RLSA-2026:72623 (CVE-2026-45942)

Vulnerability from osv_rocky – Published: 2026-09-30 12:05 – Updated: 2026-10-01 12:12 – Source website
VLAI
Summary
Important: kernel security, bug fix, and enhancement update
Details

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

Security Fix(es):

  • kernel: ext4: fix e4b bitmap inconsistency reports (CVE-2026-45942)

  • kernel: RDMA/rxe: Fix iova-to-va conversion for MR page sizes != PAGE_SIZE (CVE-2026-46325)

  • kernel: crypto: af_alg - Cap AEAD AD length to 0x80000000 (CVE-2026-52972)

  • kernel: fhandle: fix UAF due to unlocked ->mnt_ns read in may_decode_fh() (CVE-2026-53341)

  • kernel: arm64: tlb: Flush walk cache when unsharing PMD tables (CVE-2026-63875)

  • kernel: RDMA/siw: Reject MPA FPDU length underflow before signed receive math (CVE-2026-64102)

  • kernel: perf/core: Detach event groups during remove_on_exec (CVE-2026-64556)

  • kernel: crypto: tegra - fix rctx->cryptlen calculation in tegra_gcm_do_one_req() (CVE-2026-80522)

  • kernel: perf: Reject exited events as group leaders (CVE-2026-74753)

Bug Fix(es) and Enhancement(s):

  • KVM: s390: Limit adapter indicator access to mapped page [rhel-9.8.z] (JIRA:Rocky Linux-188656)

  • crypto: xxhash64 should not be fips approved [rhel-9.8.z] (JIRA:Rocky Linux-256437)

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

{
  "affected": [
    {
      "package": {
        "ecosystem": "Rocky Linux:9",
        "name": "kernel",
        "purl": "pkg:rpm/rocky-linux/kernel?distro=rocky-linux-9\u0026epoch=0"
      },
      "ranges": [
        {
          "database_specific": {
            "yum_repository": "BaseOS"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0:5.14.0-687.53.1.el9_8"
            }
          ],
          "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-2026:72623"
  },
  "details": "The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: ext4: fix e4b bitmap inconsistency reports (CVE-2026-45942)\n\n* kernel: RDMA/rxe: Fix iova-to-va conversion for MR page sizes != PAGE_SIZE (CVE-2026-46325)\n\n* kernel: crypto: af_alg - Cap AEAD AD length to 0x80000000 (CVE-2026-52972)\n\n* kernel: fhandle: fix UAF due to unlocked -\u003emnt_ns read in may_decode_fh() (CVE-2026-53341)\n\n* kernel: arm64: tlb: Flush walk cache when unsharing PMD tables (CVE-2026-63875)\n\n* kernel: RDMA/siw: Reject MPA FPDU length underflow before signed receive math (CVE-2026-64102)\n\n* kernel: perf/core: Detach event groups during remove_on_exec (CVE-2026-64556)\n\n* kernel: crypto: tegra - fix rctx-\u003ecryptlen calculation in tegra_gcm_do_one_req() (CVE-2026-80522)\n\n* kernel: perf: Reject exited events as group leaders (CVE-2026-74753)\n\nBug Fix(es) and Enhancement(s):\n\n* KVM: s390: Limit adapter indicator access to mapped page [rhel-9.8.z] (JIRA:Rocky Linux-188656)\n\n* crypto: xxhash64 should not be fips approved [rhel-9.8.z] (JIRA:Rocky Linux-256437)\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-2026:72623",
  "modified": "2026-10-01T12:12:26.057576Z",
  "published": "2026-09-30T12:05:19.277561Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2026:72623"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482104"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2487002"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492364"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2495938"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502318"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502494"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2508319"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2524423"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2524434"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:72623"
    }
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Important: kernel security, bug fix, and enhancement update",
  "upstream": [
    "CVE-2026-45942",
    "CVE-2026-46325",
    "CVE-2026-52972",
    "CVE-2026-53341",
    "CVE-2026-63875",
    "CVE-2026-64102",
    "CVE-2026-64556",
    "CVE-2026-74753",
    "CVE-2026-80522"
  ]
}



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