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RLSA-2026:25121 (CVE-2023-53781)

Vulnerability from osv_rocky – Published: 2026-06-12 18:00 – Updated: 2026-06-26 18:05 – Source website
VLAI
Summary
Critical: kernel security update
Details

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

Security Fix(es):

  • kernel: geneve: Fix use-after-free in geneve_find_dev(). (CVE-2025-21858)

  • kernel: smc: Fix use-after-free in tcp_write_timer_handler() (CVE-2023-53781)

  • kernel: nbd: defer config unlock in nbd_genl_connect (CVE-2025-68366)

  • kernel: libceph: prevent potential out-of-bounds reads in handle_auth_done() (CVE-2026-22984)

  • kernel: libceph: replace overzealous BUG_ON in osdmap_apply_incremental() (CVE-2026-22990)

  • kernel: netfilter: nf_tables: release flowtable after rcu grace period on error (CVE-2026-23392)

  • kernel: ALSA: 6fire: fix use-after-free on disconnect (CVE-2026-31581)

  • kernel: smb: client: fix OOB reads parsing symlink error response (CVE-2026-31613)

  • kernel: ip6_tunnel: clear skb2->cb[] in ip4ip6_err() (CVE-2026-43037)

  • kernel: ipv6: icmp: clear skb2->cb[] in ip6_err_gen_icmpv6_unreach() (CVE-2026-43038)

  • kernel: dlm: validate length in dlm_search_rsb_tree (CVE-2026-43125)

  • kernel: RDMA/rxe: Fix double free in rxe_srq_from_init (CVE-2026-45852)

  • kernel: RDMA/mlx4: Fix mis-use of RCU in mlx4_srq_event() (CVE-2026-46181)

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
8.8 (High)
CVSS:3.1/AV:N/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:8",
        "name": "kernel",
        "purl": "pkg:rpm/rocky-linux/kernel?distro=rocky-linux-8\u0026epoch=0"
      },
      "ranges": [
        {
          "database_specific": {
            "yum_repository": "BaseOS"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0:4.18.0-553.132.1.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [
    {
      "name": "Rocky Enterprise Software Foundation"
    },
    {
      "name": "Red Hat"
    }
  ],
  "details": "The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: geneve: Fix use-after-free in geneve_find_dev(). (CVE-2025-21858)\n\n* kernel: smc: Fix use-after-free in tcp_write_timer_handler() (CVE-2023-53781)\n\n* kernel: nbd: defer config unlock in nbd_genl_connect (CVE-2025-68366)\n\n* kernel: libceph: prevent potential out-of-bounds reads in handle_auth_done() (CVE-2026-22984)\n\n* kernel: libceph: replace overzealous BUG_ON in osdmap_apply_incremental() (CVE-2026-22990)\n\n* kernel: netfilter: nf_tables: release flowtable after rcu grace period on error (CVE-2026-23392)\n\n* kernel: ALSA: 6fire: fix use-after-free on disconnect (CVE-2026-31581)\n\n* kernel: smb: client: fix OOB reads parsing symlink error response (CVE-2026-31613)\n\n* kernel: ip6_tunnel: clear skb2-\u003ecb[] in ip4ip6_err() (CVE-2026-43037)\n\n* kernel: ipv6: icmp: clear skb2-\u003ecb[] in ip6_err_gen_icmpv6_unreach() (CVE-2026-43038)\n\n* kernel: dlm: validate length in dlm_search_rsb_tree (CVE-2026-43125)\n\n* kernel: RDMA/rxe: Fix double free in rxe_srq_from_init (CVE-2026-45852)\n\n* kernel: RDMA/mlx4: Fix mis-use of RCU in mlx4_srq_event() (CVE-2026-46181)\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-2026:25121",
  "modified": "2026-06-26T18:05:50.434566Z",
  "published": "2026-06-12T18:00:42.192023Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2026:25121"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2351619"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2420279"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2424881"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2432389"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2432400"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451218"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2461471"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2461480"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464351"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464397"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467234"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482166"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482532"
    }
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Critical: kernel security update",
  "upstream": [
    "CVE-2023-53781",
    "CVE-2025-21858",
    "CVE-2025-68366",
    "CVE-2026-22984",
    "CVE-2026-22990",
    "CVE-2026-23392",
    "CVE-2026-31581",
    "CVE-2026-31613",
    "CVE-2026-43037",
    "CVE-2026-43038",
    "CVE-2026-43125",
    "CVE-2026-45852",
    "CVE-2026-46181"
  ]
}



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