ELBA-2026-500164

ELBA-2026-500164 - Unbreakable Enterprise kernel bug fix update

Type:	BUG
Impact:	NA
Release Date:	2026-08-11

Description

[5.4.17-2136.358.2.1]
- Partial revert of 'x86/alternatives: Optimize optimize_nops()' (Harshit Mogalapalli) [Orabug: 39855738]
- Revert 'x86/alternatives: Add alt_instr.flags' (Harshit Mogalapalli) [Orabug: 39855738]

[5.4.17-2136.358.2.0.1]
- x86/bugs: Make Safe-RET robust against interrupt injection (Borislav Petkov (AMD)) [Orabug: 39832992] {CVE-2026-68480}
- x86/alternatives: Disable interrupts and sync when optimizing NOPs in place (Thomas Gleixner) [Orabug: 39832992]
- x86/alternative: Support relocations in alternatives (Peter Zijlstra) [Orabug: 39832992]
- x86/alternative: Make debug-alternative selective (Peter Zijlstra) [Orabug: 39832992]
- x86/alternatives: Add alt_instr.flags (Borislav Petkov (AMD)) [Orabug: 39832992]
- x86/asm: Provide ALTERNATIVE_3 (Peter Zijlstra) [Orabug: 39832992]
- x86/alternative: Optimize single-byte NOPs at an arbitrary position (Borislav Petkov) [Orabug: 39832992]
- x86/alternative: Align insn bytes vertically (Borislav Petkov) [Orabug: 39832992]
(H. Peter Anvin (Intel)) [Orabug: 39832992]
- x86/alternatives: Optimize optimize_nops() (Peter Zijlstra) [Orabug: 39832992]
- x86: Add insn_decode_kernel() (Peter Zijlstra) [Orabug: 39832992]
- x86/insn: Add an insn_decode() API (Borislav Petkov) [Orabug: 39832992]
- x86/alternative: Use ALTERNATIVE_TERNARY() in _static_cpu_has() (Juergen Gross) [Orabug: 39832992]
- x86/alternative: Support ALTERNATIVE_TERNARY (Juergen Gross) [Orabug: 39832992]
- x86/alternative: Merge include files (Juergen Gross) [Orabug: 39832992]
- x86/alternative: Drop unused feature parameter from ALTINSTR_REPLACEMENT() (Juergen Gross) [Orabug: 39832992]
- x86/insn: Support big endian cross-compiles (Martin Schwidefsky) [Orabug: 39832992]
- x86/tools: Use tools headers for instruction decoder selftests (Vasily Gorbik) [Orabug: 39832992]
- tools headers: Get tools's linux/compiler.h closer to the kernel's (Arnaldo Carvalho de Melo) [Orabug: 39832992]
- perf build: Allow nested externs to enable BUILD_BUG() usage (Vasily Gorbik) [Orabug: 39832992]
- objtool: Allow nested externs to enable BUILD_BUG() (Vasily Gorbik) [Orabug: 39832992]
- objtool: Make relocation in alternative handling arch dependent (Julien Thierry) [Orabug: 39832992]
- x86/alternatives: Add pr_fmt() to debug macros (Borislav Petkov) [Orabug: 39832992]
- tools headers: Adopt verbatim copy of compiletime_assert() from kernel sources (Arnaldo Carvalho de Melo) [Orabug: 39832992]
- x86/alternatives: Teach text_poke_bp() to emulate instructions (Peter Zijlstra) [Orabug: 39832992]
- tools headers: Synchronize linux/bits.h with the kernel sources (Arnaldo Carvalho de Melo) [Orabug: 39832992]
- net: tap: set skb->dev before parsing virtio net header in tap_get_user_xdp() (Dongli Zhang) [Orabug: 39832997]

[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]
- KVM: x86: Fix shadow paging use-after-free due to unexpected GFN (Sean Christopherson) [Orabug: 39673871]
- 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]
- 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}
- 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]
- scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd() (Michael Bommarito) [Orabug: 39446045]
- scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf (Michael Bommarito) [Orabug: 39446045]
- 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]
- tap: free page on error paths in tap_get_user_xdp() (Weiming Shi) [Orabug: 39429147]
- tun: free page on short-frame rejection in tun_xdp_one() (Weiming Shi) [Orabug: 39429147]

[5.4.17-2136.356.3]
- ptrace: slightly saner 'get_dumpable()' logic (Linus Torvalds) [Orabug: 39384275,39391459] {CVE-2026-46333}
- net: skbuff: propagate shared-frag marker through frag-transfer helpers (Hyunwoo Kim) [Orabug: 39368828,39441326] {CVE-2026-43503,CVE-2026-46300}
- net: skbuff: preserve shared-frag marker during coalescing (William Bowling) [Orabug: 39368828] {CVE-2026-46300}

Updated Packages

Release/Architecture	Filename	sha256	Superseded By Advisory	Channel Label
Oracle Linux 7 (x86_64)	kernel-uek-5.4.17-2136.358.2.1.el7uek.src.rpm	94aec6e43a8a55cc3f9d63095a11168f6c4b8427d8ac5bf9e6fc3f8ef3226a69	-	ol7_x86_64_UEKR6_ELS
	kernel-uek-5.4.17-2136.358.2.1.el7uek.x86_64.rpm	1ee8faa7b7f1a82942ffd2e8c599b59b65691bd15055aaec8dc208cb8ae8a4ce	-	ol7_x86_64_UEKR6_ELS
	kernel-uek-container-5.4.17-2136.358.2.1.el7uek.x86_64.rpm	aefc83491169f04899a7559d27a6d6e250adf67a20d003996dd809fc4956e423	-	ol7_x86_64_UEKR6_ELS
	kernel-uek-container-debug-5.4.17-2136.358.2.1.el7uek.x86_64.rpm	3c40de6b8b39a277a6017d942ac0d5d1200ac2d28ac21cb46a0585090c025ddd	-	ol7_x86_64_UEKR6_ELS
	kernel-uek-debug-5.4.17-2136.358.2.1.el7uek.x86_64.rpm	21d9f045da431d1b3c26a7539645ea56dac28973b5c272fe14638a28be08958e	-	ol7_x86_64_UEKR6_ELS
	kernel-uek-debug-devel-5.4.17-2136.358.2.1.el7uek.x86_64.rpm	242653bb1ad2c638dbb29ff54ca4cdf0579dcc4e1a89e311765ba9bd4788e4af	-	ol7_x86_64_UEKR6_ELS
	kernel-uek-devel-5.4.17-2136.358.2.1.el7uek.x86_64.rpm	d48c833286b68762b9b0812350a946ac79c84caa58a6b9cfdcdc49ece9e7eee6	-	ol7_x86_64_UEKR6_ELS
	kernel-uek-doc-5.4.17-2136.358.2.1.el7uek.noarch.rpm	9a8b0cd22be3fa94bed47862812db87222b7883cb53407a0a47ba032ab61f57c	-	ol7_x86_64_UEKR6_ELS
	kernel-uek-tools-5.4.17-2136.358.2.1.el7uek.x86_64.rpm	9c02bb9aa146188832f4fc2dd240526db2f2570f0b477c1b47685872165e6b3a	-	ol7_x86_64_UEKR6_ELS
Oracle Linux 8 (aarch64)	kernel-uek-5.4.17-2136.358.2.1.el8uek.src.rpm	b18505fb22565cee26e872adc900bd90576634d3645545ddeb22c666951c13b0	-	ol8_aarch64_baseos_latest
	kernel-uek-5.4.17-2136.358.2.1.el8uek.src.rpm	b18505fb22565cee26e872adc900bd90576634d3645545ddeb22c666951c13b0	-	ol8_aarch64_u10_baseos_patch
	kernel-uek-5.4.17-2136.358.2.1.el8uek.aarch64.rpm	839044b230edc9b1f27e0bb062c90e0cd0dbfc775d88077195cd524bbde88a4e	-	ol8_aarch64_baseos_latest
	kernel-uek-5.4.17-2136.358.2.1.el8uek.aarch64.rpm	839044b230edc9b1f27e0bb062c90e0cd0dbfc775d88077195cd524bbde88a4e	-	ol8_aarch64_u10_baseos_patch
	kernel-uek-debug-5.4.17-2136.358.2.1.el8uek.aarch64.rpm	3348c8028da96e257d0556b5c8dd8dd3519699a42a04a8b66ec91507b94c82ec	-	ol8_aarch64_baseos_latest
	kernel-uek-debug-5.4.17-2136.358.2.1.el8uek.aarch64.rpm	3348c8028da96e257d0556b5c8dd8dd3519699a42a04a8b66ec91507b94c82ec	-	ol8_aarch64_u10_baseos_patch
	kernel-uek-debug-devel-5.4.17-2136.358.2.1.el8uek.aarch64.rpm	f4646ab919d180afb9302119111cf4a54cd7b323c5e570017a4c8c6a6bc8ab02	-	ol8_aarch64_baseos_latest
	kernel-uek-debug-devel-5.4.17-2136.358.2.1.el8uek.aarch64.rpm	f4646ab919d180afb9302119111cf4a54cd7b323c5e570017a4c8c6a6bc8ab02	-	ol8_aarch64_u10_baseos_patch
	kernel-uek-devel-5.4.17-2136.358.2.1.el8uek.aarch64.rpm	c51e366a5151c13b3fd85f446879770830d3d504dca145169391f09c89ec2460	-	ol8_aarch64_baseos_latest
	kernel-uek-devel-5.4.17-2136.358.2.1.el8uek.aarch64.rpm	c51e366a5151c13b3fd85f446879770830d3d504dca145169391f09c89ec2460	-	ol8_aarch64_u10_baseos_patch
	kernel-uek-doc-5.4.17-2136.358.2.1.el8uek.noarch.rpm	34763e9a450af17ff712d0cb93ca3e1ba809179f957217973d676b5a0d9d30f3	-	ol8_aarch64_baseos_latest
	kernel-uek-doc-5.4.17-2136.358.2.1.el8uek.noarch.rpm	34763e9a450af17ff712d0cb93ca3e1ba809179f957217973d676b5a0d9d30f3	-	ol8_aarch64_u10_baseos_patch
Oracle Linux 8 (x86_64)	kernel-uek-5.4.17-2136.358.2.1.el8uek.src.rpm	b18505fb22565cee26e872adc900bd90576634d3645545ddeb22c666951c13b0	-	ol8_x86_64_UEKR6
	kernel-uek-5.4.17-2136.358.2.1.el8uek.x86_64.rpm	2990ea5d5bb2094ade0eaa7bef82b8ecb56345d6afd0d2e864722d0a7bf56b93	-	ol8_x86_64_UEKR6
	kernel-uek-container-5.4.17-2136.358.2.1.el8uek.x86_64.rpm	c8e95e9e94bc1a05f25627ad9efdb0226371f297b1953bc5855e3e7827962d01	-	ol8_x86_64_UEKR6
	kernel-uek-container-debug-5.4.17-2136.358.2.1.el8uek.x86_64.rpm	dbf78cb2a83ae67d3906733db96a3977109c18ad83e87bbcc290b3cc4fc04467	-	ol8_x86_64_UEKR6
	kernel-uek-debug-5.4.17-2136.358.2.1.el8uek.x86_64.rpm	7715bec63307685e6b41fe2a20c88f7e3adc94e8fec582834e3953fb7717d03d	-	ol8_x86_64_UEKR6
	kernel-uek-debug-devel-5.4.17-2136.358.2.1.el8uek.x86_64.rpm	33c018da74fed4e853704b41024e4f30b70666c702b3f5a769c8ddae27d22763	-	ol8_x86_64_UEKR6
	kernel-uek-devel-5.4.17-2136.358.2.1.el8uek.x86_64.rpm	7dafdad35c71cd9b28cea27b33000c5a4082cbf2c81de6cbe540f6550ffe83af	-	ol8_x86_64_UEKR6
	kernel-uek-doc-5.4.17-2136.358.2.1.el8uek.noarch.rpm	34763e9a450af17ff712d0cb93ca3e1ba809179f957217973d676b5a0d9d30f3	-	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