Riskcovery

CVE-2026-64558

s390/pkey: Check length in pkey_pckmo handler implementation

State
Published
Severity
7.8 High
Published
Jul 29, 2026
Updated
Oct 19, 2026
Reserved
Jul 19, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

Affected Products

ProductVersions
LinuxLinux
  • 8fcc231ce3bea12b78bb94b280cdc03cff342435 to before 02028a24e26d85262ab9c8fc4344e1f3503007fcAffected
  • 8fcc231ce3bea12b78bb94b280cdc03cff342435 to before 433e5e70cdc1edf382d28d08a885b22e2b98b7daAffected
  • 8fcc231ce3bea12b78bb94b280cdc03cff342435 to before 614aa0491c7a190556c2345dddee0b6f5ed90989Affected
  • 8fcc231ce3bea12b78bb94b280cdc03cff342435 to before 1ac287e2af9a9112fe271427ef45eceb26bce8b4Affected
LinuxLinux
  • 6.12Affected
  • before 6.12Not affected
  • 6.12.97 through 6.12.*Not affected
  • 6.18.40 through 6.18.*Not affected
  • 7.1.5 through 7.1.*Not affected
  • 7.2 and laterNot affected

References

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