3 vendors · 116 products
