Answer in brief
CVE-2026-90082 records a Unknown severity vulnerability in net: mana: Cap MSI-X vectors to the device MSI-X table size. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=755391121038c06cb653241aa94dcabd87179f62 <4f9827b314ee57cd99f86f8dbadcaf567112e2b2 || >=755391121038c06cb653241aa94dcabd87179f62 <2c7493f980140a5c40eb4f98f97c557193a2c330 | 4f9827b314ee57cd99f86f8dbadcaf567112e2b2, 2c7493f980140a5c40eb4f98f97c557193a2c330 |
| Linux/Linuxgeneric | 6.17 | Not reported |
| Linux/Linuxgeneric | >=755391121038c06cb653241aa94dcabd87179f62 <7b3e08eea1e8cae37e84540c5cb4aee4887e46ac || >=755391121038c06cb653241aa94dcabd87179f62 <4f9827b314ee57cd99f86f8dbadcaf567112e2b2 || >=755391121038c06cb653241aa94dcabd87179f62 <2c7493f980140a5c40eb4f98f97c557193a2c330 | 7b3e08eea1e8cae37e84540c5cb4aee4887e46ac, 4f9827b314ee57cd99f86f8dbadcaf567112e2b2, 2c7493f980140a5c40eb4f98f97c557193a2c330 |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
In the Linux kernel, the following vulnerability has been resolved: net: mana: Cap MSI-X vectors to the device MSI-X table size mana_gd_query_max_resources() sizes gc->num_msix_usable from resp.max_msix and the CPU count, but never from the device MSI-X table. On a 1792 vCPU M-series VM that yields 1793 while the table has 1024 entries, and mana_gd_setup_remaining_irqs() then walks indices 1..1792, running off the end of the region mapped by msix_map_region(): BUG: unable to handle page fault for address: ff8e347f8b99800c RIP: 0010:msix_prepare_msi_desc+0x7a/0x90 RAX: 0000000000004000 RBX: ff4330cb164ea780 RCX: ff8e347f8b998000 Call Trace: <TASK> __msi_domain_alloc_irqs+0x13a/0x440 msi_domain_alloc_irq_at+0x149/0x1b0 mana_gd_setup+0x351/0x890 mana_gd_probe+0x274/0x390 </TASK> RAX is index 1024 * PCI_MSIX_ENTRY_SIZE, one entry past the table. msi_insert_desc() does range check the index, but only against the MSI domain hwsize, which matches the table only for devices on an MSI parent domain. With a global PCI/MSI domain hwsize is MSI_XA_DOMAIN_SIZE, so nothing bounds the request. Cap num_msix_usable with pci_msix_vec_count().
Quoted source text, attributed separately from HOL analysis.