x86/cpu/hygon: Add missing resctrl_cpu_detect() in bsp_init helper
In the Linux kernel, the following vulnerability has been resolved: x86/cpu/hygon: Add missing resctrl_cpu_detect() in bsp_init helper Since 923f3a2b48bd ("x86/resctrl: Query LLC monitoring properties once during boot") resctrl_cpu_detect() has been moved from common CPU initialization code to the vendor-specific BSP init helper, while Hygon didn't put that call in their code. This triggers a division by zero fault during early booting stage on our machines with X86_FEATURE_CQM* supported, where get_rdt_mon_resources() tries to calculate mon_l3_config with uninitialized boot_cpu_data.x86_cache_occ_scale. Add the missing resctrl_cpu_detect() in the Hygon BSP init helper. [ bp: Massage commit message. ]
CVE-2025-39681
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-2025-39681
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": "923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9",
"lessThan": "62f12cde10118253348a7540e85606869bd69432",
"versionType": "git"
},
{
"status": "affected",
"version": "923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9",
"lessThan": "873f32201df8876bdb2563e3187e79149427cab4",
"versionType": "git"
},
{
"status": "affected",
"version": "923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9",
"lessThan": "fb81222c1559f89bfe3aa1010f6d112531d55353",
"versionType": "git"
},
{
"status": "affected",
"version": "923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9",
"lessThan": "7207923d8453ebfb35667c1736169f2dd796772e",
"versionType": "git"
},
{
"status": "affected",
"version": "923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9",
"lessThan": "a9e5924daa954c9f585c1ca00358afe71d6781c4",
"versionType": "git"
},
{
"status": "affected",
"version": "923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9",
"lessThan": "d23264c257a70dbe021b43b3bc2ee16134cd2c69",
"versionType": "git"
},
{
"status": "affected",
"version": "923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9",
"lessThan": "d8df126349dad855cdfedd6bbf315bad2e901c2f",
"versionType": "git"
}
],
"programFiles": [
"arch/x86/kernel/cpu/hygon.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.8"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.8",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.242",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.190",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.149",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.103",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.44",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.16.4",
"versionType": "semver",
"lessThanOrEqual": "6.16.*"
},
{
"status": "unaffected",
"version": "6.17",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"arch/x86/kernel/cpu/hygon.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-39681
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #27057 · Revision 1
- Added to Heist Feed
- Publisher date