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CVE-2026-64300

In the Linux kernel, the following vulnerability has been resolved: perf/aux: Fix page UAF in map_range() map_range() reads rb->aux_pages[], rb->aux_nr_pages and rb->aux_pgoff via perf_mmap_to_page() while holding only event->mmap_mutex. Those fields are serialized by rb->aux_mutex, and mmap_mutex is per event. Thus, two events sharing one rb via PERF_EVENT_IOC_SET_OUTPUT can race rb_alloc_aux() with map_range(), leading to a page-UAF scenario as follows: CPU 0 CP
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:50889b516024633d2a1878814e223be0704aad5f290a74ee4a480852ad7cf585
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":"unaffected","product":"Linux","programFiles":["kernel/events/core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c8b7e113f7b61eef2f017e6329c27c2331058c5a","status":"affected","version":"b709eb872e19a19607bbb6d2975bc264d59735cf","versionType":"git"},{"lessThan":"0cff05bd2186020f8706233e261016d149cc24db","status":"affected","version":"b709eb872e19a19607bbb6d2975bc264d59735cf","versionType":"git"},{"lessThan":"5948aaf64f81f217a25dcc2bf6c0779bca19566c","status":"affected","version":"b709eb872e19a19607bbb6d29…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:130232aa1bd336839a7f6d1d3ebea32c6b798826e43225c4d18f35864236d494 · sha256:2b2311f0aba2b702… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/events/core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.14"},{"lessThan":"6.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.39","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc3","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:130232aa1bd336839a7f6d1d3ebea32c6b798826e43225c4d18f35864236d494 · sha256:2b2311f0aba2b702… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/events/core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c8b7e113f7b61eef2f017e6329c27c2331058c5a","status":"affected","version":"b709eb872e19a19607bbb6d2975bc264d59735cf","versionType":"git"},{"lessThan":"0cff05bd2186020f8706233e261016d149cc24db","status":"affected","version":"b709eb872e19a19607bbb6d2975bc264d59735cf","versionType":"git"},{"lessThan":"5948aaf64f81f217a25dcc2bf6c0779bca19566c","status":"affected","version":"b709eb872e19a19607bbb6d29…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:130232aa1bd336839a7f6d1d3ebea32c6b798826e43225c4d18f35864236d494 · sha256:2b2311f0aba2b702… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/events/core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.14"},{"lessThan":"6.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.39","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc3","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:130232aa1bd336839a7f6d1d3ebea32c6b798826e43225c4d18f35864236d494 · sha256:2b2311f0aba2b702… · /containers/cna/affected/1

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:v2:130232aa1bd336839a7f6d1d3ebea32c6b798826e43225c4d18f35864236d494 · sha256:2b2311f0aba2b702… · /containers/cna/metrics/0/cvssV3_1

Source references

3 source assertions
{"url":"https://git.kernel.org/stable/c/0cff05bd2186020f8706233e261016d149cc24db"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:130232aa1bd336839a7f6d1d3ebea32c6b798826e43225c4d18f35864236d494 · sha256:2b2311f0aba2b702… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/5948aaf64f81f217a25dcc2bf6c0779bca19566c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:130232aa1bd336839a7f6d1d3ebea32c6b798826e43225c4d18f35864236d494 · sha256:2b2311f0aba2b702… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/c8b7e113f7b61eef2f017e6329c27c2331058c5a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:130232aa1bd336839a7f6d1d3ebea32c6b798826e43225c4d18f35864236d494 · sha256:2b2311f0aba2b702… · /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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