{
  "cveId": "CVE-2026-80982",
  "url": "https://patchblox.com/security/cve/CVE-2026-80982",
  "summary": "CVE-2026-80982 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-80982, released September 23, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "net/smc: fix use-after-free in smc_rx_pipe_buf_release()",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  net/smc: fix use-after-free in smc_rx_pipe_buf_release()  smc_rx_splice() hands RMB pages to a pipe and takes a socket reference per entry so the smc_sock stays alive until the reader finishes. The connection does not: a concurrent close runs smc_conn_free(), which releases the receive buffer back to the link group pool.  smc_rx_pipe_buf_release() tests sk_state before taking the socket lock. The state can change between the test and the lock, and smc_rx_update_cons() then dereferences conn-\u003Ermb_desc and walks conn-\u003Elgr, which smc_conn_free() has already released. On the is_reg_err path smcr_buf_unuse() frees the descriptor outright, so this is a use-after-free.  Take the socket lock first and test conn-\u003Efreed instead. smc_conn_free() sets that flag before releasing anything, and every caller holds the socket lock. The two paths exclude each other: either the pipe release runs first with everything valid, or it sees the flag and skips the update.",
  "published": "2026-09-11T20:19:04Z",
  "severity": "Important",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00164,
  "epssPercentile": 0.05628,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80982",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.190-1",
      "fix": "DEBIAN-CVE-2026-80982",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-80982",
      "released": "2026-09-23T19:19:02Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.111-1",
      "fix": "DEBIAN-CVE-2026-80982",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-80982",
      "released": "2026-09-23T19:19:02Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-80982",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-80982",
      "released": "2026-09-23T19:19:02Z"
    },
    {
      "platform": "linux",
      "product": "linux-6.12",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.12.111-1~deb12u1",
      "fix": "DEBIAN-CVE-2026-80982",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-80982",
      "released": "2026-09-23T19:19:02Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}