CVE-2026-97590 PUBLISHED

s390/crypto: Fix missing scrub of temp buffers with PAES algorithm

Assigner: Linux
Reserved: 24.09.2026 Published: 25.09.2026 Updated: 25.09.2026

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.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 6cd87cb5ef6ca50ae17c371482ceaab1d635e232 to 7d1456d54b3c784cc2917c219a528092cefe30cd (excl.)
  • affected from 6cd87cb5ef6ca50ae17c371482ceaab1d635e232 to d7159d2132e9aa51af7acb51c6742d9b30f987b3 (excl.)
  • affected from 6cd87cb5ef6ca50ae17c371482ceaab1d635e232 to 19a218b46b2471d370c11fb52040f36ac8d05d23 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.16 is affected
  • unaffected from 0 to 6.16 (excl.)
  • unaffected from 6.18.53 to 6.18.* (incl.)
  • unaffected from 7.2.7 to 7.2.* (incl.)
  • unaffected from 7.3-rc3 to * (incl.)

References