CVE-2026-72007 pmdomain: imx: Fix i.MX8MP VC8000E power up sequence
A timing issue in the i.MX8MP VC8000E power-up sequence can cause a system hang, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-72007?
CVE-2026-72007 is a denial of service vulnerability in Linux, published on 15 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
pmdomain: imx: Fix i.MX8MP VC8000E power up sequence
Per errata[1]: ERR050531: VPU_NOC power down handshake may hang during VC8000E/VPUMIX power up/down cycling. Description: VC8000E reset de-assertion edge and AXI clock may have a timing issue. Workaround: Set bit2 (vc8000e_clk_en) of BLK_CLK_EN_CSR to 0 to gate off both AXI clock and VC8000E clock sent to VC8000E and AXI clock sent to VPU_NOC m_v_2 interface during VC8000E power up(VC8000E reset is de-asserted by HW)
Add a bool variable is_errata_err050531 in 'struct imx8m_blk_ctrl_domain_data' to represent whether the workaround is needed. If is_errata_err050531 is true, first clear the clk before powering up gpc, then enable the clk after powering up gpc.
[1] https://www.nxp.com/webapp/Download?colCode=IMX8MP_1P33A
Which versions are affected by CVE-2026-72007?
How do I fix CVE-2026-72007?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-72007 being exploited?
There is no known exploitation of CVE-2026-72007 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-72007, DEBIAN-CVE-2026-72007, GHSA-4c88-c5vh-m8mh, UBUNTU-CVE-2026-72007.