Answer in brief
CVE-2022-50322 records a Medium severity (CVSS 5.5) vulnerability in rtc: msc313: Fix function prototype mismatch in msc313_rtc_probe(). 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.
CVSS is 5.5. 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.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | 5.16 | Not reported |
| Linux/Linuxgeneric | >=be7d9c9161b9c76edeff15e79edc2f256568fe05 <5affaaf3334c9274131dae889ed79ea0553d61b4 || >=be7d9c9161b9c76edeff15e79edc2f256568fe05 <ba50fee6b41bcbafaeed3c51f90d37d1480ff9a0 || >=be7d9c9161b9c76edeff15e79edc2f256568fe05 <21b8a1dd56a163825e5749b303858fb902ebf198 | 5affaaf3334c9274131dae889ed79ea0553d61b4, ba50fee6b41bcbafaeed3c51f90d37d1480ff9a0, 21b8a1dd56a163825e5749b303858fb902ebf198 |
Published upstream
Sep 15, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 5, 2026
In the Linux kernel, the following vulnerability has been resolved: rtc: msc313: Fix function prototype mismatch in msc313_rtc_probe() With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG), indirect call targets are validated against the expected function pointer prototype to make sure the call target is valid to help mitigate ROP attacks. If they are not identical, there is a failure at run time, which manifests as either a kernel panic or thread getting killed. msc313_rtc_probe() was passing clk_disable_unprepare() directly, which did not have matching prototypes for devm_add_action_or_reset()'s callback argument. Refactor to use devm_clk_get_enabled() instead. This was found as a result of Clang's new -Wcast-function-type-strict flag, which is more sensitive than the simpler -Wcast-function-type, which only checks for type width mismatches.
Quoted source text, attributed separately from HOL analysis.