Stay Connected:

ELSA-2026-500238

ELSA-2026-500238 - Unbreakable Enterprise kernel security update

Type:SECURITY
Impact:IMPORTANT
Release Date:2026-09-01

Description


[5.4.17-2136.359.3]
- Partial revert of 'x86/alternatives: Optimize optimize_nops()' (Harshit Mogalapalli) [Orabug: 39866546]
- Revert 'x86/alternatives: Add alt_instr.flags' (Harshit Mogalapalli) [Orabug: 39866546]
- x86/bugs: Make Safe-RET robust against interrupt injection (Borislav Petkov (AMD)) [Orabug: 39784513] {CVE-2026-68480}
- x86/alternatives: Disable interrupts and sync when optimizing NOPs in place (Thomas Gleixner) [Orabug: 39784513]
- x86/alternative: Support relocations in alternatives (Peter Zijlstra) [Orabug: 39784513]
- x86/alternative: Make debug-alternative selective (Peter Zijlstra) [Orabug: 39784513]
- x86/alternatives: Add alt_instr.flags (Borislav Petkov (AMD)) [Orabug: 39784513]
- x86/asm: Provide ALTERNATIVE_3 (Peter Zijlstra) [Orabug: 39784513]
- x86/alternative: Optimize single-byte NOPs at an arbitrary position (Borislav Petkov) [Orabug: 39784513]
- x86/alternative: Align insn bytes vertically (Borislav Petkov) [Orabug: 39784513]
(H. Peter Anvin (Intel)) [Orabug: 39784513]
- x86/alternatives: Optimize optimize_nops() (Peter Zijlstra) [Orabug: 39784513]
- x86: Add insn_decode_kernel() (Peter Zijlstra) [Orabug: 39784513]
- x86/insn: Add an insn_decode() API (Borislav Petkov) [Orabug: 39784513]
- x86/alternative: Use ALTERNATIVE_TERNARY() in _static_cpu_has() (Juergen Gross) [Orabug: 39784513]
- x86/alternative: Support ALTERNATIVE_TERNARY (Juergen Gross) [Orabug: 39784513]
- x86/alternative: Merge include files (Juergen Gross) [Orabug: 39784513]
- x86/alternative: Drop unused feature parameter from ALTINSTR_REPLACEMENT() (Juergen Gross) [Orabug: 39784513]
- x86/insn: Support big endian cross-compiles (Martin Schwidefsky) [Orabug: 39784513]
- x86/tools: Use tools headers for instruction decoder selftests (Vasily Gorbik) [Orabug: 39784513]
- tools headers: Get tools's linux/compiler.h closer to the kernel's (Arnaldo Carvalho de Melo) [Orabug: 39784513]
- perf build: Allow nested externs to enable BUILD_BUG() usage (Vasily Gorbik) [Orabug: 39784513]
- objtool: Allow nested externs to enable BUILD_BUG() (Vasily Gorbik) [Orabug: 39784513]
- objtool: Make relocation in alternative handling arch dependent (Julien Thierry) [Orabug: 39784513]
- x86/alternatives: Add pr_fmt() to debug macros (Borislav Petkov) [Orabug: 39784513]
- tools headers: Adopt verbatim copy of compiletime_assert() from kernel sources (Arnaldo Carvalho de Melo) [Orabug: 39784513]
- x86/alternatives: Teach text_poke_bp() to emulate instructions (Peter Zijlstra) [Orabug: 39784513]
- tools headers: Synchronize linux/bits.h with the kernel sources (Arnaldo Carvalho de Melo) [Orabug: 39784513]
- net/rds: restrict RDS_INFO dumps to caller netns (Praveen Kumar Kannoju) [Orabug: 39681637]

[5.4.17-2136.359.2]
- net: tap: set skb->dev before parsing virtio net header in tap_get_user_xdp() (Dongli Zhang) [Orabug: 39558751]
- rds: tcp: fix uninit-value in __inet_bind (Tabrez Ahmed) [Orabug: 39668203]
- rds: tcp: cleanup if kmem_cache_alloc fails in rds_tcp_conn_alloc() (Sowmini Varadhan) [Orabug: 39668203]
- net/rds: harden rds_rm_size (Manjunath Patil) [Orabug: 39812534]
- rds: ib: move gc_count reset before free_percpu (Manjunath Patil) [Orabug: 39818510]
- rds: fix lfstack_pop_all sequence reset (Manjunath Patil) [Orabug: 39818510]

[5.4.17-2136.359.1]
- KVM: arm64: Make nVHE ASLR conditional on RANDOMIZE_BASE (David Brazdil) [Orabug: 39374251]
- arm64: kvm: Fix IDMAP overlap with HYP VA (Russell King) [Orabug: 39374251]
- arm64: KVM: Invoke compute_layout() before alternatives are applied (Sebastian Andrzej Siewior) [Orabug: 39374251]
- ocfs2: fix possible deadlock between unlink and dio_end_io_write (Joseph Qi) [Orabug: 39273589] {CVE-2026-31598}
- fs/ocfs2: fix comments mentioning i_mutex (hongnanli) [Orabug: 39273589]
- xfrm: defensively unhash xfrm_state lists in __xfrm_state_delete (Michal Kosiorek) [Orabug: 39460235] {CVE-2026-46116}
- net/rds: zero per-item info buffer before handing it to visitors (Michael Bommarito) [Orabug: 39638198] {CVE-2026-52995}
- uek: kabi: update x86_64 kABI files for a new symbol (Saeed Mirzamohammadi) [Orabug: 39651636]
- IB/rxe: use rxe_drop_ref to release rxe_pd (Wengang Wang) [Orabug: 39674348]
- IB/uverbs: enhance authorization checks for ib_uverbs_share_pd() (Wengang Wang) [Orabug: 39674348]
- fs/binfmt_elf: validate reserved VA ELF notes (Jianfeng Wang) [Orabug: 39681044]
- mm: preserve page-table boundaries for reserved VA mappings (Jianfeng Wang) [Orabug: 39681044]
- mm: enforce max_map_count for reserved VA mappings (Jianfeng Wang) [Orabug: 39681044]
- xen/ovmapi: terminate values passed to xenbus_write (Joe Jin) [Orabug: 39726701]
- xen/ovmapi: free queued events on release (Joe Jin) [Orabug: 39726701]
- xen/ovmapi: prevent duplicate app registration (Joe Jin) [Orabug: 39726701]
- xen/ovmapi: avoid raw user pointer access in get_next_event (Joe Jin) [Orabug: 39726701]
- xen/ovmapi: reject oversized posted event payloads (Joe Jin) [Orabug: 39726701]
- rds: Prevent kernel-infoleak in rds_notify_queue_get() (Peilin Ye) [Orabug: 39772651]
- rds: do not leak kernel memory to user land (Eric Dumazet) [Orabug: 39772651]

[5.4.17-2136.358.2]
- xfs: resample the data fork mapping after cycling ILOCK (Darrick J. Wong) [Orabug: 39776792] {CVE-2026-64600}
- net: Work around Marvell NIC TX stalls (Venkat Venkatsubra) [Orabug: 39765820]

[5.4.17-2136.358.1]
- KVM: x86: Fix shadow paging use-after-free due to unexpected role (Paolo Bonzini) [Orabug: 39673871] {CVE-2026-53359}
- KVM: x86: Fix shadow paging use-after-free due to unexpected GFN (Sean Christopherson) [Orabug: 39673871] {CVE-2026-46113}
- KVM: x86/MMU: Recursively zap nested TDP SPs when zapping last/only parent (Ben Gardon) [Orabug: 39673871]
- KVM: x86/mmu: Move flush logic from mmu_page_zap_pte() to FNAME(invlpg) (Sean Christopherson) [Orabug: 39673871]
- KVM: x86/mmu: pull call to drop_large_spte() into __link_shadow_page() (Paolo Bonzini) [Orabug: 39673871]
- KVM: x86/mmu: Passing up the error state of mmu_alloc_shadow_roots() (Like Xu) [Orabug: 39673871]
- KVM: MMU: load PDPTRs outside mmu_lock (Paolo Bonzini) [Orabug: 39673871]
- KVM: x86/mmu: Check PDPTRs before allocating PAE roots (Sean Christopherson) [Orabug: 39673871]
- KVM: x86/mmu: Always pass 0 for @quadrant when gptes are 8 bytes (David Matlack) [Orabug: 39673871]
- KVM: x86/mmu: Derive shadow MMU page role from parent (David Matlack) [Orabug: 39673871]
- KVM: X86: Remove useless code to set role.gpte_is_8_bytes when role.direct (Lai Jiangshan) [Orabug: 39673871]
- KVM: X86: Synchronize the shadow pagetable before link it (Lai Jiangshan) [Orabug: 39673871]
- KVM: X86: Fix missed remote tlb flush in rmap_write_protect() (Lai Jiangshan) [Orabug: 39673871]
- KVM: x86/mmu: Refactor shadow walk in __direct_map() to reduce indentation (Sean Christopherson) [Orabug: 39673871]
- KVM: x86/mmu: Stop passing 'direct' to mmu_alloc_root() (David Matlack) [Orabug: 39673871]
- KVM: x86/mmu: Use a bool for direct (David Matlack) [Orabug: 39673871]
- kvm: mmu: Replace unsigned with unsigned int for PTE access (Ben Gardon) [Orabug: 39673871]
- KVM: x86/mmu: Ensure MMU pages are available when allocating roots (Sean Christopherson) [Orabug: 39673871]
- KVM: x86/mmu: Allocate pae_root and lm_root pages in dedicated helper (Sean Christopherson) [Orabug: 39673871]
- KVM: x86/mmu: Allocate the lm_root before allocating PAE roots (Sean Christopherson) [Orabug: 39673871]
- KVM: x86/mmu: Capture 'mmu' in a local variable when allocating roots (Sean Christopherson) [Orabug: 39673871]
- KVM: x86/mmu: Alloc page for PDPTEs when shadowing 32-bit NPT with 64-bit (Sean Christopherson) [Orabug: 39673871]
- KVM: x86/mmu: Stash 'kvm' in a local variable in kvm_mmu_free_roots() (Sean Christopherson) [Orabug: 39673871]
- KVM: x86/mmu: Add a helper to consolidate root sp allocation (Sean Christopherson) [Orabug: 39673871]
- Revert 'net/rds: poll eq during user-reset' (Praveen Kumar Kannoju) [Orabug: 39659401]
- net/sched: act_pedit: fix action bind logic (Pedro Tammela) [Orabug: 39567287]
- net/sched: act_pedit: free pedit keys on bail from offset check (Pedro Tammela) [Orabug: 39567287]
- net/sched: fix pedit partial COW leading to page cache corruption (Rajat Gupta) [Orabug: 39567287] {CVE-2026-46331}
- net/sched: act_pedit: Parse L3 Header for L4 offset (Max Tottenham) [Orabug: 39567287]
- net/sched: act_pedit: rate limit datapath messages (Pedro Tammela) [Orabug: 39567287]
- net/sched: act_pedit: check static offsets a priori (Pedro Tammela) [Orabug: 39567287]
- net/sched: act_pedit: remove extra check for key type (Pedro Tammela) [Orabug: 39567287]
- net/sched: simplify tcf_pedit_act (Pedro Tammela) [Orabug: 39567287]
- net/sched: transition act_pedit to rcu and percpu stats (Pedro Tammela) [Orabug: 39567287]
- net/sched: act_pedit: use NLA_POLICY for parsing 'ex' keys (Pedro Tammela) [Orabug: 39567287]
- RDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv (hkbinbin) [Orabug: 39452261] {CVE-2026-46043}
- locking/rtmutex: Skip remove_waiter() when waiter is not enqueued (Davidlohr Bueso) [Orabug: 39426001] {CVE-2026-53163}
- rtmutex: Use waiter::task instead of current in remove_waiter() (Keenan Dong) [Orabug: 39426001] {CVE-2026-43499}
- ipv6: icmp: clear skb2->cb[] in ip6_err_gen_icmpv6_unreach() (Eric Dumazet) [Orabug: 39300930] {CVE-2026-43038}
- tracing/events: Expand global buffer for in-kernel event enables (Manjunath Patil) [Orabug: 38790406]
- net/mlx5: poll mlx5 eq during irq migration (Praveen Kumar Kannoju) [Orabug: 38776184]

[5.4.17-2136.357.3]
- net: skbuff: fix missing zerocopy reference in pskb_carve helpers (Minh Nguyen) [Orabug: 39619389] {CVE-2026-52943}

[5.4.17-2136.357.2]
- net: fix fanout UAF in packet_release() via NETDEV_UP race (Yochai Eisenrich) [Orabug: 39250953] {CVE-2026-31504}
- x86/kaslr: Recognize all ZONE_DEVICE users as physaddr consumers (Dan Williams) [Orabug: 39429802]
- x86/kaslr: Reduce KASLR entropy on most x86 systems (Balbir Singh) [Orabug: 39429802]
- net: tap: NULL pointer derefence in dev_parse_header_protocol when skb->dev is null (Cezar Bulinaru) [Orabug: 39526882] {CVE-2022-50073}
- arm64: errata: Mitigate TLBI errata on various Arm CPUs (Mark Rutland) [Orabug: 39548666] {CVE-2025-10263} {CVE-2026-53354}
- arm64: tlb: Add ARM64_WORKAROUND_REPEAT_TLBI_SYNC (Mark Rutland) [Orabug: 39548666]
- ARM: uek: Disable CONFIG_QCOM_FALKOR_ERRATUM_1003 (Boris Ostrovsky) [Orabug: 39548666]
- arm64: tlb: allow XZR argument to TLBI ops (Mark Rutland) [Orabug: 39548666]
- arm64: cputype: Add C1-Premium definitions (Mark Rutland) [Orabug: 39548666]
- arm64: cputype: Add C1-Ultra definitions (Mark Rutland) [Orabug: 39548666]
- ip6_tunnel: clear skb2->cb[] in ip4ip6_err() (Eric Dumazet) [Orabug: 39300926] {CVE-2026-43037}

[5.4.17-2136.357.1]
- batman-adv: hold claim backbone gateways by reference (Haoze Xie) [Orabug: 39262375] {CVE-2026-31657}
- scsi: fcoe: Reject FIP descriptors with zero fip_dlen in CVL walker (Michael Bommarito) [Orabug: 39446045] {CVE-2026-63890}
- scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd() (Michael Bommarito) [Orabug: 39446045] {CVE-2026-63888}
- scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf (Michael Bommarito) [Orabug: 39446045] {CVE-2026-63887}
- rds: Drop rds conn in connect worker if not in down state. (Rohit Nair) [Orabug: 39152239]

[5.4.17-2136.356.4.1]
- smb: client: reject userspace cifs.spnego descriptions (Asim Viladi Oglu Manizada) [Orabug: 39463669] {CVE-2026-46243}

[5.4.17-2136.356.4]
- tun: free page on build_skb failure in tun_xdp_one() (Weiming Shi) [Orabug: 39429147] {CVE-2026-46322}
- tap: free page on error paths in tap_get_user_xdp() (Weiming Shi) [Orabug: 39429147] {CVE-2026-46320}
- tun: free page on short-frame rejection in tun_xdp_one() (Weiming Shi) [Orabug: 39429147] {CVE-2026-46321}


Related CVEs


CVE-2026-31598
CVE-2026-46116
CVE-2026-52995
CVE-2026-68480

Updated Packages


Release/ArchitectureFilenamesha256Superseded By AdvisoryChannel Label
Oracle Linux 7 (x86_64) kernel-uek-5.4.17-2136.359.3.el7uek.src.rpme5aa8b2de4551a69334caed39dd3064f49e6360b2335f83d621c1ffac3fb0e69-ol7_x86_64_UEKR6_ELS
kernel-uek-5.4.17-2136.359.3.el7uek.x86_64.rpm5e50bb50beca07269e2b8e7bf5fda0e55ba950c03d992cd5adaf0f73b337b19f-ol7_x86_64_UEKR6_ELS
kernel-uek-container-5.4.17-2136.359.3.el7uek.x86_64.rpm10d4e67ba976dc8e1a30035e5dcefd0e66bdeb02a8ccf017ddbdd8c04521dd18-ol7_x86_64_UEKR6_ELS
kernel-uek-container-debug-5.4.17-2136.359.3.el7uek.x86_64.rpma7930174ed9c77d556044cd709c795d6c21ee0a04a29ef73383d97f311660d4c-ol7_x86_64_UEKR6_ELS
kernel-uek-debug-5.4.17-2136.359.3.el7uek.x86_64.rpmaef27186e1e087ee3de43b90cfb6853f8c3df60e473564ed1eef456df4a081ab-ol7_x86_64_UEKR6_ELS
kernel-uek-debug-devel-5.4.17-2136.359.3.el7uek.x86_64.rpm85a0f443c2d0d00e89231e8fccbecb89e21faf0f5552d240feb8259e2a67744c-ol7_x86_64_UEKR6_ELS
kernel-uek-devel-5.4.17-2136.359.3.el7uek.x86_64.rpm75083ec5f16f5dbe863aea87a4fcca22f098acc195d0844026c20d96a45ab074-ol7_x86_64_UEKR6_ELS
kernel-uek-doc-5.4.17-2136.359.3.el7uek.noarch.rpmc15bb7f18431d5102dd25fa340d4fc4da063464ed038ab2c2bf9e4da0a75b35b-ol7_x86_64_UEKR6_ELS
kernel-uek-tools-5.4.17-2136.359.3.el7uek.x86_64.rpm94b94e50f517636dc0cef83b197152f1611ea296cf6187b1fbb6233782a2a182-ol7_x86_64_UEKR6_ELS
Oracle Linux 8 (aarch64) kernel-uek-5.4.17-2136.359.3.el8uek.src.rpm0ceb26efeaf8cc80e58af3ecbb858cc691055908b91d8f7d0884d5504f4562c4-ol8_aarch64_baseos_latest
kernel-uek-5.4.17-2136.359.3.el8uek.src.rpm0ceb26efeaf8cc80e58af3ecbb858cc691055908b91d8f7d0884d5504f4562c4-ol8_aarch64_u10_baseos_patch
kernel-uek-5.4.17-2136.359.3.el8uek.aarch64.rpmea793d2bfed7141f8ffe9a5e81feb0fdb9d4c3f6f05d781e4f5f9663b8cc6e72-ol8_aarch64_baseos_latest
kernel-uek-5.4.17-2136.359.3.el8uek.aarch64.rpmea793d2bfed7141f8ffe9a5e81feb0fdb9d4c3f6f05d781e4f5f9663b8cc6e72-ol8_aarch64_u10_baseos_patch
kernel-uek-debug-5.4.17-2136.359.3.el8uek.aarch64.rpm54eac27636884907ab0993830d629e993584e55b779234620773808c46e3fa2d-ol8_aarch64_baseos_latest
kernel-uek-debug-5.4.17-2136.359.3.el8uek.aarch64.rpm54eac27636884907ab0993830d629e993584e55b779234620773808c46e3fa2d-ol8_aarch64_u10_baseos_patch
kernel-uek-debug-devel-5.4.17-2136.359.3.el8uek.aarch64.rpm6959800625c4fd0246081ee69e4ee968cce16c2546492493a4137663bc96ba1b-ol8_aarch64_baseos_latest
kernel-uek-debug-devel-5.4.17-2136.359.3.el8uek.aarch64.rpm6959800625c4fd0246081ee69e4ee968cce16c2546492493a4137663bc96ba1b-ol8_aarch64_u10_baseos_patch
kernel-uek-devel-5.4.17-2136.359.3.el8uek.aarch64.rpma2d2137f3eb7a130aeba414019db361e57ce65ed8e676badf58c350629e0a508-ol8_aarch64_baseos_latest
kernel-uek-devel-5.4.17-2136.359.3.el8uek.aarch64.rpma2d2137f3eb7a130aeba414019db361e57ce65ed8e676badf58c350629e0a508-ol8_aarch64_u10_baseos_patch
kernel-uek-doc-5.4.17-2136.359.3.el8uek.noarch.rpmf2f29cd7259890e68900ed0ebb2cd09727d6e4c3f8df4011daa52db7a73943f0-ol8_aarch64_baseos_latest
kernel-uek-doc-5.4.17-2136.359.3.el8uek.noarch.rpmf2f29cd7259890e68900ed0ebb2cd09727d6e4c3f8df4011daa52db7a73943f0-ol8_aarch64_u10_baseos_patch
Oracle Linux 8 (x86_64) kernel-uek-5.4.17-2136.359.3.el8uek.src.rpm0ceb26efeaf8cc80e58af3ecbb858cc691055908b91d8f7d0884d5504f4562c4-ol8_x86_64_UEKR6
kernel-uek-5.4.17-2136.359.3.el8uek.x86_64.rpmd2d202867bba71412547f8295a615041c1fab380a744f91a3b575d6ca86e38fb-ol8_x86_64_UEKR6
kernel-uek-container-5.4.17-2136.359.3.el8uek.x86_64.rpm03299e558f2a86fc99318410e606a487d7f7e30239a7f722208d4f2201e6380b-ol8_x86_64_UEKR6
kernel-uek-container-debug-5.4.17-2136.359.3.el8uek.x86_64.rpm0f6bc2d7e071aa4b9e544dc01dda977103c9465e5b900e85f1d05999c93cd80c-ol8_x86_64_UEKR6
kernel-uek-debug-5.4.17-2136.359.3.el8uek.x86_64.rpm22157eb9087798ee9dce3c4ca6831b07b2d3d538888625138bf4889cf9888948-ol8_x86_64_UEKR6
kernel-uek-debug-devel-5.4.17-2136.359.3.el8uek.x86_64.rpm55c199dd42c2555f64bd2ec3a432352b8e3628a0760a26a3918c9a479446f366-ol8_x86_64_UEKR6
kernel-uek-devel-5.4.17-2136.359.3.el8uek.x86_64.rpm046fe9c8faff9f46b8af621848bcbd58f110f6afe4b2ec32d48edf2f9e2fcc59-ol8_x86_64_UEKR6
kernel-uek-doc-5.4.17-2136.359.3.el8uek.noarch.rpmf2f29cd7259890e68900ed0ebb2cd09727d6e4c3f8df4011daa52db7a73943f0-ol8_x86_64_UEKR6



This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team

software.hardware.complete
Subscribe | Careers | Contact Us | Legal Notices | Terms of Use | Your Privacy Rights