drm/panthor: validate userspace queue count against initialized firmware slot count
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.12.113, 6.18.57, 7.2.11
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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
- CVE published
- First seen by cve.now
Affected versions
- Linux Linux
From de85488138247d034eb3241840424a54d660926b · fixed in 4487cf79bf173f2b426a02d102076f8a20d23b96; From de85488138247d034eb3241840424a54d660926b · fixed in fdee3570b282a6c8699aea63fa5694355e010ec9; From de85488138247d034eb3241840424a54d660926b · fixed in 9be126be5f78bc331a930295af97c9b1f9158f06; From de85488138247d034eb3241840424a54d660926b · fixed in ec86c43dcfff68eab4db9bdafcd3e2b16e342e18
- Linux Linux
6.10
- KernelLinux
From 6.10.0 · fixed in 6.12.113; From 6.13.0 · fixed in 6.18.57; From 6.19.0 · fixed in 7.2.11