Description (CNA)
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. ]
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9 before 62f12cde10118253348a7540e85606869bd69432; affected 923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9 before 873f32201df8876bdb2563e3187e79149427cab4; affected 923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9 before fb81222c1559f89bfe3aa1010f6d112531d55353; affected 923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9 before 7207923d8453ebfb35667c1736169f2dd796772e; affected 923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9 before a9e5924daa954c9f585c1ca00358afe71d6781c4; affected 923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9 before d23264c257a70dbe021b43b3bc2ee16134cd2c69; affected 923f3a2b48bdccb6a1d1f0dd48de03de7ad936d9 before d8df126349dad855cdfedd6bbf315bad2e901c2f |
| Linux / Linux | affected 5.8; unaffected 0 before 5.8; unaffected 5.10.242 through 5.10.*; unaffected 5.15.190 through 5.15.*; unaffected 6.1.149 through 6.1.*; unaffected 6.6.103 through 6.6.*; unaffected 6.12.44 through 6.12.*; unaffected 6.16.4 through 6.16.*; unaffected 6.17 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/62f12cde10118253348a7540e85606869bd69432
- https://git.kernel.org/stable/c/873f32201df8876bdb2563e3187e79149427cab4
- https://git.kernel.org/stable/c/fb81222c1559f89bfe3aa1010f6d112531d55353
- https://git.kernel.org/stable/c/7207923d8453ebfb35667c1736169f2dd796772e
- https://git.kernel.org/stable/c/a9e5924daa954c9f585c1ca00358afe71d6781c4
- https://git.kernel.org/stable/c/d23264c257a70dbe021b43b3bc2ee16134cd2c69
- https://git.kernel.org/stable/c/d8df126349dad855cdfedd6bbf315bad2e901c2f
ADP enrichment
No English description supplied.
No English description supplied.