CVE-2025-39681
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2025
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
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. ]
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9 | affected | git | 62f12cde10118253348a7540e85606869bd69432 | Unavailable | None listed |
| 923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9 | affected | git | 873f32201df8876bdb2563e3187e79149427cab4 | Unavailable | None listed |
| 923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9 | affected | git | fb81222c1559f89bfe3aa1010f6d112531d55353 | Unavailable | None listed |
| 923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9 | affected | git | 7207923d8453ebfb35667c1736169f2dd796772e | Unavailable | None listed |
| 923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9 | affected | git | a9e5924daa954c9f585c1ca00358afe71d6781c4 | Unavailable | None listed |
| 923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9 | affected | git | d23264c257a70dbe021b43b3bc2ee16134cd2c69 | Unavailable | None listed |
| 923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9 | affected | git | d8df126349dad855cdfedd6bbf315bad2e901c2f | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.8 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.8 | Unavailable | None listed |
| 5.10.242 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.190 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.149 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.103 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.44 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.16.4 | unaffected | semver | Unavailable | 6.16.* | None listed |
| 6.17 | unaffected | original_commit_for_fix | Unavailable | * | None listed |