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CVE-2026-31397

In the Linux kernel, the following vulnerability has been resolved: mm/huge_memory: fix use of NULL folio in move_pages_huge_pmd() move_pages_huge_pmd() handles UFFDIO_MOVE for both normal THPs and huge zero pages. For the huge zero page path, src_folio is explicitly set to NULL, and is used as a sentinel to skip folio operations like lock and rmap. In the huge zero page branch, src_folio is NULL, so folio_mk_pmd(NULL, pgprot) passes NULL through folio_pfn() and page_to_pfn(). With SPARSEME
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d6784ba10584e149f1f3d5f0355027c5401e54111c70fea3955f97f137b75e87
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Linux","programFiles":["mm/huge_memory.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"f3caaee0f9e489fd2282d4ce45791dc8aed2da62","status":"affected","version":"e3981db444a0a18d350d9f92e3f2e8d489b54211","versionType":"git"},{"lessThan":"e3133d0986dc5a231d5419167dbac65312b28b41","status":"affected","version":"e3981db444a0a18d350d9f92e3f2e8d489b54211","versionType":"git"},{"lessThan":"fae654083bfa409bb2244f390232e2be47f05bfc","status":"affected","version":"e3981db444a0a18d350d9f92e3f2e…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c75e9404d8f58805585d662085929e9152331e46bb5b92a02b758c1a6ff35dfe · sha256:cab55765f120dd0e… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["mm/huge_memory.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.16"},{"lessThan":"6.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.20","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c75e9404d8f58805585d662085929e9152331e46bb5b92a02b758c1a6ff35dfe · sha256:cab55765f120dd0e… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["mm/huge_memory.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"f3caaee0f9e489fd2282d4ce45791dc8aed2da62","status":"affected","version":"e3981db444a0a18d350d9f92e3f2e8d489b54211","versionType":"git"},{"lessThan":"e3133d0986dc5a231d5419167dbac65312b28b41","status":"affected","version":"e3981db444a0a18d350d9f92e3f2e8d489b54211","versionType":"git"},{"lessThan":"fae654083bfa409bb2244f390232e2be47f05bfc","status":"affected","version":"e3981db444a0a18d350d9f92e3f2e…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c75e9404d8f58805585d662085929e9152331e46bb5b92a02b758c1a6ff35dfe · sha256:cab55765f120dd0e… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["mm/huge_memory.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.16"},{"lessThan":"6.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.20","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c75e9404d8f58805585d662085929e9152331e46bb5b92a02b758c1a6ff35dfe · sha256:cab55765f120dd0e… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c75e9404d8f58805585d662085929e9152331e46bb5b92a02b758c1a6ff35dfe · sha256:cab55765f120dd0e… · /containers/cna/metrics/0/cvssV3_1

Source references

3 source assertions
{"url":"https://git.kernel.org/stable/c/e3133d0986dc5a231d5419167dbac65312b28b41"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c75e9404d8f58805585d662085929e9152331e46bb5b92a02b758c1a6ff35dfe · sha256:cab55765f120dd0e… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/f3caaee0f9e489fd2282d4ce45791dc8aed2da62"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c75e9404d8f58805585d662085929e9152331e46bb5b92a02b758c1a6ff35dfe · sha256:cab55765f120dd0e… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/fae654083bfa409bb2244f390232e2be47f05bfc"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c75e9404d8f58805585d662085929e9152331e46bb5b92a02b758c1a6ff35dfe · sha256:cab55765f120dd0e… · /containers/cna/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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