CVE-2026-97590
In the Linux kernel, the following vulnerability has been resolved: s390/crypto: Fix missing scrub of temp buffers with PAES algorithm In function ctr_paes_do_crypt() there is a buffer used to process remaining bytes < AES_BLOCK_SIZE. This buffer was not scrubbed and thus could lead to expose of unwanted data. Rework the code to explicitly scrub the buffer at the end of the function to avoid exposure of maybe sensitive data. In function __xts_2keys_prep_param() change the existing scrub to clean the whole param block instead of just the key field.
Affected versions
Linux kernel versions
6.16
and later are affected. Fixed in
6.18.53,
7.2.7,
7.3-rc3
and their respective stable series.
References
3 totalFrequently asked questions
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What is CVE-2026-97590?
CVE-2026-97590 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.16 onward and has been patched in 6.18.53, 7.2.7 and 7.3-rc3. CVE-2026-97590 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-2026-97590?
Yes. CVE-2026-97590 has been patched. Fixed versions include 6.18.53, 7.2.7 and 7.3-rc3. If you are running Linux kernel 6.16 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-97590 actively exploited?
No. CVE-2026-97590 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.