alsa-2026:22963
Vulnerability from osv_almalinux
Published
2026-06-03 00:00
Modified
2026-06-04 10:07
Summary
Critical: samba security update
Details

Samba is an open-source implementation of the Server Message Block (SMB) protocol and the related Common Internet File System (CIFS) protocol, which allow PC-compatible machines to share files, printers, and various information.

Security Fix(es):

  • samba: Missing access check on reparse point operations (CVE-2026-1933)
  • samba: vfs_worm does not block directory modification (CVE-2026-2340)
  • samba: group policy certificate enrollment uses http:// without validation (CVE-2026-3012)
  • samba: Samba: Remote Code Execution in printing subsystem via unescaped job description (CVE-2026-4480)
  • ngtcp2: ngtcp2: Denial of service via stack buffer overflow during QUIC handshake (CVE-2026-40170)
  • samba: Remote Code Execution in SAMR (CVE-2026-4408)

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.

References
To clipboard 

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          "type": "ECOSYSTEM"
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    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "samba-winexe"
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    }
  ],
  "details": "Samba is an open-source implementation of the Server Message Block (SMB) protocol and the related Common Internet File System (CIFS) protocol, which allow PC-compatible machines to share files, printers, and various information.  \n\nSecurity Fix(es):  \n\n  * samba: Missing access check on reparse point operations (CVE-2026-1933)\n  * samba: vfs_worm does not block directory modification (CVE-2026-2340)\n  * samba: group policy certificate enrollment uses \u003chttp://\u003e without validation (CVE-2026-3012)\n  * samba: Samba: Remote Code Execution in printing subsystem via unescaped job description (CVE-2026-4480)\n  * ngtcp2: ngtcp2: Denial of service via stack buffer overflow during QUIC handshake (CVE-2026-40170)\n  * samba: Remote Code Execution in SAMR (CVE-2026-4408)\n\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.\n",
  "id": "ALSA-2026:22963",
  "modified": "2026-06-04T10:07:02Z",
  "published": "2026-06-03T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:22963"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-1933"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-2340"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-3012"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-40170"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-4408"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-4480"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2447317"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2447318"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2447319"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2452232"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2459061"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2479762"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/10/ALSA-2026-22963.html"
    }
  ],
  "related": [
    "CVE-2026-1933",
    "CVE-2026-2340",
    "CVE-2026-3012",
    "CVE-2026-4480",
    "CVE-2026-40170",
    "CVE-2026-4408"
  ],
  "summary": "Critical: samba security update"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.