CVE-2026-23211
- Source
- https://cve.org/CVERecord?id=CVE-2026-23211
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23211.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-23211
- Downstream
- Published
- 2026-02-18T14:16:27Z
- Modified
- 2026-08-12T03:51:40Z
- Summary
- mm, swap: restore swap_space attr aviod kernel panic
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
mm, swap: restore swap_space attr aviod kernel panic
commit 8b47299a411a ("mm, swap: mark swap address space ro and add context debug check") made the swap address space read-only. It may lead to kernel panic if arch_prepare_to_swap returns a failure under heavy memory pressure as follows,
el1_abort+0x40/0x64 el1h_64_sync_handler+0x48/0xcc el1h_64_sync+0x84/0x88 errseq_set+0x4c/0xb8 (P) __filemap_set_wb_err+0x20/0xd0 shrink_folio_list+0xc20/0x11cc evict_folios+0x1520/0x1be4 try_to_shrink_lruvec+0x27c/0x3dc shrink_one+0x9c/0x228 shrink_node+0xb3c/0xeac do_try_to_free_pages+0x170/0x4f0 try_to_free_pages+0x334/0x534 __alloc_pages_direct_reclaim+0x90/0x158 __alloc_pages_slowpath+0x334/0x588 __alloc_frozen_pages_noprof+0x224/0x2fc __folio_alloc_noprof+0x14/0x64 vma_alloc_zeroed_movable_folio+0x34/0x44 do_pte_missing+0xad4/0x1040 handle_mm_fault+0x4a4/0x790 do_page_fault+0x288/0x5f8 do_translation_fault+0x38/0x54 do_mem_abort+0x54/0xa8
Restore swap address space as not ro to avoid the panic.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23211.json" }- References
-
- https://git.kernel.org/stable/c/a0f3c0845a4ff68d403c568266d17e9cc553e561
- https://git.kernel.org/stable/c/b0020cbd26380177b9fb8b7e75a8f7bdba79db20
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23211.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-23211
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git