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CVE-2026-43389

In the Linux kernel, the following vulnerability has been resolved: mm: memfd_luo: always dirty all folios A dirty folio is one which has been written to. A clean folio is its opposite. Since a clean folio has no user data, it can be freed under memory pressure. memfd preservation with LUO saves the flag at preserve(). This is problematic. The folio might get dirtied later. Saving it at freeze() also doesn't work, since the dirty bit from PTE is normally synced at unmap and there might s
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e8151964b879fe1fee5459fd59bf32228c5950e23cbd2860aa305644cdac0202
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/memfd_luo.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e901c871d4b592f0042e30f3a0f031eae79744ec","status":"affected","version":"b3749f174d686627f702234e64bad976dc432dbc","versionType":"git"},{"lessThan":"7e04bf1f33151a30e06a65b74b5f2c19fc2be128","status":"affected","version":"b3749f174d686627f702234e64bad976dc432dbc","versionType":"git"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bbf218c0836242ff4e7d60a5b3b6ca3e908f79ea5c58220f59630397ebea8c4c · sha256:94a0d5a7ed1956cf… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["mm/memfd_luo.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.19"},{"lessThan":"6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.9","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bbf218c0836242ff4e7d60a5b3b6ca3e908f79ea5c58220f59630397ebea8c4c · sha256:94a0d5a7ed1956cf… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["mm/memfd_luo.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e901c871d4b592f0042e30f3a0f031eae79744ec","status":"affected","version":"b3749f174d686627f702234e64bad976dc432dbc","versionType":"git"},{"lessThan":"7e04bf1f33151a30e06a65b74b5f2c19fc2be128","status":"affected","version":"b3749f174d686627f702234e64bad976dc432dbc","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bbf218c0836242ff4e7d60a5b3b6ca3e908f79ea5c58220f59630397ebea8c4c · sha256:94a0d5a7ed1956cf… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["mm/memfd_luo.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.19"},{"lessThan":"6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.9","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bbf218c0836242ff4e7d60a5b3b6ca3e908f79ea5c58220f59630397ebea8c4c · sha256:94a0d5a7ed1956cf… · /containers/cna/affected/1

Source references

2 source assertions
{"url":"https://git.kernel.org/stable/c/7e04bf1f33151a30e06a65b74b5f2c19fc2be128"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:bbf218c0836242ff4e7d60a5b3b6ca3e908f79ea5c58220f59630397ebea8c4c · sha256:94a0d5a7ed1956cf… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/e901c871d4b592f0042e30f3a0f031eae79744ec"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:bbf218c0836242ff4e7d60a5b3b6ca3e908f79ea5c58220f59630397ebea8c4c · sha256:94a0d5a7ed1956cf… · /containers/cna/references/0

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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