Oracle alert ELSA-2026-50374 (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-2026-50374 Important: Oracle Linux 8 Unbreakable Enterprise kernel security update | |
| Date: | Tue, 07 Jul 2026 01:42:35 -0700 | |
| Message-ID: | <mailman.88.1783413826.18.el-errata@oss.oracle.com> |
Oracle Linux Security Advisory ELSA-2026-50374 http://linux.oracle.com/errata/ELSA-2026-50374.html The following updated rpms for Oracle Linux 8 have been uploaded to the Unbreakable Linux Network: aarch64: kernel-uek-5.4.17-2136.357.3.1.el8uek.aarch64.rpm kernel-uek-debug-5.4.17-2136.357.3.1.el8uek.aarch64.rpm kernel-uek-debug-devel-5.4.17-2136.357.3.1.el8uek.aarch64.rpm kernel-uek-devel-5.4.17-2136.357.3.1.el8uek.aarch64.rpm kernel-uek-doc-5.4.17-2136.357.3.1.el8uek.noarch.rpm SRPMS: http://oss.oracle.com/ol8/SRPMS-updates/kernel-uek-5.4.17... Related CVEs: CVE-2022-50073 CVE-2025-10263 CVE-2026-31504 CVE-2026-31657 CVE-2026-43037 CVE-2026-46331 CVE-2026-52943 CVE-2026-53359 Description of changes: [5.4.17-2136.357.3.1] - KVM: x86: Fix shadow paging use-after-free due to unexpected role (Paolo Bonzini) [Orabug: 39673892] - KVM: x86: Fix shadow paging use-after-free due to unexpected GFN (Sean Christopherson) [Orabug: 39673892] - KVM: x86/MMU: Recursively zap nested TDP SPs when zapping last/only parent (Ben Gardon) [Orabug: 39673892] - KVM: x86/mmu: Move flush logic from mmu_page_zap_pte() to FNAME(invlpg) (Sean Christopherson) [Orabug: 39673892] - KVM: x86/mmu: pull call to drop_large_spte() into __link_shadow_page() (Paolo Bonzini) [Orabug: 39673892] - KVM: x86/mmu: Passing up the error state of mmu_alloc_shadow_roots() (Like Xu) [Orabug: 39673892] - KVM: MMU: load PDPTRs outside mmu_lock (Paolo Bonzini) [Orabug: 39673892] - KVM: x86/mmu: Check PDPTRs before allocating PAE roots (Sean Christopherson) [Orabug: 39673892] - KVM: x86/mmu: Always pass 0 for @quadrant when gptes are 8 bytes (David Matlack) [Orabug: 39673892] - KVM: x86/mmu: Derive shadow MMU page role from parent (David Matlack) [Orabug: 39673892] - KVM: X86: Remove useless code to set role.gpte_is_8_bytes when role.direct (Lai Jiangshan) [Orabug: 39673892] - KVM: X86: Synchronize the shadow pagetable before link it (Lai Jiangshan) [Orabug: 39673892] - KVM: X86: Fix missed remote tlb flush in rmap_write_protect() (Lai Jiangshan) [Orabug: 39673892] - KVM: x86/mmu: Refactor shadow walk in __direct_map() to reduce indentation (Sean Christopherson) [Orabug: 39673892] - KVM: x86/mmu: Stop passing "direct" to mmu_alloc_root() (David Matlack) [Orabug: 39673892] - KVM: x86/mmu: Use a bool for direct (David Matlack) [Orabug: 39673892] - kvm: mmu: Replace unsigned with unsigned int for PTE access (Ben Gardon) [Orabug: 39673892] - KVM: x86/mmu: Ensure MMU pages are available when allocating roots (Sean Christopherson) [Orabug: 39673892] - KVM: x86/mmu: Allocate pae_root and lm_root pages in dedicated helper (Sean Christopherson) [Orabug: 39673892] - KVM: x86/mmu: Allocate the lm_root before allocating PAE roots (Sean Christopherson) [Orabug: 39673892] - KVM: x86/mmu: Capture 'mmu' in a local variable when allocating roots (Sean Christopherson) [Orabug: 39673892] - KVM: x86/mmu: Alloc page for PDPTEs when shadowing 32-bit NPT with 64-bit (Sean Christopherson) [Orabug: 39673892] - KVM: x86/mmu: Stash 'kvm' in a local variable in kvm_mmu_free_roots() (Sean Christopherson) [Orabug: 39673892] - KVM: x86/mmu: Add a helper to consolidate root sp allocation (Sean Christopherson) [Orabug: 39673892] - net/sched: act_pedit: fix action bind logic (Pedro Tammela) [Orabug: 39680880] - net/sched: act_pedit: free pedit keys on bail from offset check (Pedro Tammela) [Orabug: 39680880] - net/sched: fix pedit partial COW leading to page cache corruption (Rajat Gupta) [Orabug: 39680880] {CVE-2026-46331} - net/sched: act_pedit: Parse L3 Header for L4 offset (Max Tottenham) [Orabug: 39680880] - net/sched: act_pedit: rate limit datapath messages (Pedro Tammela) [Orabug: 39680880] - net/sched: act_pedit: check static offsets a priori (Pedro Tammela) [Orabug: 39680880] - net/sched: act_pedit: remove extra check for key type (Pedro Tammela) [Orabug: 39680880] - net/sched: simplify tcf_pedit_act (Pedro Tammela) [Orabug: 39680880] - net/sched: transition act_pedit to rcu and percpu stats (Pedro Tammela) [Orabug: 39680880] - net/sched: act_pedit: use NLA_POLICY for parsing 'ex' keys (Pedro Tammela) [Orabug: 39680880] [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} [5.4.17-2136.356.1] - arm64/kvm: Include linux/random.h in trng.c (Siddh Raman Pant) [Orabug: 39327096] - i2c: designware: Disable TX_EMPTY irq while waiting for block length byte (Tam Nguyen) [Orabug: 39174662] - i2c: designware: Handle invalid SMBus block data response length value (Tam Nguyen) [Orabug: 39174662] - i2c: designware: fix __i2c_dw_disable() in case master is holding SCL low (Yann Sionneau) [Orabug: 39174662] [5.4.17-2136.355.3] - crypto: algif_aead - Fix minimum RX size check for decryption (Herbert Xu) [Orabug: 39250687,39331106] {CVE-2026-43077} - crypto: af_alg - Fix page reassignment overflow in af_alg_pull_tsgl (Herbert Xu) [Orabug: 39250687,39331111] {CVE-2026-43078} - crypto: authencesn - Fix src offset when decrypting in-place (Herbert Xu) [Orabug: 39250687] - crypto: authencesn - Do not place hiseq at end of dst for out-of-place decryption (Herbert Xu) [Orabug: 39250687,39300911] {CVE-2026-43033} - crypto: authenc - use memcpy_sglist() instead of null skcipher (Eric Biggers) [Orabug: 39250687] - crypto: algif_aead - snapshot IV for async AEAD requests (Douya Le) [Orabug: 39250687,39452217] {CVE-2026-46028} - crypto: algif_aead - Revert to operating out-of-place (Herbert Xu) [Orabug: 39250687,39283868,39292250] {CVE-2026-31431} - crypto: algif_aead - use memcpy_sglist() instead of null skcipher (Eric Biggers) [Orabug: 39250687] {CVE-2026-31431} - crypto: scatterwalk - Backport memcpy_sglist() (Eric Biggers) [Orabug: 39250687] - crypto: doc - fix kernel-doc notation in chacha.c and af_alg.c (Randy Dunlap) [Orabug: 39250687] _______________________________________________ El-errata mailing list El-errata@oss.oracle.com https://oss.oracle.com/mailman/listinfo/el-errata