Oracle alert ELSA-2026-500136 (kernel)
| From: | Errata Announcements for Oracle Linux via El-errata <el-errata@oss.oracle.com> | |
| To: | el-errata@oss.oracle.com | |
| Subject: | [El-errata] ELSA-2026-500136 Important: Oracle Linux 7 Unbreakable Enterprise kernel security update | |
| Date: | Thu, 06 Aug 2026 22:51:02 -0700 | |
| Message-ID: | <mailman.456.1786081876.18.el-errata@oss.oracle.com> |
Oracle Linux Security Advisory ELSA-2026-500136 http://linux.oracle.com/errata/ELSA-2026-500136.html The following updated rpms for Oracle Linux 7 have been uploaded to the Unbreakable Linux Network: x86_64: kernel-uek-5.4.17-2136.358.2.0.1.el7uek.x86_64.rpm kernel-uek-container-5.4.17-2136.358.2.0.1.el7uek.x86_64.rpm kernel-uek-container-debug-5.4.17-2136.358.2.0.1.el7uek.x86_64.rpm kernel-uek-debug-5.4.17-2136.358.2.0.1.el7uek.x86_64.rpm kernel-uek-debug-devel-5.4.17-2136.358.2.0.1.el7uek.x86_64.rpm kernel-uek-devel-5.4.17-2136.358.2.0.1.el7uek.x86_64.rpm kernel-uek-doc-5.4.17-2136.358.2.0.1.el7uek.noarch.rpm kernel-uek-tools-5.4.17-2136.358.2.0.1.el7uek.x86_64.rpm SRPMS: http://oss.oracle.com/ol7/SRPMS-updates/kernel-uek-5.4.17... Related CVEs: CVE-2026-68480 Description of changes: [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} [5.4.17-2136.356.2] - nfsd: fix heap overflow in NFSv4.0 LOCK replay cache (Jeff Layton) [Orabug: 39167617,39368718] {CVE-2026-31402} - scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() (Maurizio Lombardi) [Orabug: 38985173,39368732] {CVE-2026-23216} - scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() (Maurizio Lombardi) [Orabug: 38970455,39368774] {CVE-2026-23193} - xfrm: esp: avoid in-place decrypt on shared skb frags (Kuan-Ting Chen) [Orabug: 39334580,39367147] {CVE-2026-43284} - x86/CPU/AMD: Add a fix for AMD-SB-7052 (Prathyushi Nangia) [Orabug: 39218897] {CVE-2025-54518} _______________________________________________ El-errata mailing list El-errata@oss.oracle.com https://oss.oracle.com/mailman/listinfo/el-errata