phy: rockchip-samsung-dcphy: fix out-of-range max_register
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.
CVE-2026-89721
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-89721
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b",
"lessThan": "14afe18655c0951f4f85898f761bf92264e65ccd",
"versionType": "git"
},
{
"status": "affected",
"version": "b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b",
"lessThan": "c1a62f9dcf531d56c56da2e4435386b6d264c69f",
"versionType": "git"
},
{
"status": "affected",
"version": "b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b",
"lessThan": "4486e75ba647bd8b98fc1f053101b40caceeed4b",
"versionType": "git"
}
],
"programFiles": [
"drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.15"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.15",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.18.50",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.4",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-89721
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #35198 · Revision 1
- Added to Heist Feed
- Publisher date