{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "f90cf6079bf67988f8b1ad1ade70fc89d0080905"
            },
            {
              "fixed": "f8cccb427e65d725fc0ba05e8900b4676eda268e"
            },
            {
              "fixed": "60f768d46df561e06d92ffcacc00909f37a0f23d"
            },
            {
              "fixed": "80900b5424f3454256153ce386388df43b324f63"
            },
            {
              "fixed": "17cb7957c979529cc98ff57f7ac331532f1f7c83"
            },
            {
              "fixed": "98c22210aeadce67d9d20059f0dbbd01ba7fdbba"
            },
            {
              "fixed": "25f19e476ab15defe698504212899fdb9f7cd61b"
            },
            {
              "fixed": "83110c2c8c46c035c2e0fc8ff3e4991183bf9ccd"
            },
            {
              "fixed": "4bf95f797edd63c93330eafb6d6e670982344b9b"
            },
            {
              "fixed": "a0e5a598fe9a4612b852406b51153b881592aede"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.10.0"
            },
            {
              "fixed": "5.10.258"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.209"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.175"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.136"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.83"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.24"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.14"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.20.0"
            },
            {
              "fixed": "7.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31585.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: vidtv: fix nfeeds state corruption on start_streaming failure\n\nsyzbot reported a memory leak in vidtv_psi_service_desc_init [1].\n\nWhen vidtv_start_streaming() fails inside vidtv_start_feed(), the\nnfeeds counter is left incremented even though no feed was actually\nstarted. This corrupts the driver state: subsequent start_feed calls\nsee nfeeds \u003e 1 and skip starting the mux, while stop_feed calls\neventually try to stop a non-existent stream.\n\nThis state corruption can also lead to memory leaks, since the mux\nand channel resources may be partially allocated during a failed\nstart_streaming but never cleaned up, as the stop path finds\ndvb-\u003estreaming == false and returns early.\n\nFix by decrementing nfeeds back when start_streaming fails, keeping\nthe counter in sync with the actual number of active feeds.\n\n[1]\nBUG: memory leak\nunreferenced object 0xffff888145b50820 (size 32):\n comm \"syz.0.17\", pid 6068, jiffies 4294944486\n backtrace (crc 90a0c7d4):\n  vidtv_psi_service_desc_init+0x74/0x1b0 drivers/media/test-drivers/vidtv/vidtv_psi.c:288\n  vidtv_channel_s302m_init+0xb1/0x2a0 drivers/media/test-drivers/vidtv/vidtv_channel.c:83\n  vidtv_channels_init+0x1b/0x40 drivers/media/test-drivers/vidtv/vidtv_channel.c:524\n  vidtv_mux_init+0x516/0xbe0 drivers/media/test-drivers/vidtv/vidtv_mux.c:518\n  vidtv_start_streaming drivers/media/test-drivers/vidtv/vidtv_bridge.c:194 [inline]\n  vidtv_start_feed+0x33e/0x4d0 drivers/media/test-drivers/vidtv/vidtv_bridge.c:239",
  "id": "CVE-2026-31585",
  "modified": "2026-07-15T01:49:20.431775087Z",
  "published": "2026-04-24T14:42:14.266Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/17cb7957c979529cc98ff57f7ac331532f1f7c83"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/25f19e476ab15defe698504212899fdb9f7cd61b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4bf95f797edd63c93330eafb6d6e670982344b9b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/60f768d46df561e06d92ffcacc00909f37a0f23d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/80900b5424f3454256153ce386388df43b324f63"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/83110c2c8c46c035c2e0fc8ff3e4991183bf9ccd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/98c22210aeadce67d9d20059f0dbbd01ba7fdbba"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a0e5a598fe9a4612b852406b51153b881592aede"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f8cccb427e65d725fc0ba05e8900b4676eda268e"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31585.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31585"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "media: vidtv: fix nfeeds state corruption on start_streaming failure"
}