Answer in brief
CVE-2026-43432 records a Unknown severity vulnerability in usb: xhci: Fix memory leak in xhci_disable_slot(). 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 | >=fee8be5bde562d4f5f9a100ca80c6d7072ed34c8 <1e800e26d54ccf2ddf2ea6d6cbe021c804d8aa62 || >=02d5a2a48bb44e7404b794df87e57588b2fd604e <6288baf0c8c4dcfbf206773aede9c1f2269cec28 || >=7faac1953ed1f658f719cdf7bb7303fa5eef822c <46aea90763832cd6e9b0c2e1c00e6a9512156d4b || >=7faac1953ed1f658f719cdf7bb7303fa5eef822c <2e2baa8fb5aa4d080cbfeb84c51eff797529f413 || >=7faac1953ed1f658f719cdf7bb7303fa5eef822c <807e4fb5140c73eb5dba1e399a990db5c1f3cdf8 || >=7faac1953ed1f658f719cdf7bb7303fa5eef822c <c65f1b840ab8ce72ba68f1b63bab7960f8fdfa89 || >=7faac1953ed1f658f719cdf7bb7303fa5eef822c <078b446efc0f5e496c31bccb72b98af979963a83 || >=7faac1953ed1f658f719cdf7bb7303fa5eef822c <c1c8550e70401159184130a1afc6261db01fc0ce || cc7c2818c71ebace207df40cc586c8c74e3d1a59 || ec0cddcc2454ab08193beb473978f8f8889b7e24 || >=5.10.85 <5.10.253 || >=5.15.8 <5.15.203 || >=4.19.221 <4.20 || >=5.4.165 <5.5 | 1e800e26d54ccf2ddf2ea6d6cbe021c804d8aa62, 6288baf0c8c4dcfbf206773aede9c1f2269cec28, 46aea90763832cd6e9b0c2e1c00e6a9512156d4b, 2e2baa8fb5aa4d080cbfeb84c51eff797529f413, 807e4fb5140c73eb5dba1e399a990db5c1f3cdf8, c65f1b840ab8ce72ba68f1b63bab7960f8fdfa89, 078b446efc0f5e496c31bccb72b98af979963a83, c1c8550e70401159184130a1afc6261db01fc0ce, 5.10.253, 5.15.203, 4.20, 5.5 |
| Linux/Linuxgeneric | 5.16 | Not reported |
Published upstream
May 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 6, 2026
In the Linux kernel, the following vulnerability has been resolved: usb: xhci: Fix memory leak in xhci_disable_slot() xhci_alloc_command() allocates a command structure and, when the second argument is true, also allocates a completion structure. Currently, the error handling path in xhci_disable_slot() only frees the command structure using kfree(), causing the completion structure to leak. Use xhci_free_command() instead of kfree(). xhci_free_command() correctly frees both the command structure and the associated completion structure. Since the command structure is allocated with zero-initialization, command->in_ctx is NULL and will not be erroneously freed by xhci_free_command(). This bug was found using an experimental static analysis tool we are developing. The tool is based on the LLVM framework and is specifically designed to detect memory management issues. It is currently under active development and not yet publicly available, but we plan to open-source it after our research is published. The bug was originally detected on v6.13-rc1 using our static analysis tool, and we have verified that the issue persists in the latest mainline kernel. We performed build testing on x86_64 with allyesconfig using GCC=11.4.0. Since triggering these error paths in xhci_disable_slot() requires specific hardware conditions or abnormal state, we were unable to construct a test case to reliably trigger these specific error paths at runtime.
Quoted source text, attributed separately from HOL analysis.