{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "facd61053cff100973921d4d45d47cf53c747ec6"
            },
            {
              "fixed": "b98fad81f1202b0eb26aacf3ff4cc7a21ed3b5bf"
            },
            {
              "fixed": "834ddf899484a2f23129080e8773bc04f4691d07"
            },
            {
              "fixed": "a019b074903b3ad0a9726087efd0e8291452023b"
            },
            {
              "fixed": "ca03a7984a34f48085fd013e0d2cf4e6420b4acf"
            },
            {
              "fixed": "4b9a5458d02e214ef2b384124ca626e3e381d778"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.148"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.101"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.42"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68149.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs: preserve ACL_DONT_CACHE state in forget_cached_acl()\n\nThe ACL_DONT_CACHE state is meant to be a constant state for the inode\nfor filesystems that want to opt out of posix acl caching.\n\nCommit facd61053cff1 (\"fuse: fixes after adapting to new posix acl api\")\nused this facility to opt out of posix acl caching for fuse inodes with\nfuse server that does not negotiate FUSE_POSIX_ACL (fc-\u003eposix_acl).\n\nThe commit also takes care to gate the forget_all_cached_acls() call in\nfuse_set_acl() on fc-\u003eposix_acl because there is no need for it, but\nthere are other placed in fuse code which call forget_all_cached_acls()\nunconditional to fc-\u003eposix_acl and those cause the loss of the\nACL_DONT_CACHE state.\n\nThis is not only a functional bug. Properly timed, a get_acl() from this\nfuse filesystem can return a stale cached value, as was observed in tests,\nbecause set_acl() does not invalidate the unintentional acl cache.\n\nWe could fix this in fuse, but it actually makes no sense for the vfs\nhelper forget_cached_acl() to invalidate the ACL_DONT_CACHE state, so\nlet it not do that to fix fuse and future users of ACL_DONT_CACHE.",
  "id": "CVE-2026-68149",
  "modified": "2026-08-15T11:31:02.248807346Z",
  "published": "2026-08-10T11:59:14.645Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4b9a5458d02e214ef2b384124ca626e3e381d778"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/834ddf899484a2f23129080e8773bc04f4691d07"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a019b074903b3ad0a9726087efd0e8291452023b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b98fad81f1202b0eb26aacf3ff4cc7a21ed3b5bf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ca03a7984a34f48085fd013e0d2cf4e6420b4acf"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68149.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68149"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "fs: preserve ACL_DONT_CACHE state in forget_cached_acl()"
}