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In the Linux kernel, the following vulnerability has been resolved:
mm/huge_memory: initialise workingset state before folio split
xas_try_split() adds __GFP_ACCOUNT for page-cache xa_nodes, but __folio_split() leaves the xa_state's xa_lru unset. That lets a live, memcg-charged xa_node exist without being linked into the mapping's shadow_nodes list_lru; when reclaim later walks the list_lru it trips VM_WARN_ON(!css_is_dying()).
Use mapping_set_update() to install both the workingset update callback and the shadow_nodes list_lru on the xa_state.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Ubuntu | — | Upgrade linux-oracleUpgrade linuxUpgrade linux-riscv-7.0Upgrade linux-ibmUpgrade linux-riscvUpgrade linux-gcpUpgrade linux-hwe-7.0Upgrade linux-oem-7.0Upgrade linux-aws | Nov 3, 2026 | Sep 3, 2026 |
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