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CVE-2026-43045

In the Linux kernel, the following vulnerability has been resolved: mshv: Fix error handling in mshv_region_pin The current error handling has two issues: First, pin_user_pages_fast() can return a short pin count (less than requested but greater than zero) when it cannot pin all requested pages. This is treated as success, leading to partially pinned regions being used, which causes memory corruption. Second, when an error occurs mid-loop, already pinned pages from the current batch are not
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ecdcd10cb1a1512be9cd753118380e609aeb126d1d8e7a93cd791c2fa59e481b
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":"affected","product":"Linux","programFiles":["drivers/hv/mshv_regions.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.15"},{"lessThan":"6.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.12","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:9653b8131fb28700b9e51a2d194d616f629251d363841cf935ae0e2b82b451fc · sha256:f81e409ac612866a… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/hv/mshv_regions.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a7d149152bc5a9119854331c57be35ad31fdf5cc","status":"affected","version":"621191d709b14882270dfd8ea5d7d6cdfebe2c35","versionType":"git"},{"lessThan":"c0e296f257671ba10249630fe58026f29e4804d9","status":"affected","version":"621191d709b14882270dfd8ea5d7d6cdfebe2c35","versionType":"git"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:9653b8131fb28700b9e51a2d194d616f629251d363841cf935ae0e2b82b451fc · sha256:f81e409ac612866a… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/hv/mshv_regions.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.15"},{"lessThan":"6.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.12","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:9653b8131fb28700b9e51a2d194d616f629251d363841cf935ae0e2b82b451fc · sha256:f81e409ac612866a… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/hv/mshv_regions.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a7d149152bc5a9119854331c57be35ad31fdf5cc","status":"affected","version":"621191d709b14882270dfd8ea5d7d6cdfebe2c35","versionType":"git"},{"lessThan":"c0e296f257671ba10249630fe58026f29e4804d9","status":"affected","version":"621191d709b14882270dfd8ea5d7d6cdfebe2c35","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:9653b8131fb28700b9e51a2d194d616f629251d363841cf935ae0e2b82b451fc · sha256:f81e409ac612866a… · /containers/cna/affected/0

Source references

2 source assertions
{"url":"https://git.kernel.org/stable/c/a7d149152bc5a9119854331c57be35ad31fdf5cc"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9653b8131fb28700b9e51a2d194d616f629251d363841cf935ae0e2b82b451fc · sha256:f81e409ac612866a… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/c0e296f257671ba10249630fe58026f29e4804d9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9653b8131fb28700b9e51a2d194d616f629251d363841cf935ae0e2b82b451fc · sha256:f81e409ac612866a… · /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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