Answer in brief
CVE-2026-80953 records a High severity (CVSS 8.4) vulnerability in i3c: master: adi: initialize the lock before enabling interrupts. 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 8.4. 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 | >=a79ac2cdc91d6be3010f2e9a3b2a2ccfc26e2086 <a15a1b95de980362c14f32f519b293b0d12ce86f || >=a79ac2cdc91d6be3010f2e9a3b2a2ccfc26e2086 <de8c32b0a246bbb4b44ec29e12769496a0bf66f7 || >=a79ac2cdc91d6be3010f2e9a3b2a2ccfc26e2086 <8a53f9102a0d3eeb8784999f925028acf339c276 | a15a1b95de980362c14f32f519b293b0d12ce86f, de8c32b0a246bbb4b44ec29e12769496a0bf66f7, 8a53f9102a0d3eeb8784999f925028acf339c276 |
| Linux/Linuxgeneric | 6.18 | Not reported |
Published upstream
Sep 11, 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 11, 2026
In the Linux kernel, the following vulnerability has been resolved: i3c: master: adi: initialize the lock before enabling interrupts adi_i3c_master_probe() requests the IRQ and unmasks REG_IRQ_PENDING_CMDR before the controller's IBI state, transfer queue list and transfer queue lock are initialized. A pending CMDR interrupt can therefore run adi_i3c_master_irq() and take master->xferqueue.lock before the dynamic lock has been initialized. This issue was found by our static analysis tool and then manually reviewed against the current tree. The grounded PoC kept the probe ordering and the IRQ path adi_i3c_master_probe() -> adi_i3c_master_irq() -> xferqueue.lock, with a pending CMDR interrupt arriving after REG_IRQ_PENDING_CMDR is unmasked. Lockdep reported: INFO: trying to register non-static key. you didn't initialize this object before use? lock_acquire+0xbb/0x290 _raw_spin_lock_irqsave+0x36/0x60 adi_i3c_master_irq+0x32/0x56 [vuln_msv] adi_i3c_master_probe+0x5a/0xf47 [vuln_msv] Initialize the transfer queue and IBI state before requesting and unmasking the IRQ.
Quoted source text, attributed separately from HOL analysis.