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CVE-2026-64070

In the Linux kernel, the following vulnerability has been resolved: powerpc/hv-gpci: fix preempt count leak in sysfs show paths Four sysfs show() callbacks in hv-gpci take get_cpu_var(hv_gpci_reqb) (which calls preempt_disable()) but only call the matching put_cpu_var() on the error path under the 'out:' label. Every successful read leaks one preempt_disable(): processor_bus_topology_show() processor_config_show() affinity_domain_via_virtual_processor_show() affinity_domain_via_domain
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:57d7d359e5e2017d96b0949c996d330a206ba82351a91b012aad044a8968cb41
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":["arch/powerpc/perf/hv-gpci.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":"7.0.*","status":"unaffected","version":"7.0.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:018b3767b79b05286ee8bea6b0f419c09de2be6b536707f96a7388cc617dc6de · sha256:64b2b5dbfddf6fb1… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/powerpc/perf/hv-gpci.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"903409000a07ac8e31ffedeb8516f4f8d67150c8","status":"affected","version":"71f1c39647d8c9d4d54a861ec81f1ff17544bcb6","versionType":"git"},{"lessThan":"dbc30a57bd8e026995e9fa8e8c31cffd18542c01","status":"affected","version":"71f1c39647d8c9d4d54a861ec81f1ff17544bcb6","versionType":"git"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:018b3767b79b05286ee8bea6b0f419c09de2be6b536707f96a7388cc617dc6de · sha256:64b2b5dbfddf6fb1… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["arch/powerpc/perf/hv-gpci.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":"7.0.*","status":"unaffected","version":"7.0.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:018b3767b79b05286ee8bea6b0f419c09de2be6b536707f96a7388cc617dc6de · sha256:64b2b5dbfddf6fb1… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/powerpc/perf/hv-gpci.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"903409000a07ac8e31ffedeb8516f4f8d67150c8","status":"affected","version":"71f1c39647d8c9d4d54a861ec81f1ff17544bcb6","versionType":"git"},{"lessThan":"dbc30a57bd8e026995e9fa8e8c31cffd18542c01","status":"affected","version":"71f1c39647d8c9d4d54a861ec81f1ff17544bcb6","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:018b3767b79b05286ee8bea6b0f419c09de2be6b536707f96a7388cc617dc6de · sha256:64b2b5dbfddf6fb1… · /containers/cna/affected/0

Source references

2 source assertions
{"url":"https://git.kernel.org/stable/c/903409000a07ac8e31ffedeb8516f4f8d67150c8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:018b3767b79b05286ee8bea6b0f419c09de2be6b536707f96a7388cc617dc6de · sha256:64b2b5dbfddf6fb1… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/dbc30a57bd8e026995e9fa8e8c31cffd18542c01"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:018b3767b79b05286ee8bea6b0f419c09de2be6b536707f96a7388cc617dc6de · sha256:64b2b5dbfddf6fb1… · /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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