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CVE-2026-43348

In the Linux kernel, the following vulnerability has been resolved: mshv_vtl: Fix vmemmap_shift exceeding MAX_FOLIO_ORDER When registering VTL0 memory via MSHV_ADD_VTL0_MEMORY, the kernel computes pgmap->vmemmap_shift as the number of trailing zeros in the OR of start_pfn and last_pfn, intending to use the largest compound page order both endpoints are aligned to. However, this value is not clamped to MAX_FOLIO_ORDER, so a sufficiently aligned range (e.g. physical range [0x800000000000, 0x800
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:cfe06666d51b5f9b41014a74bb6d140d8aa2a6e96600fa2f298e15953a2af8db
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_vtl_main.c","include/uapi/linux/mshv.h"],"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":"7.0.*","status":"unaffected","version":"7.0.2","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:782693f36657c4b7a3b16ab79dc749163b1fba1cc9a0127155269851d781b268 · sha256:a7ade493f68846d0… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/hv/mshv_vtl_main.c","include/uapi/linux/mshv.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a142ca4b6481e71498712800b20e0c0fcf02843b","status":"affected","version":"7bfe3b8ea6e30437e01fcb8e4f56ef6e4d986d0f","versionType":"git"},{"lessThan":"404cd6bffe17e25e0f94ed2775ffdd6cd10ac3fd","status":"affected","version":"7bfe3b8ea6e30437e01fcb8e4f56ef6e4d986d0f","versionType":"git"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:782693f36657c4b7a3b16ab79dc749163b1fba1cc9a0127155269851d781b268 · sha256:a7ade493f68846d0… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/hv/mshv_vtl_main.c","include/uapi/linux/mshv.h"],"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":"7.0.*","status":"unaffected","version":"7.0.2","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:782693f36657c4b7a3b16ab79dc749163b1fba1cc9a0127155269851d781b268 · sha256:a7ade493f68846d0… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/hv/mshv_vtl_main.c","include/uapi/linux/mshv.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a142ca4b6481e71498712800b20e0c0fcf02843b","status":"affected","version":"7bfe3b8ea6e30437e01fcb8e4f56ef6e4d986d0f","versionType":"git"},{"lessThan":"404cd6bffe17e25e0f94ed2775ffdd6cd10ac3fd","status":"affected","version":"7bfe3b8ea6e30437e01fcb8e4f56ef6e4d986d0f","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:782693f36657c4b7a3b16ab79dc749163b1fba1cc9a0127155269851d781b268 · sha256:a7ade493f68846d0… · /containers/cna/affected/0

Source references

2 source assertions
{"url":"https://git.kernel.org/stable/c/404cd6bffe17e25e0f94ed2775ffdd6cd10ac3fd"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:782693f36657c4b7a3b16ab79dc749163b1fba1cc9a0127155269851d781b268 · sha256:a7ade493f68846d0… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/a142ca4b6481e71498712800b20e0c0fcf02843b"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:782693f36657c4b7a3b16ab79dc749163b1fba1cc9a0127155269851d781b268 · sha256:a7ade493f68846d0… · /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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