CVE Explorer

CVE-2026-64402

In the Linux kernel, the following vulnerability has been resolved: coresight: ultrasoc-smb: Fix OOB write in smb_sync_perf_buffer() When the SMB sink is used as a perf AUX sink, smb_update_buffer() calls smb_sync_perf_buffer() to copy hardware trace data into the perf AUX ring buffer pages. It derives pg_idx = head >> PAGE_SHIFT from @head, which is handle->head, and indexes dst_pages[pg_idx]. The pg_idx %= nr_pages normalization is only applied after the first loop iteration. This leaves th

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:90508c131dc7b7b4636cb6be748ce1e3b9aeef56835c3b232a9ce3198042a64a

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/hwtracing/coresight/ultrasoc-smb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.3"},{"lessThan":"6.3","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.96","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.39","versionType":"s…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:4e98bbc3012f2bba040e0c6c03f98e098cd72d558284de06c3a9507819b4fb30 · sha256:30874d8bff2bc88e… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/hwtracing/coresight/ultrasoc-smb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"38dbc8db8341ccdf8e1e1a067453d33ad751864b","status":"affected","version":"06f5c2926aaa0fba7f99678da6ef77cbbbda1441","versionType":"git"},{"lessThan":"4c5a0a946373da99a80398289b28845b5ae40cd1","status":"affected","version":"06f5c2926aaa0fba7f99678da6ef77cbbbda1441","versionType":"git"},{"lessThan":"661a019ac0413ecec9e5d1dfcc12fbca8e78d5fb","status":"affected","version":"06f…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:4e98bbc3012f2bba040e0c6c03f98e098cd72d558284de06c3a9507819b4fb30 · sha256:30874d8bff2bc88e… · /containers/cna/affected/0

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:4e98bbc3012f2bba040e0c6c03f98e098cd72d558284de06c3a9507819b4fb30 · sha256:30874d8bff2bc88e… · /containers/cna/affected/1

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:4e98bbc3012f2bba040e0c6c03f98e098cd72d558284de06c3a9507819b4fb30 · sha256:30874d8bff2bc88e… · /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:v2:4e98bbc3012f2bba040e0c6c03f98e098cd72d558284de06c3a9507819b4fb30 · sha256:30874d8bff2bc88e… · /containers/cna/metrics/0/cvssV3_1

Source references

5 source assertions

{"url":"https://git.kernel.org/stable/c/38dbc8db8341ccdf8e1e1a067453d33ad751864b"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:4e98bbc3012f2bba040e0c6c03f98e098cd72d558284de06c3a9507819b4fb30 · sha256:30874d8bff2bc88e… · /containers/cna/references/0

{"url":"https://git.kernel.org/stable/c/4c5a0a946373da99a80398289b28845b5ae40cd1"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:4e98bbc3012f2bba040e0c6c03f98e098cd72d558284de06c3a9507819b4fb30 · sha256:30874d8bff2bc88e… · /containers/cna/references/1

{"url":"https://git.kernel.org/stable/c/661a019ac0413ecec9e5d1dfcc12fbca8e78d5fb"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:4e98bbc3012f2bba040e0c6c03f98e098cd72d558284de06c3a9507819b4fb30 · sha256:30874d8bff2bc88e… · /containers/cna/references/2

{"url":"https://git.kernel.org/stable/c/98495b5a4d77dd22e106f462b76e1093a55b29a7"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:4e98bbc3012f2bba040e0c6c03f98e098cd72d558284de06c3a9507819b4fb30 · sha256:30874d8bff2bc88e… · /containers/cna/references/4

{"url":"https://git.kernel.org/stable/c/daf6246ab988fc8bdc82ad7c8d0b1c182d11b15f"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:4e98bbc3012f2bba040e0c6c03f98e098cd72d558284de06c3a9507819b4fb30 · sha256:30874d8bff2bc88e… · /containers/cna/references/3

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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