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.
Affected versions
Linux kernel versions
5.5
and later are affected. Fixed in
6.12.111,
6.18.53,
7.2.7,
7.3-rc3
and their respective stable series.
References
4 totalFrequently asked questions
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What is CVE-2026-98387?
CVE-2026-98387 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.5 onward and has been patched in 6.12.111, 6.18.53, 7.2.7 and others. CVE-2026-98387 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-98387?
Yes. CVE-2026-98387 has been patched. Fixed versions include 6.12.111, 6.18.53, 7.2.7 and others. If you are running Linux kernel 5.5 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-98387 actively exploited?
No. CVE-2026-98387 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.