CVE-2026-99003None▾ SunlitIn 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…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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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.
Linux >= de85488138247d034eb3241840424a54d660926b < 4487cf79bf173f2b426a02d102076f8a20d23b96Linux >= de85488138247d034eb3241840424a54d660926b < fdee3570b282a6c8699aea63fa5694355e010ec9Linux >= de85488138247d034eb3241840424a54d660926b < 9be126be5f78bc331a930295af97c9b1f9158f06Linux >= de85488138247d034eb3241840424a54d660926b < ec86c43dcfff68eab4db9bdafcd3e2b16e342e18Linux 6.10Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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