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High ALSA-2026:63014 14 CVEs

Important: kernel security, bug fix, and enhancement update

Published Sep 3, 2026 · Updated Oct 29, 2026

Ecosystem: AlmaLinux

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: s390/cpum_sf: Handle CPU hotplug remove during sampling (CVE-2024-57849)
* kernel: smc91x: fix broken irq-context in PREEMPT_RT (CVE-2025-71132)
* kernel: bonding: alb: fix UAF in rlb_arp_recv during bond up/down (CVE-2026-45970)
* kernel: zram: fix use-after-free in zram_bvec_write_partial() (CVE-2026-53185)
* kernel: pNFS: Fix use-after-free in pnfs_update_layout() (CVE-2026-63800)
* kernel: nfsd: fix posix_acl leak on SETACL decode failure (CVE-2026-53397)
* kernel: nfsd: release layout stid on setlease failure (CVE-2026-53399)
* kernel: NFSv4/flexfiles: reject zero filehandle version count (CVE-2026-53392)
* kernel: NFSv4/pNFS: reject zero-length r_addr in nfs4_decode_mp_ds_addr (CVE-2026-53391)
* kernel: net: mana: validate rx_req_idx to prevent out-of-bounds array access (CVE-2026-64018)
* kernel: Kernel: Remote out-of-bounds write in RDMA/siw (CVE-2026-64268)
* kernel: NFSv4: include MAY_WRITE in open permission mask for O_TRUNC (CVE-2026-64298)
* kernel: AMD-SN-7061: Safe RET Interrupt Vulnerability (CVE-2026-68480)
* kernel: net: ipv6: use-after-free in fib6_rule_suppress due to stale res->rt6 pointer (CVE-2026-74581)

Bug Fix(es) and Enhancement(s):

* qede: build_skb failure causes off-by-one BD ring corruption and kernel panic [almalinux-8.10.z] (JIRA:AlmaLinux-193045)
* powerpc/pseries: lparcfg - fix kbuf[] underflow (JIRA:AlmaLinux-240144)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 25

ReleasePackageFixed in
AlmaLinux · 8 bpftool 4.18.0-553.159.1.el8_10
AlmaLinux · 8 kernel 4.18.0-553.159.1.el8_10
AlmaLinux · 8 kernel-abi-stablelists 4.18.0-553.159.1.el8_10
AlmaLinux · 8 kernel-core 4.18.0-553.159.1.el8_10
AlmaLinux · 8 kernel-cross-headers 4.18.0-553.159.1.el8_10
AlmaLinux · 8 kernel-debug 4.18.0-553.159.1.el8_10
AlmaLinux · 8 kernel-debug-core 4.18.0-553.159.1.el8_10
AlmaLinux · 8 kernel-debug-devel 4.18.0-553.159.1.el8_10
AlmaLinux · 8 kernel-debug-modules 4.18.0-553.159.1.el8_10
AlmaLinux · 8 kernel-debug-modules-extra 4.18.0-553.159.1.el8_10
AlmaLinux · 8 kernel-devel 4.18.0-553.159.1.el8_10
AlmaLinux · 8 kernel-doc 4.18.0-553.159.1.el8_10
AlmaLinux · 8 kernel-headers 4.18.0-553.159.1.el8_10
AlmaLinux · 8 kernel-modules 4.18.0-553.159.1.el8_10
AlmaLinux · 8 kernel-modules-extra 4.18.0-553.159.1.el8_10
AlmaLinux · 8 kernel-tools 4.18.0-553.159.1.el8_10
AlmaLinux · 8 kernel-tools-libs 4.18.0-553.159.1.el8_10
AlmaLinux · 8 kernel-tools-libs-devel 4.18.0-553.159.1.el8_10
AlmaLinux · 8 kernel-zfcpdump 4.18.0-553.159.1.el8_10
AlmaLinux · 8 kernel-zfcpdump-core 4.18.0-553.159.1.el8_10
AlmaLinux · 8 kernel-zfcpdump-devel 4.18.0-553.159.1.el8_10
AlmaLinux · 8 kernel-zfcpdump-modules 4.18.0-553.159.1.el8_10
AlmaLinux · 8 kernel-zfcpdump-modules-extra 4.18.0-553.159.1.el8_10
AlmaLinux · 8 perf 4.18.0-553.159.1.el8_10
AlmaLinux · 8 python3-perf 4.18.0-553.159.1.el8_10

Vulnerabilities 14

  • Critical 9.8
    CVE-2026-53399

    nfsd: release layout stid on setlease failure

    In the Linux kernel, the following vulnerability has been resolved: nfsd: release layout stid on setlease failure nfs4_alloc_stid() publishes the new stid into cl->cl_stateids via idr_alloc_cyclic() under cl_lock before returning to nfsd4_alloc_layout_stateid…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Critical 9.8
    CVE-2026-63800

    pNFS: Fix use-after-free in pnfs_update_layout()

    In the Linux kernel, the following vulnerability has been resolved: pNFS: Fix use-after-free in pnfs_update_layout() When hitting the NFS_LAYOUT_RETURN branch in pnfs_update_layout(), the code calls pnfs_prepare_to_retry_layoutget(lo). If it succeeds, pnfs_pu…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Critical 9.8
    CVE-2026-64268

    RDMA/siw: bound Read Response placement to the RREAD length

    In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: bound Read Response placement to the RREAD length In drivers/infiniband/sw/siw/siw_qp_rx.c, siw_proc_rresp() places each inbound Read Response DDP segment at sge->laddr + wqe->proce…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Critical 9.8
    CVE-2026-74581

    net: ipv6: clear suppressed fib6 rule result

    In the Linux kernel, the following vulnerability has been resolved: net: ipv6: clear suppressed fib6 rule result fib6_rule_suppress() drops a suppressed route with ip6_rt_put_flags(), but leaves res->rt6 pointing at the released rt6_info. If no later rule sup…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Critical 9.3
    CVE-2026-64018

    net: mana: validate rx_req_idx to prevent out-of-bounds array access

    In the Linux kernel, the following vulnerability has been resolved: net: mana: validate rx_req_idx to prevent out-of-bounds array access In mana_hwc_rx_event_handler(), rx_req_idx is derived from sge->address in DMA-coherent memory. In Confidential VMs (SEV-S…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2024-57849

    s390/cpum_sf: Handle CPU hotplug remove during sampling

    In the Linux kernel, the following vulnerability has been resolved: s390/cpum_sf: Handle CPU hotplug remove during sampling CPU hotplug remove handling triggers the following function call sequence: CPUHP_AP_PERF_S390_SF_ONLINE --> s390_pmu_sf_offline_cpu() .…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2026-45970

    bonding: alb: fix UAF in rlb_arp_recv during bond up/down

    In the Linux kernel, the following vulnerability has been resolved: bonding: alb: fix UAF in rlb_arp_recv during bond up/down The ALB RX path may access rx_hashtbl concurrently with bond teardown. During rapid bond up/down cycles, rlb_deinitialize() frees rx_…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2026-53185

    zram: fix use-after-free in zram_bvec_write_partial()

    In the Linux kernel, the following vulnerability has been resolved: zram: fix use-after-free in zram_bvec_write_partial() zram_read_page() picks the sync or async backing device read path based on whether the parent bio is NULL. zram_bvec_write_partial() pass…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.5
    CVE-2025-71132

    smc91x: fix broken irq-context in PREEMPT_RT

    In the Linux kernel, the following vulnerability has been resolved: smc91x: fix broken irq-context in PREEMPT_RT When smc91x.c is built with PREEMPT_RT, the following splat occurs in FVP_RevC: [ 13.055000] smc91x LNRO0003:00 eth0: link up, 10Mbps, half-duplex…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.5
    CVE-2026-53391

    NFSv4/pNFS: reject zero-length r_addr in nfs4_decode_mp_ds_addr

    In the Linux kernel, the following vulnerability has been resolved: NFSv4/pNFS: reject zero-length r_addr in nfs4_decode_mp_ds_addr nfs4_decode_mp_ds_addr() decodes the r_netid and r_addr opaques of a netaddr4 from a GETDEVICEINFO multipath-DS body, then imme…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.5
    CVE-2026-53392

    NFSv4/flexfiles: reject zero filehandle version count

    In the Linux kernel, the following vulnerability has been resolved: NFSv4/flexfiles: reject zero filehandle version count ff_layout_alloc_lseg() decodes the filehandle-version array count from the flexfiles layout body. The value is used as the count for kzal…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.5
    CVE-2026-53397

    nfsd: fix posix_acl leak on SETACL decode failure

    In the Linux kernel, the following vulnerability has been resolved: nfsd: fix posix_acl leak on SETACL decode failure nfsaclsvc_decode_setaclargs() and nfs3svc_decode_setaclargs() each call nfs_stream_decode_acl() twice, first for NFS_ACL and then for NFS_DFA…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.1
    CVE-2026-64298

    NFSv4: include MAY_WRITE in open permission mask for O_TRUNC

    In the Linux kernel, the following vulnerability has been resolved: NFSv4: include MAY_WRITE in open permission mask for O_TRUNC POSIX requires write permission to truncate a file, so an open() that specifies O_TRUNC must be authorized for write access regard…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2026-68480

    x86/bugs: Make Safe-RET robust against interrupt injection

    In the Linux kernel, the following vulnerability has been resolved: x86/bugs: Make Safe-RET robust against interrupt injection An attacker injecting interrupts while the Safe-RET mitigation executes on machines affected by SRSO can neutralize the safe return …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu

References

  • report
    https://access.redhat.com/security/cve/CVE-2024-57849
  • report
    https://access.redhat.com/security/cve/CVE-2025-71132
  • report
    https://access.redhat.com/security/cve/CVE-2026-45970
  • report
    https://access.redhat.com/security/cve/CVE-2026-53185
  • report
    https://access.redhat.com/security/cve/CVE-2026-53391
  • report
    https://access.redhat.com/security/cve/CVE-2026-53392
  • report
    https://access.redhat.com/security/cve/CVE-2026-53397
  • report
    https://access.redhat.com/security/cve/CVE-2026-53399
  • report
    https://access.redhat.com/security/cve/CVE-2026-63800
  • report
    https://access.redhat.com/security/cve/CVE-2026-64018
  • report
    https://access.redhat.com/security/cve/CVE-2026-64268
  • report
    https://access.redhat.com/security/cve/CVE-2026-64298
  • report
    https://access.redhat.com/security/cve/CVE-2026-68480
  • report
    https://access.redhat.com/security/cve/CVE-2026-74581
  • report
    https://bugzilla.redhat.com/2337144
  • report
    https://bugzilla.redhat.com/2429603
  • report
    https://bugzilla.redhat.com/2482006
  • report
    https://bugzilla.redhat.com/2492735
  • report
    https://bugzilla.redhat.com/2502219
  • report
    https://bugzilla.redhat.com/2502227
  • report
    https://bugzilla.redhat.com/2502239
  • report
    https://bugzilla.redhat.com/2502240
  • report
    https://bugzilla.redhat.com/2502260
  • report
    https://bugzilla.redhat.com/2502421
  • report
    https://bugzilla.redhat.com/2507089
  • report
    https://bugzilla.redhat.com/2507208
  • report
    https://bugzilla.redhat.com/2508363
  • report
    https://bugzilla.redhat.com/2520980
  • advisory
    https://errata.almalinux.org/8/ALSA-2026-63014.html