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CVE-2026-64514

In the Linux kernel, the following vulnerability has been resolved: userfaultfd: gate must_wait writability check on pte_present() userfaultfd_must_wait() and userfaultfd_huge_must_wait() read the PTE without taking the page table lock and then apply pte_write() / huge_pte_write() to it. Those accessors decode bits from the present encoding only; on a swap or migration entry they read the offset bits that happen to share the same position and return an undefined result. The intent of the che
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:839e4e291c9171161dbf75360f19f32d34a1acdd3988c4e157ac18ef2a3e4adc
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/userfaultfd.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a5700a4c1c9099ac2ac73fe8a09cf059972e0d2f","status":"affected","version":"369cd2121be440543280b91056de187f625d0dbb","versionType":"git"},{"lessThan":"d4026417e8184d13850a0bad4d96ceb6ed9f7152","status":"affected","version":"369cd2121be440543280b91056de187f625d0dbb","versionType":"git"},{"lessThan":"29e6f952c5fb7dc1d6b90fe5b7f36063d44ddae0","status":"affected","version":"369cd2121be440543280b91056de1…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b0d586d177253a211681651594287042ea5b5683ca867f42a2d437201257390e · sha256:728d40f1c8ea86e6… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["mm/userfaultfd.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.11"},{"lessThan":"4.11","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrEq…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b0d586d177253a211681651594287042ea5b5683ca867f42a2d437201257390e · sha256:728d40f1c8ea86e6… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["mm/userfaultfd.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a5700a4c1c9099ac2ac73fe8a09cf059972e0d2f","status":"affected","version":"369cd2121be440543280b91056de187f625d0dbb","versionType":"git"},{"lessThan":"d4026417e8184d13850a0bad4d96ceb6ed9f7152","status":"affected","version":"369cd2121be440543280b91056de187f625d0dbb","versionType":"git"},{"lessThan":"29e6f952c5fb7dc1d6b90fe5b7f36063d44ddae0","status":"affected","version":"369cd2121be440543280b91056de1…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b0d586d177253a211681651594287042ea5b5683ca867f42a2d437201257390e · sha256:728d40f1c8ea86e6… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["mm/userfaultfd.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.11"},{"lessThan":"4.11","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrEq…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b0d586d177253a211681651594287042ea5b5683ca867f42a2d437201257390e · sha256:728d40f1c8ea86e6… · /containers/cna/affected/1

Source references

8 source assertions
{"url":"https://git.kernel.org/stable/c/29e6f952c5fb7dc1d6b90fe5b7f36063d44ddae0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b0d586d177253a211681651594287042ea5b5683ca867f42a2d437201257390e · sha256:728d40f1c8ea86e6… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/5f4dbdb0a87596214076b20b94f2b71b522170b3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b0d586d177253a211681651594287042ea5b5683ca867f42a2d437201257390e · sha256:728d40f1c8ea86e6… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/60d696a037eeeedfb57756dfe7ec08a1587c8631"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b0d586d177253a211681651594287042ea5b5683ca867f42a2d437201257390e · sha256:728d40f1c8ea86e6… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/710183888174639a15fcec16cd1af766b8480bb7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b0d586d177253a211681651594287042ea5b5683ca867f42a2d437201257390e · sha256:728d40f1c8ea86e6… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/8e80af52db652fbc41320eee45a4f73bc029faf2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b0d586d177253a211681651594287042ea5b5683ca867f42a2d437201257390e · sha256:728d40f1c8ea86e6… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/a5700a4c1c9099ac2ac73fe8a09cf059972e0d2f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b0d586d177253a211681651594287042ea5b5683ca867f42a2d437201257390e · sha256:728d40f1c8ea86e6… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/a6e9a4939e359599701b1da351e84f72e021443a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b0d586d177253a211681651594287042ea5b5683ca867f42a2d437201257390e · sha256:728d40f1c8ea86e6… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/d4026417e8184d13850a0bad4d96ceb6ed9f7152"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b0d586d177253a211681651594287042ea5b5683ca867f42a2d437201257390e · sha256:728d40f1c8ea86e6… · /containers/cna/references/1

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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