[El-errata] ELSA-2026-50255 Important: Oracle Linux 8 Unbreakable Enterprise kernel security update: Copy Fail

[Errata Announcements for Oracle Linux]

Oracle Linux Security Advisory ELSA-2026-50255

http://linux.oracle.com/errata/ELSA-2026-50255.html

The following updated rpms for Oracle Linux 8 have been uploaded to the Unbreakable Linux Network:

x86_64:
kernel-uek-5.4.17-2136.354.4.2.el8uek.x86_64.rpm
kernel-uek-container-5.4.17-2136.354.4.2.el8uek.x86_64.rpm
kernel-uek-container-debug-5.4.17-2136.354.4.2.el8uek.x86_64.rpm
kernel-uek-debug-5.4.17-2136.354.4.2.el8uek.x86_64.rpm
kernel-uek-debug-devel-5.4.17-2136.354.4.2.el8uek.x86_64.rpm
kernel-uek-devel-5.4.17-2136.354.4.2.el8uek.x86_64.rpm
kernel-uek-doc-5.4.17-2136.354.4.2.el8uek.noarch.rpm


SRPMS:
http://oss.oracle.com/ol8/SRPMS-updates/kernel-uek-5.4.17-2136.354.4.2.el8uek.src.rpm

Related CVEs:

CVE-2026-31431




Description of changes:

[5.4.17-2136.354.4.2]
- crypto: algif_aead - Fix minimum RX size check for decryption (Herbert Xu)  [Orabug: 39292250]
- crypto: af_alg - Fix page reassignment overflow in af_alg_pull_tsgl (Herbert Xu)  [Orabug: 39292250]
- crypto: authencesn - Fix src offset when decrypting in-place (Herbert Xu)  [Orabug: 39292250]
- crypto: authencesn - Do not place hiseq at end of dst for out-of-place decryption (Herbert Xu)  [Orabug: 39292250]
- crypto: authenc - use memcpy_sglist() instead of null skcipher (Eric Biggers)  [Orabug: 39292250]
- crypto: algif_aead - snapshot IV for async AEAD requests (Douya Le)  [Orabug: 39292250]
- crypto: algif_aead - Revert to operating out-of-place (Herbert Xu)  [Orabug: 39292250]
- crypto: algif_aead - use memcpy_sglist() instead of null skcipher (Eric Biggers)  [Orabug: 39292250]  {CVE-2026-31431}
- crypto: scatterwalk - Backport memcpy_sglist() (Eric Biggers)  [Orabug: 39292250]
- crypto: doc - fix kernel-doc notation in chacha.c and af_alg.c (Randy Dunlap)  [Orabug: 39292250]
- x86/CPU: Fix FPDSS on Zen1 (Siddh Raman Pant)  [Orabug: 39292236]