CVE Explorer

CVE-2026-64244

In the Linux kernel, the following vulnerability has been resolved: drivers/base/memory: set mem->altmap after successful device registration If __add_memory_block() fails at xa_store() (under memory pressure for example), device_unregister() is called, which eventually triggers memory_block_release() with mem->altmap still set, causing a WARN_ON(mem->altmap). This was triggered by modifying virtio-mem driver. Fix this by delaying the assignment of mem->altmap until after __add_memory_block(

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:3c40e5efb928936ed66ab9845dba9f34a07999cfe7dd36083178d2e510ff5a67

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/base/memory.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"802e113cf120df7208e4c7e604950a85e87120a8","status":"affected","version":"1a8c64e110435e44e71bcd50a75663174b575f22","versionType":"git"},{"lessThan":"22dc0d042f02ce82aa61422ea5f232628bfd9e9c","status":"affected","version":"1a8c64e110435e44e71bcd50a75663174b575f22","versionType":"git"},{"lessThan":"6c25bf4e44a2b6a14332f952bba0974521f5b72d","status":"affected","version":"1a8c64e110435e44e71bcd50…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:337618e1da1445354aba5dc5c6209e449b5abcf1469caeb6905e5708b21aa234 · sha256:9938f895b41d617a… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/base/memory.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.6"},{"lessThan":"6.6","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.144","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.95","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.37","versionType":"semver"},{"lessThanOrE…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:337618e1da1445354aba5dc5c6209e449b5abcf1469caeb6905e5708b21aa234 · sha256:9938f895b41d617a… · /containers/cna/affected/1

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:337618e1da1445354aba5dc5c6209e449b5abcf1469caeb6905e5708b21aa234 · sha256:9938f895b41d617a… · /containers/cna/affected/0

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:337618e1da1445354aba5dc5c6209e449b5abcf1469caeb6905e5708b21aa234 · sha256:9938f895b41d617a… · /containers/cna/affected/1

Source references

6 source assertions

{"url":"https://git.kernel.org/stable/c/059ac6252a63edf1cea79bf30bd860a8c264b62c"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:337618e1da1445354aba5dc5c6209e449b5abcf1469caeb6905e5708b21aa234 · sha256:9938f895b41d617a… · /containers/cna/references/4

{"url":"https://git.kernel.org/stable/c/22dc0d042f02ce82aa61422ea5f232628bfd9e9c"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:337618e1da1445354aba5dc5c6209e449b5abcf1469caeb6905e5708b21aa234 · sha256:9938f895b41d617a… · /containers/cna/references/1

{"url":"https://git.kernel.org/stable/c/6c25bf4e44a2b6a14332f952bba0974521f5b72d"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:337618e1da1445354aba5dc5c6209e449b5abcf1469caeb6905e5708b21aa234 · sha256:9938f895b41d617a… · /containers/cna/references/2

{"url":"https://git.kernel.org/stable/c/802e113cf120df7208e4c7e604950a85e87120a8"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:337618e1da1445354aba5dc5c6209e449b5abcf1469caeb6905e5708b21aa234 · sha256:9938f895b41d617a… · /containers/cna/references/0

{"url":"https://git.kernel.org/stable/c/a2b8d7827f48ee54a686cb80e4a1d0ff954ec42a"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:337618e1da1445354aba5dc5c6209e449b5abcf1469caeb6905e5708b21aa234 · sha256:9938f895b41d617a… · /containers/cna/references/5

{"url":"https://git.kernel.org/stable/c/bc3dd82a0ffd488bb902f4c69c3d28fd4088d973"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:337618e1da1445354aba5dc5c6209e449b5abcf1469caeb6905e5708b21aa234 · sha256:9938f895b41d617a… · /containers/cna/references/3

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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