Answer in brief
CVE-2026-90178 records a Unknown severity vulnerability in hwmon: (coretemp) Fix core_data leak on CPUs without PTS. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1a793caf6f6991716cb07583ed7c27de84ef0cba <dc0d79b1be384e7f6a2308356afd10dcf3bf940f || >=1a793caf6f6991716cb07583ed7c27de84ef0cba <86c1617b7d4b001b20a71deda3c791538a4fa6aa || >=1a793caf6f6991716cb07583ed7c27de84ef0cba <9b23a010a1e8232974617c412cb9f578f3378b70 || >=1a793caf6f6991716cb07583ed7c27de84ef0cba <0cd8450c257faa0cece0e0c43d3b55d1a389acc7 | dc0d79b1be384e7f6a2308356afd10dcf3bf940f, 86c1617b7d4b001b20a71deda3c791538a4fa6aa, 9b23a010a1e8232974617c412cb9f578f3378b70, 0cd8450c257faa0cece0e0c43d3b55d1a389acc7 |
| Linux/Linuxgeneric | 6.9 | Not reported |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
In the Linux kernel, the following vulnerability has been resolved: hwmon: (coretemp) Fix core_data leak on CPUs without PTS pdata->core_data is allocated in init_temp_data() when the first core temp_data of a package is created, but it is only released from destroy_temp_data(), and only in the branch that handles the package temp_data. Package temp_data is created solely when the CPU supports X86_FEATURE_PTS. On a CPU without it, coretemp_cpu_online() never calls coretemp_add_core() with pkg_flag set, so pdata->pkg_data stays NULL. coretemp_cpu_offline() then skips the removal of the package interface, destroy_temp_data() is never called for package data, and the array is still allocated when coretemp_device_remove() frees the platform data that pointed at it. Release the array in coretemp_device_remove(). destroy_temp_data() sets pdata->core_data to NULL when it frees it, so the added kfree() is a no-op on CPUs that do have PTS. Tested on an Intel Core i5-1135G7. The driver was instrumented to log every allocation and release of pdata->core_data, and the PTS check in coretemp_cpu_online() was patched out to emulate a CPU without package thermal support. Without this change the array was allocated and never released, and coretemp_device_remove() still saw a non-NULL pointer. With it the array is released and the pointer accounting balances. On an unmodified build the release still happens via the package temp_data and the added kfree() sees NULL, with no slab warnings over repeated module load and unload cycles.
Quoted source text, attributed separately from HOL analysis.