rlsa-2026:57254
Vulnerability from osv_rocky
Published
2026-08-21 06:02
Modified
2026-08-21 18:10
Summary
Important: kernel-rt security, bug fix, and enhancement update
Details

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

  • kernel: net: ieee802154: do not leave a dangling sk pointer in ieee802154_create() (CVE-2024-56602)

  • kernel: ip6_gre: Use cached t->net in ip6erspan_changelink() (CVE-2026-46120)

  • kernel: sched/psi: fix race between file release and pressure write (CVE-2026-52991)

  • kernel: mm/huge_memory: update file PMD counter before folio_put() (CVE-2026-53189)

  • kernel: scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd() (CVE-2026-63888)

  • kernel: scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf (CVE-2026-63887)

  • kernel: net/smc: reject CHID-0 ACCEPT that matches an empty ism_dev slot (CVE-2026-64048)

  • kernel: smb: client: mask server-provided mode to 07777 in modefromsid (CVE-2026-64379)

  • kernel: smb/client: handle overlapping allocated ranges in fallocate (CVE-2026-68388)

Bug Fix(es) and Enhancement(s):

  • sfc: TX queue stalls and NIC resets caused by GFP_ATOMIC allocation failures after Rocky Linux 8.10 kernel update (JIRA:Rocky Linux-219767)

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.

Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Credits
Rocky Enterprise Software Foundation
Red Hat
References
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Rocky Linux:8",
        "name": "kernel-rt",
        "purl": "pkg:rpm/rocky-linux/kernel-rt?distro=rocky-linux-8\u0026epoch=0"
      },
      "ranges": [
        {
          "database_specific": {
            "yum_repository": "NFV"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0:4.18.0-553.157.1.rt7.498.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [
    {
      "name": "Rocky Enterprise Software Foundation"
    },
    {
      "name": "Red Hat"
    }
  ],
  "database_specific": {
    "license": "CC-BY-4.0",
    "license_url": "https://creativecommons.org/licenses/by/4.0/",
    "source_advisory": "RHSA-2026:57254"
  },
  "details": "The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.\n\nSecurity Fix(es):\n\n* kernel: net: ieee802154: do not leave a dangling sk pointer in ieee802154_create() (CVE-2024-56602)\n\n* kernel: ip6_gre: Use cached t-\u003enet in ip6erspan_changelink() (CVE-2026-46120)\n\n* kernel: sched/psi: fix race between file release and pressure write (CVE-2026-52991)\n\n* kernel: mm/huge_memory: update file PMD counter before folio_put() (CVE-2026-53189)\n\n* kernel: scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd() (CVE-2026-63888)\n\n* kernel: scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf (CVE-2026-63887)\n\n* kernel: net/smc: reject CHID-0 ACCEPT that matches an empty ism_dev slot (CVE-2026-64048)\n\n* kernel: smb: client: mask server-provided mode to 07777 in modefromsid (CVE-2026-64379)\n\n* kernel: smb/client: handle overlapping allocated ranges in fallocate (CVE-2026-68388)\n\nBug Fix(es) and Enhancement(s):\n\n* sfc: TX queue stalls and NIC resets caused by GFP_ATOMIC allocation failures after Rocky Linux 8.10 kernel update (JIRA:Rocky Linux-219767)\n\nFor 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.",
  "id": "RLSA-2026:57254",
  "modified": "2026-08-21T18:10:34.013637Z",
  "published": "2026-08-21T06:02:13.869371Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2026:57254"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2334501"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482614"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492403"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492788"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502443"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502447"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502589"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507135"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513470"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:57254"
    }
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Important: kernel-rt security, bug fix, and enhancement update",
  "upstream": [
    "CVE-2024-56602",
    "CVE-2026-46120",
    "CVE-2026-52991",
    "CVE-2026-53189",
    "CVE-2026-63887",
    "CVE-2026-63888",
    "CVE-2026-64048",
    "CVE-2026-64379",
    "CVE-2026-68388"
  ]
}



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