CVE-2026-89721phy: rockchip-samsung-dcphy: fix out-of-range max_register
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: phy: rockchip-samsung-dcphy: fix out-of-range max_register The PHY register block is 64KB, so with a register stride of 4 the last accessible register sits at offset 0xfffc. max_register names 0x10000, one register past the end of the mapping: dumping the registers through the regmap debugfs interface reads beyond the ioremapped region and oopses on the unmapped page. The oops fires with the regmap lock held, so later PHY operations deadlock.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b before 14afe18655c0951f4f85898f761bf92264e65ccd; from b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b before c1a62f9dcf531d56c56da2e4435386b6d264c69f; from b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b before 4486e75ba647bd8b98fc1f053101b40caceeed4b | CNA record |
References
- https://git.kernel.org/stable/c/14afe18655c0951f4f85898f761bf92264e65ccd
- https://git.kernel.org/stable/c/c1a62f9dcf531d56c56da2e4435386b6d264c69f
- https://git.kernel.org/stable/c/4486e75ba647bd8b98fc1f053101b40caceeed4b
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.