rlsa-2026:61581
Vulnerability from osv_rocky
Published
2026-09-01 06:05
Modified
2026-09-01 12:12
Summary
Moderate: tar security, bug fix, and enhancement update
Details

The GNU tar program can save multiple files in an archive and restore files from an archive.

Security Fix(es):

  • tar: tar: Hidden file injection via crafted archives (CVE-2026-5704)

  • tar: tar: TOCTOU in incremental dumpdir 'X' rename handling allows restore path escape (CVE-2026-18477)

  • tar: tar: --one-top-level hardlink targets not confined to top-level directory enabling arbitrary file overwrite (CVE-2026-18508)

Bug Fix(es) and Enhancement(s):

  • tar: --one-top-level with absolute path fails [rhel-9] (JIRA:Rocky Linux-144021)

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

{
  "affected": [
    {
      "package": {
        "ecosystem": "Rocky Linux:9",
        "name": "tar",
        "purl": "pkg:rpm/rocky-linux/tar?distro=rocky-linux-9\u0026epoch=2"
      },
      "ranges": [
        {
          "database_specific": {
            "yum_repository": "BaseOS"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.34-13.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-2026:61581"
  },
  "details": "The GNU tar program can save multiple files in an archive and restore files from an archive.\n\nSecurity Fix(es):\n\n* tar: tar: Hidden file injection via crafted archives (CVE-2026-5704)\n\n* tar: tar: TOCTOU in incremental dumpdir \u0027X\u0027 rename handling allows restore path escape (CVE-2026-18477)\n\n* tar: tar: --one-top-level hardlink targets not confined to top-level directory enabling arbitrary file overwrite (CVE-2026-18508)\n\nBug Fix(es) and Enhancement(s):\n\n* tar: --one-top-level with absolute path fails [rhel-9] (JIRA:Rocky Linux-144021)\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-2026:61581",
  "modified": "2026-09-01T12:12:21.554737Z",
  "published": "2026-09-01T06:05:33.619213Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2026:61581"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2455360"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2509735"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2509843"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:61581"
    }
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Moderate: tar security, bug fix, and enhancement update",
  "upstream": [
    "CVE-2026-18477",
    "CVE-2026-18508",
    "CVE-2026-5704"
  ]
}



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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.