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CVE-2026-80709

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

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 6.1.183, 6.6.151, 6.12.103, 6.18.44, 7.1.8
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • Linux Linux

    From cfd68b33094e1a92249850ff3c3c92ae9112a541 · fixed in 4589f742718d0256ea6dd1f5a78be6e689bdb8aa; From cfd68b33094e1a92249850ff3c3c92ae9112a541 · fixed in b505dcc8307d64468b463dfad45a03bf865c637e; From cfd68b33094e1a92249850ff3c3c92ae9112a541 · fixed in 13e53d6ae1c3b2ff1be75b9ef09be26f4ec3ce15; From cfd68b33094e1a92249850ff3c3c92ae9112a541 · fixed in 672b12940e3f1336dfed5287412a71500adf2a76; From cfd68b33094e1a92249850ff3c3c92ae9112a541 · fixed in 1223477ca88e2396eca440919d0ca8754df79bd5; From cfd68b33094e1a92249850ff3c3c92ae9112a541 · fixed in 983279d7f86ade73db86f886e09172dd567031b5

  • Linux Linux

    5.18

  • KernelLinux

    From 5.18.0 · fixed in 6.1.183; From 6.2.0 · fixed in 6.6.151; From 6.7.0 · fixed in 6.12.103; From 6.13.0 · fixed in 6.18.44; From 6.19.0 · fixed in 7.1.8

References 6

git.kernel.org