{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "1f39b1dfa53c84b56d7ad37fed44afda7004959d"
            },
            {
              "fixed": "af755456299d44e4ed6af3b7c70a7f03ea37fdf1"
            },
            {
              "fixed": "71c017b3f83ff72638f2a1b1d6d4e7bc61d30231"
            },
            {
              "fixed": "0e9dd7cfb9986b78cc81eca126ccfbf57f4c0602"
            },
            {
              "fixed": "8c0d3cf0d5108c96317e0eca92b60dd368867cef"
            },
            {
              "fixed": "df63c76f9c8d881ca7bce1aecfba512328d0527d"
            },
            {
              "fixed": "3cbf5e3c46e66d9b3b6b91099bb720c6cb1be3bc"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.17.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74381.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpu: host1x: Allow entries in BO caches to be freed\n\nWhen a buffer object is pinned via host1x_bo_pin() with a cache, the\nresulting mapping is kept in the cache so it can be reused on subsequent\npins. Each mapping held a reference to the underlying host1x_bo (taken\nin tegra_bo_pin / gather_bo_pin), so as long as a mapping was cached,\nthe bo itself could not be freed.\n\nHowever, the only way to remove the cached mapping was through the free\npath of the buffer object. This meant that if a bo got cached, it could\nnever get freed again.\n\nResolve the circularity by holding a weak reference to the bo from the\ncache side. This is done by having the .pin callbacks not bump the bo's\nrefcount -- instead the common Host1x bo code does so, except for the\ncache reference.\n\nAlso move the remove-cache-mapping-on-free code into a common function\ninside Host1x code. This is only called from the TegraDRM GEM buffers\nsince those are the only ones that can be cached at the moment.",
  "id": "CVE-2026-74381",
  "modified": "2026-08-18T03:30:56.396813098Z",
  "published": "2026-08-15T05:58:58.354Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0e9dd7cfb9986b78cc81eca126ccfbf57f4c0602"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3cbf5e3c46e66d9b3b6b91099bb720c6cb1be3bc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/71c017b3f83ff72638f2a1b1d6d4e7bc61d30231"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8c0d3cf0d5108c96317e0eca92b60dd368867cef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/af755456299d44e4ed6af3b7c70a7f03ea37fdf1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/df63c76f9c8d881ca7bce1aecfba512328d0527d"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74381.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74381"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "gpu: host1x: Allow entries in BO caches to be freed"
}