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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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Redhat_linux | — | No solution exists | Oct 19, 2026 | Oct 14, 2026 |
| Ubuntu | — | Upgrade linux-oracleUpgrade linuxUpgrade linux-riscv-7.0Upgrade linux-ibmUpgrade linux-hwe-7.0Upgrade linux-gcpUpgrade linux-oem-7.0Upgrade linux-awsUpgrade linux-riscv | Nov 3, 2026 | Oct 14, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 22, 2026 | Oct 14, 2026 |
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