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s390 updates for 7.2-rc7

GIT PULL Merged Vasily Gorbik 2 participants 2 messages Aug 9 s390

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Vasily Gorbik

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Hello Linus,

please pull s390 fixes for 7.2-rc7.

Thank you,
Vasily

The following changes since commit 01476391aecef36a3b789ee844357b22fbc90665:

s390/zcrypt: Fix missing mem scrub at clear key import in cca_clr2cipherkey() (2026-07-31 13:31:20 +0200)

are available in the Git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git tags/s390-7.2-7

for you to fetch changes up to eb363254472493e3458156fc11fd56dca92f4333:

s390/zcrypt: Pad trailing CCA or EP11 message with zeros (2026-08-05 15:12:22 +0200)

----------------------------------------------------------------
s390 updates for 7.2-rc7

- Fix potential uninitialized memory reads and buffer overflows from malformed zcrypt CCA and EP11 requests by properly validating lengths and payloads

- Fix possible out of bounds accesses in zcrypt EP11 domain handling by replacing fixed payload layout assumptions with parsing ASN.1 fields with bounds checks

- Fix zcrypt CCA and EP11 request and reply buffer allocations missing required 4-byte padding, and scrub the full allocation on release

- Fix zcrypt CCA and EP11 messages leaking up to 3 uninitialized bytes of memory by zeroing trailing alignment padding

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Harald Freudenberger (5):
s390/zcrypt: Fix CPRB memory allocation in zcrypt misc code s390/zcrypt: Improve CCA CPRB length and overflow checks s390/zcrypt: Improve EP11 CPRB length and overflow checks s390/zcrypt: Improve EP11 CPRB domain handling with ASN.1 parsing s390/zcrypt: Pad trailing CCA or EP11 message with zeros

 drivers/s390/crypto/zcrypt_ccamisc.c  |  20 +-
 drivers/s390/crypto/zcrypt_ep11misc.c |  16 +-
 drivers/s390/crypto/zcrypt_msgtype6.c | 364 +++++++++++++++++++++++-----------
 3 files changed, 277 insertions(+), 123 deletions(-)