{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "5342b77c4123ba39f911d92a813295fb3bb21f69"
            },
            {
              "fixed": "9a3b1edff1ecb47d323f2506b3ffc22178acd1c6"
            },
            {
              "fixed": "a2dbac3fb03b4427ccf057debc83fc61ee102529"
            },
            {
              "fixed": "de1f978c0f6ab42b28192d74dc59af52fdc76135"
            },
            {
              "fixed": "ddbc5dc5a2e29b3934da09c1ba3c930fd8a40fd6"
            },
            {
              "fixed": "a540a49fcca59d1c92c3a6462e67ca21676a88df"
            },
            {
              "fixed": "23c53269f2baaedf2d92784290cb9ef6db2a3bce"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.32"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90057.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nslip: remove slip_hangup() to fix use-after-free in slip_receive_buf()\n\nJaeyoung Chung and Eulgyu Kim reported a slab-use-after-free read\nin slip_receive_buf() when racing against tty hangup.\n\ntty_ldisc_hangup() calls ld-\u003eops-\u003ehangup() while holding only\na read lock on tty-\u003eldisc_sem (via tty_ldisc_ref()).\nBecause slip_hangup() simply called slip_close(), it ran concurrently\nwith reader functions such as slip_receive_buf().\n\nslip_close() unregisters and frees the net device and its private\nstruct slip, causing concurrent reader threads in slip_receive_buf()\nto dereference freed memory.\n\nLine discipline close() is already guaranteed to be called under\nthe write lock of tty-\u003eldisc_sem during hangup processing\n(in tty_ldisc_reinit() or tty_ldisc_kill()).\n\nRemove slip_hangup() so teardown is serialized cleanly by slip_close().",
  "id": "CVE-2026-90057",
  "modified": "2026-09-20T11:30:43.969452120Z",
  "published": "2026-09-17T16:05:41.670Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/23c53269f2baaedf2d92784290cb9ef6db2a3bce"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9a3b1edff1ecb47d323f2506b3ffc22178acd1c6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a2dbac3fb03b4427ccf057debc83fc61ee102529"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a540a49fcca59d1c92c3a6462e67ca21676a88df"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ddbc5dc5a2e29b3934da09c1ba3c930fd8a40fd6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/de1f978c0f6ab42b28192d74dc59af52fdc76135"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90057.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90057"
    },
    {
      "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:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "slip: remove slip_hangup() to fix use-after-free in slip_receive_buf()"
}