Answer in brief
CVE-2026-99003 records a Unknown severity vulnerability in drm/panthor: validate userspace queue count against initialized firmware slot count. 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 | >=de85488138247d034eb3241840424a54d660926b <4487cf79bf173f2b426a02d102076f8a20d23b96 || >=de85488138247d034eb3241840424a54d660926b <fdee3570b282a6c8699aea63fa5694355e010ec9 || >=de85488138247d034eb3241840424a54d660926b <9be126be5f78bc331a930295af97c9b1f9158f06 || >=de85488138247d034eb3241840424a54d660926b <ec86c43dcfff68eab4db9bdafcd3e2b16e342e18 | 4487cf79bf173f2b426a02d102076f8a20d23b96, fdee3570b282a6c8699aea63fa5694355e010ec9, 9be126be5f78bc331a930295af97c9b1f9158f06, ec86c43dcfff68eab4db9bdafcd3e2b16e342e18 |
| Linux/Linuxgeneric | 6.10 | Not reported |
Published upstream
Oct 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 23, 2026
In the Linux kernel, the following vulnerability has been resolved: drm/panthor: validate userspace queue count against initialized firmware slot count In panthor_drv.c:panthor_ioctl_group_create(), the queue count is validated against the hardcoded maximum: if (!args->queues.count || args->queues.count > MAX_CS_PER_CSG) return -EINVAL; However, if the firmware reports fewer slots than MAX_CS_PER_CSG, panthor_fw_init_ifaces() will only initialize that smaller number of stream interfaces. If unprivileged userspace requests more queues than the firmware reported (but no more than MAX_CS_PER_CSG), cs_slot_prog_locked() fetches an uninitialized stream interface and may crash when dereferencing cs_iface->input->ringbuf_base.
Quoted source text, attributed separately from HOL analysis.