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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-80709

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

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • cfd68b33094e1a92249850ff3c3c92ae9112a541 to < 4589f742718d0256ea6dd1f5a78be6e689bdb8aaaffected
  • cfd68b33094e1a92249850ff3c3c92ae9112a541 to < b505dcc8307d64468b463dfad45a03bf865c637eaffected
  • cfd68b33094e1a92249850ff3c3c92ae9112a541 to < 13e53d6ae1c3b2ff1be75b9ef09be26f4ec3ce15affected
  • cfd68b33094e1a92249850ff3c3c92ae9112a541 to < 672b12940e3f1336dfed5287412a71500adf2a76affected
  • cfd68b33094e1a92249850ff3c3c92ae9112a541 to < 1223477ca88e2396eca440919d0ca8754df79bd5affected
  • cfd68b33094e1a92249850ff3c3c92ae9112a541 to < 983279d7f86ade73db86f886e09172dd567031b5affected

Linux Linux

Default version status: affected

  • 5.18affected
  • 0 to < 5.18unaffected
  • 6.1.183 to ≤ 6.1.*unaffected
  • 6.6.151 to ≤ 6.6.*unaffected
  • 6.12.103 to ≤ 6.12.*unaffected
  • 6.18.44 to ≤ 6.18.*unaffected
  • 7.1.8 to ≤ 7.1.*unaffected
  • 7.2 to ≤ *unaffected

References