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CVE-2026-23432

In the Linux kernel, the following vulnerability has been resolved: mshv: Fix use-after-free in mshv_map_user_memory error path In the error path of mshv_map_user_memory(), calling vfree() directly on the region leaves the MMU notifier registered. When userspace later unmaps the memory, the notifier fires and accesses the freed region, causing a use-after-free and potential kernel panic. Replace vfree() with mshv_partition_put() to properly unregister the MMU notifier before freeing the regio
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:29eb9c241f9134d4c0a8339a8aa66301044a341a2394caca7dd7721340c09b4b
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_root_main.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":"6.19.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3e27c25082586afa391048257846e0a4842adde3b408636dabe0c23fd5fed570 · sha256:d23d15f28aaf7eee… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/hv/mshv_root_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"34861bdc0c0196b6c2dd48f7454029407704ff6e","status":"affected","version":"b9a66cd5ccbb9fade15d0e427e19470d8ad35b75","versionType":"git"},{"lessThan":"6922db250422a0dfee34de322f86b7a73d713d33","status":"affected","version":"b9a66cd5ccbb9fade15d0e427e19470d8ad35b75","versionType":"git"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3e27c25082586afa391048257846e0a4842adde3b408636dabe0c23fd5fed570 · sha256:d23d15f28aaf7eee… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/hv/mshv_root_main.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":"6.19.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3e27c25082586afa391048257846e0a4842adde3b408636dabe0c23fd5fed570 · sha256:d23d15f28aaf7eee… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/hv/mshv_root_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"34861bdc0c0196b6c2dd48f7454029407704ff6e","status":"affected","version":"b9a66cd5ccbb9fade15d0e427e19470d8ad35b75","versionType":"git"},{"lessThan":"6922db250422a0dfee34de322f86b7a73d713d33","status":"affected","version":"b9a66cd5ccbb9fade15d0e427e19470d8ad35b75","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3e27c25082586afa391048257846e0a4842adde3b408636dabe0c23fd5fed570 · sha256:d23d15f28aaf7eee… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3e27c25082586afa391048257846e0a4842adde3b408636dabe0c23fd5fed570 · sha256:d23d15f28aaf7eee… · /containers/cna/metrics/0/cvssV3_1

Source references

2 source assertions
{"url":"https://git.kernel.org/stable/c/34861bdc0c0196b6c2dd48f7454029407704ff6e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3e27c25082586afa391048257846e0a4842adde3b408636dabe0c23fd5fed570 · sha256:d23d15f28aaf7eee… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/6922db250422a0dfee34de322f86b7a73d713d33"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3e27c25082586afa391048257846e0a4842adde3b408636dabe0c23fd5fed570 · sha256:d23d15f28aaf7eee… · /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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