CVE-2026-99003drm/panthor: validate userspace queue count against initialized firmware slot count
- —Not scoredno CVSS score yet
- 0.17%Exploitation in 30 daysEPSS · top 94% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 28 days later
· 28 days later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.17% · top 94% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected de85488138247d034eb3241840424a54d660926b – < 4487cf79bf173f2b426a02d102076f8a20d23b96
- affected de85488138247d034eb3241840424a54d660926b – < fdee3570b282a6c8699aea63fa5694355e010ec9
- affected de85488138247d034eb3241840424a54d660926b – < 9be126be5f78bc331a930295af97c9b1f9158f06
- affected de85488138247d034eb3241840424a54d660926b – < ec86c43dcfff68eab4db9bdafcd3e2b16e342e18
- affected 6.10
- unaffected < 6.10
- unaffected 6.12.113 – ≤ 6.12.*
- unaffected 6.18.57 – ≤ 6.18.*
- unaffected 7.2.11 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References4
- https://git.kernel.org/stable/c/4487cf79bf173f2b426a02d102076f8a20d23b96 (opens in a new tab)
- https://git.kernel.org/stable/c/fdee3570b282a6c8699aea63fa5694355e010ec9 (opens in a new tab)
- https://git.kernel.org/stable/c/9be126be5f78bc331a930295af97c9b1f9158f06 (opens in a new tab)
- https://git.kernel.org/stable/c/ec86c43dcfff68eab4db9bdafcd3e2b16e342e18 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-108797 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-99003)Record last updated .