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CVE-2026-98387

Unknown

Last modified

CVE-2026-98387 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: s390/crypto: Fix skcipher_walk return code handling in aes_s390 The return codes from skcipher_walk_virt() were not properly checked before entering the processing loops in ecb_aes_crypt() and ctr_aes_crypt(). If skcipher_walk_virt() fails, the walk structure may be in an undefined state, and attempting to process data could lead to incorrect behavior or accessing uninitialized memory. Add proper return code checking to ensure correct handling of the walk initialization and walk advance and eventually return to the caller with that return code..

Description

In the Linux kernel, the following vulnerability has been resolved: s390/crypto: Fix skcipher_walk return code handling in aes_s390 The return codes from skcipher_walk_virt() were not properly checked before entering the processing loops in ecb_aes_crypt() and ctr_aes_crypt(). If skcipher_walk_virt() fails, the walk structure may be in an undefined state, and attempting to process data could lead to incorrect behavior or accessing uninitialized memory. Add proper return code checking to ensure correct handling of the walk initialization and walk advance and eventually return to the caller with that return code.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 7988fb2c03c8cf9936f851ab19a6d21b3c3411c0, < 89b58645646d1dac34162cc2597f42266bfbf930; >= 7988fb2c03c8cf9936f851ab19a6d21b3c3411c0, < 35c3f97569306050e818fa18e17fa97c358f0f28; >= 7988fb2c03c8cf9936f851ab19a6d21b3c3411c0, < aea3e1588f08e381a7a57b2bf1a60cc2347904cd; >= 7988fb2c03c8cf9936f851ab19a6d21b3c3411c0, < 15fa028589c3a2545f0bff355eff06d5844196bf
LinuxLinux5.5

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98387?
In the Linux kernel, the following vulnerability has been resolved: s390/crypto: Fix skcipher_walk return code handling in aes_s390 The return codes from skcipher_walk_virt() were not properly checked before entering the processing loops in ecb_aes_crypt() and ctr_aes_crypt(). If skcipher_walk_virt() fails, the walk structure may be in an undefined state, and attempting to process data could lead to incorrect behavior or accessing uninitialized memory. Add proper return code checking to ensure correct handling of the walk initialization and walk advance and eventually return to the caller with that return code.
How severe is CVE-2026-98387?
Severity scoring for CVE-2026-98387 is pending analysis.
How do I fix CVE-2026-98387?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST