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High ELSA-2026-72623 9 CVEs

Important: kernel security, bug fix, and enhancement update (Oracle Linux 9)

Published Sep 29, 2026 · Updated Sep 29, 2026

Summary

[5.14.0-687.53.1]
- Disable UKI signing [Orabug: 36571828]
- Update Oracle Linux certificates (Kevin Lyons)
- Disable signing for aarch64 (Ilya Okomin)
- Oracle Linux RHCK Module Signing Key was added to the kernel trusted keys list (olkmod_signing_key.pem) [Orabug: 29539237]
- Update x509.genkey [Orabug: 24817676]
- Conflict with shim-ia32 and shim-x64 <= 15.3-1.0.5]
- Remove upstream reference during boot (Kevin Lyons) [Orabug: 34729535]
- Add Oracle Linux IMA certificates
- Add new Oracle Linux Driver Signing (key 1) certificate [Orabug: 37985764]

[5.14.0-687.53.1]
- arm64: tlb: Flush walk cache when unsharing PMD tables (Rafael Aquini) [RHEL-259312] {CVE-2026-63875}
- perf: Reject exited events as group leaders (Anubhav Shelat) [RHEL-258817] {CVE-2026-74753}
- perf/core: Detach event groups during remove_on_exec (Anubhav Shelat) [RHEL-250504] {CVE-2026-64556}
- ext4: fix e4b bitmap inconsistency reports (Lukas Herbolt) [RHEL-225944] {CVE-2026-45942}
- crypto: af_alg - Cap AEAD AD length to 0x80000000 (CKI Backport Bot) [RHEL-259061] {CVE-2026-52972}
- fhandle: fix UAF due to unlocked ->mnt_ns read in may_decode_fh() (Abhi Das) [RHEL-231391] {CVE-2026-53341}
- crypto: testmgr - block Crypto API xxhash64 in FIPS mode (Vladislav Dronov) [RHEL-256437]
- crypto: tegra - fix rctx->cryptlen calculation in tegra_gcm_do_one_req() (CKI Backport Bot) [RHEL-254308] {CVE-2026-80522}
- RDMA/rxe: Fix iova-to-va conversion for MR page sizes != PAGE_SIZE (Kamal Heib) [RHEL-230788] {CVE-2026-46325}
- RDMA/rxe: Remove unused page_offset member (Kamal Heib) [RHEL-230788]
- RDMA/rxe: Remove redundant assignment to variable page_offset (Kamal Heib) [RHEL-230788]
- Revert 'RDMA/rxe: RHEL-only revert for page size vars in rxe' (Kamal Heib) [RHEL-230788]
- KVM: s390: selftests: Add IRQ routing address offset tests (Christoph Schlameuss) [RHEL-188656]
- KVM: s390: Limit adapter indicator access to mapped page (Christoph Schlameuss) [RHEL-188656]
- RDMA/siw: Reject MPA FPDU length underflow before signed receive math (CKI Backport Bot) [RHEL-232566] {CVE-2026-64102}
- rxrpc: Fix rxrpc_input_call_event() to only unshare DATA packets (Marc Dionne) [RHEL-179563]
- rxrpc: Fix potential UAF after skb_unshare() failure (Marc Dionne) [RHEL-179563] {CVE-2026-45998}

Fixed packages 29

ReleasePackageFixed in
Oracle Linux · 9 kernel 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 kernel-abi-stablelists 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 kernel-core 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 kernel-cross-headers 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 kernel-debug 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 kernel-debug-core 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 kernel-debug-devel 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 kernel-debug-devel-matched 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 kernel-debug-modules 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 kernel-debug-modules-core 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 kernel-debug-modules-extra 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 kernel-debug-uki-virt 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 kernel-devel 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 kernel-devel-matched 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 kernel-doc 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 kernel-headers 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 kernel-modules 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 kernel-modules-core 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 kernel-modules-extra 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 kernel-tools 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 kernel-tools-libs 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 kernel-tools-libs-devel 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 kernel-uki-virt 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 kernel-uki-virt-addons 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 libperf 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 perf 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 python3-perf 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 rtla 0:5.14.0-687.53.1.el9_8
Oracle Linux · 9 rv 0:5.14.0-687.53.1.el9_8

Vulnerabilities 9

  • Critical 9.8

    RDMA/rxe: Fix iova-to-va conversion for MR page sizes != PAGE_SIZE

    In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix iova-to-va conversion for MR page sizes != PAGE_SIZE The current implementation incorrectly handles memory regions (MRs) with page sizes different from the system PAGE_SIZE. The…

  • Critical 9.8

    RDMA/siw: Reject MPA FPDU length underflow before signed receive math

    In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Reject MPA FPDU length underflow before signed receive math A malicious connected siw peer can send an iWARP FPDU whose MPA length field (c_hdr->mpa_len, 16 bit big-endian, peer-con…

  • High 7.8

    ext4: fix e4b bitmap inconsistency reports

    In the Linux kernel, the following vulnerability has been resolved: ext4: fix e4b bitmap inconsistency reports A bitmap inconsistency issue was observed during stress tests under mixed huge-page workloads. Ext4 reported multiple e4b bitmap check failures like…

  • High 7.8

    fhandle: fix UAF due to unlocked ->mnt_ns read in may_decode_fh()

    In the Linux kernel, the following vulnerability has been resolved: fhandle: fix UAF due to unlocked ->mnt_ns read in may_decode_fh() may_decode_fh() accesses mount::mnt_ns without holding any locks; that means the mount can concurrently be unmounted, and the…

  • High 7.8

    arm64: tlb: Flush walk cache when unsharing PMD tables

    In the Linux kernel, the following vulnerability has been resolved: arm64: tlb: Flush walk cache when unsharing PMD tables When huge_pmd_unshare() is called to unshare a PMD table, the tlb_unshare_pmd_ptdesc() function sets tlb->unshared_tables=true but the a…

  • High 7.8

    perf/core: Detach event groups during remove_on_exec

    In the Linux kernel, the following vulnerability has been resolved: perf/core: Detach event groups during remove_on_exec perf_event_remove_on_exec() removes events by calling perf_event_exit_event(). For top-level events, this removes the event from the conte…

  • High 7.8

    perf: Reject exited events as group leaders

    In the Linux kernel, the following vulnerability has been resolved: perf: Reject exited events as group leaders perf_event_remove_on_exec() sets remove-on-exec events to the EXIT state and detaches their group relationships. The event's file descriptor can re…

  • High 7.8

    crypto: tegra - fix rctx->cryptlen calculation in tegra_gcm_do_one_req()

    In the Linux kernel, the following vulnerability has been resolved: crypto: tegra - fix rctx->cryptlen calculation in tegra_gcm_do_one_req() Perform rctx->cryptlen calculation in tegra_gcm_do_one_req() the same way it is done in tegra_ccm_crypt_init(). The cu…

  • High 7.0

    crypto: af_alg - Cap AEAD AD length to 0x80000000

    In the Linux kernel, the following vulnerability has been resolved: crypto: af_alg - Cap AEAD AD length to 0x80000000 In order to prevent arithmetic overflows when checking the TX buffer size, cap the associated data length to 0x80000000.