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CVE-2026-64558

In the Linux kernel, the following vulnerability has been resolved: s390/pkey: Check length in pkey_pckmo handler implementation Explicitly check the length of the target buffer in the pkey_pckmo implementation of the key_to_protkey() handler function. The handler function fails, if the generated output data exceeds the length of the provided target buffer.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:8c085507d82d97ee083ff2bfc86e014c3050574054290a1c885721c6bc34db2e
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/s390/crypto/pkey_pckmo.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.12"},{"lessThan":"6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.97","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.40","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8430f95be1e0168185153bf0e621c5ba1bf498dc492b57d90a0122f52d93b929 · sha256:e91e7ae5b726c82a… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/s390/crypto/pkey_pckmo.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"02028a24e26d85262ab9c8fc4344e1f3503007fc","status":"affected","version":"8fcc231ce3bea12b78bb94b280cdc03cff342435","versionType":"git"},{"lessThan":"433e5e70cdc1edf382d28d08a885b22e2b98b7da","status":"affected","version":"8fcc231ce3bea12b78bb94b280cdc03cff342435","versionType":"git"},{"lessThan":"614aa0491c7a190556c2345dddee0b6f5ed90989","status":"affected","version":"8fcc231ce3bea…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8430f95be1e0168185153bf0e621c5ba1bf498dc492b57d90a0122f52d93b929 · sha256:e91e7ae5b726c82a… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/s390/crypto/pkey_pckmo.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.12"},{"lessThan":"6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.97","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.40","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8430f95be1e0168185153bf0e621c5ba1bf498dc492b57d90a0122f52d93b929 · sha256:e91e7ae5b726c82a… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/s390/crypto/pkey_pckmo.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"02028a24e26d85262ab9c8fc4344e1f3503007fc","status":"affected","version":"8fcc231ce3bea12b78bb94b280cdc03cff342435","versionType":"git"},{"lessThan":"433e5e70cdc1edf382d28d08a885b22e2b98b7da","status":"affected","version":"8fcc231ce3bea12b78bb94b280cdc03cff342435","versionType":"git"},{"lessThan":"614aa0491c7a190556c2345dddee0b6f5ed90989","status":"affected","version":"8fcc231ce3bea…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8430f95be1e0168185153bf0e621c5ba1bf498dc492b57d90a0122f52d93b929 · sha256:e91e7ae5b726c82a… · /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:v2:8430f95be1e0168185153bf0e621c5ba1bf498dc492b57d90a0122f52d93b929 · sha256:e91e7ae5b726c82a… · /containers/cna/metrics/0/cvssV3_1

Source references

4 source assertions
{"url":"https://git.kernel.org/stable/c/02028a24e26d85262ab9c8fc4344e1f3503007fc"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8430f95be1e0168185153bf0e621c5ba1bf498dc492b57d90a0122f52d93b929 · sha256:e91e7ae5b726c82a… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/1ac287e2af9a9112fe271427ef45eceb26bce8b4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8430f95be1e0168185153bf0e621c5ba1bf498dc492b57d90a0122f52d93b929 · sha256:e91e7ae5b726c82a… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/433e5e70cdc1edf382d28d08a885b22e2b98b7da"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8430f95be1e0168185153bf0e621c5ba1bf498dc492b57d90a0122f52d93b929 · sha256:e91e7ae5b726c82a… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/614aa0491c7a190556c2345dddee0b6f5ed90989"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8430f95be1e0168185153bf0e621c5ba1bf498dc492b57d90a0122f52d93b929 · sha256:e91e7ae5b726c82a… · /containers/cna/references/2

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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