Riskcovery

CVE-2026-80709

s390/zcrypt: Fix wrong domain value verification with EP11 CPRBs

State
Published
Severity
7.8 High
Published
Aug 28, 2026
Updated
Oct 16, 2026
Reserved
Aug 26, 2026

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

s390/zcrypt: Fix wrong domain value verification with EP11 CPRBs

There is a wrong upper limit check for the domain value when an EP11 CPRB is processed for sending to a crypto card. This check is only active on custom device nodes but may lead to access heap memory behind perms->adm when an administrative CPRB is sent. Add correct limit (AP_DOMAINS = 256) checking to fix this.

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

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • cfd68b33094e1a92249850ff3c3c92ae9112a541 to before 4589f742718d0256ea6dd1f5a78be6e689bdb8aaAffected
  • cfd68b33094e1a92249850ff3c3c92ae9112a541 to before b505dcc8307d64468b463dfad45a03bf865c637eAffected
  • cfd68b33094e1a92249850ff3c3c92ae9112a541 to before 13e53d6ae1c3b2ff1be75b9ef09be26f4ec3ce15Affected
  • cfd68b33094e1a92249850ff3c3c92ae9112a541 to before 672b12940e3f1336dfed5287412a71500adf2a76Affected
  • cfd68b33094e1a92249850ff3c3c92ae9112a541 to before 1223477ca88e2396eca440919d0ca8754df79bd5Affected
  • cfd68b33094e1a92249850ff3c3c92ae9112a541 to before 983279d7f86ade73db86f886e09172dd567031b5Affected
LinuxLinux
  • 5.18Affected
  • before 5.18Not affected
  • 6.1.183 through 6.1.*Not affected
  • 6.6.151 through 6.6.*Not affected
  • 6.12.103 through 6.12.*Not affected
  • 6.18.44 through 6.18.*Not affected
  • 7.1.8 through 7.1.*Not affected
  • 7.2 and laterNot affected

References

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