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

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.

Scores

EPSS (exploitation in 30 days)

0.24% · top 85% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.

Weakness

• CWE-476 (opens in a new tab)All about CWE-476 and its CVEs

Affected products

• Linux · Linux

  • affected 199e0de7f5df31a4fc485d4aaaf8a07718252ace – < fb503d077ff7b43913503eaf72995d1239028b99
  • affected 199e0de7f5df31a4fc485d4aaaf8a07718252ace – < 070d5ea4a0592a37ad96ce7f7b6b024f90bb009f
  • affected 199e0de7f5df31a4fc485d4aaaf8a07718252ace – < 280110db1a7d62ad635b103bafc3ae96e8bef75c
  • affected 199e0de7f5df31a4fc485d4aaaf8a07718252ace – < 89eecabe6a47403237f45aafd7d24f93cb973653
  • affected 199e0de7f5df31a4fc485d4aaaf8a07718252ace – < f06e0cd01eab954bd5f2190c9faa79bb5357e05b
  • affected 199e0de7f5df31a4fc485d4aaaf8a07718252ace – < 7692700ac818866d138a8de555130a6e70e6ac16
  • affected 199e0de7f5df31a4fc485d4aaaf8a07718252ace – < ae6c8b6e5d5628df1c475c0a8fca1465e205c95b
  • affected 199e0de7f5df31a4fc485d4aaaf8a07718252ace – < a89ff5f5cc64b9fe7a992cf56988fd36f56ca82a

• Linux · Linux

  • affected 3.0
  • unaffected < 3.0
  • unaffected 4.9.335 – ≤ 4.9.*
  • unaffected 4.14.301 – ≤ 4.14.*
  • unaffected 4.19.268 – ≤ 4.19.*
  • unaffected 5.4.226 – ≤ 5.4.*
  • unaffected 5.10.158 – ≤ 5.10.*
  • unaffected 5.15.82 – ≤ 5.15.*
  • unaffected 6.0.12 – ≤ 6.0.*
  • unaffected 6.1 – ≤ *

References (8)

• https://git.kernel.org/stable/c/fb503d077ff7b43913503eaf72995d1239028b99 (opens in a new tab)
• https://git.kernel.org/stable/c/070d5ea4a0592a37ad96ce7f7b6b024f90bb009f (opens in a new tab)
• https://git.kernel.org/stable/c/280110db1a7d62ad635b103bafc3ae96e8bef75c (opens in a new tab)
• https://git.kernel.org/stable/c/89eecabe6a47403237f45aafd7d24f93cb973653 (opens in a new tab)
• https://git.kernel.org/stable/c/f06e0cd01eab954bd5f2190c9faa79bb5357e05b (opens in a new tab)
• https://git.kernel.org/stable/c/7692700ac818866d138a8de555130a6e70e6ac16 (opens in a new tab)
• https://git.kernel.org/stable/c/ae6c8b6e5d5628df1c475c0a8fca1465e205c95b (opens in a new tab)
• https://git.kernel.org/stable/c/a89ff5f5cc64b9fe7a992cf56988fd36f56ca82a (opens in a new tab)

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2022-49010](https://trackcve.app/badge/CVE-2022-49010.svg)](https://trackcve.app/cve/CVE-2022-49010)

Record last updated 11 May 2026, 18:51 UTC.