{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.101-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.1.6-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux-6.12"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.101-1~deb12u1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  rds: tcp: unregister sysctl before tearing down listen socket  rds_tcp_exit_net() frees the per-netns RDS TCP listen socket via rds_tcp_kill_sock() before unregistering the per-netns sysctl table.  Since rds_tcp_skbuf_handler() derives the netns from rtn-\u003erds_tcp_listen_sock-\u003esk, a concurrent sysctl write can race with netns teardown and dereference the freed socket/sk.  KASAN reports the race as:    BUG: KASAN: slab-use-after-free in rds_tcp_skbuf_handler+0x2aa/0x2e0   rds_tcp_skbuf_handler              net/rds/tcp.c:721   proc_sys_call_handler              fs/proc/proc_sysctl.c   vfs_write                          fs/read_write.c   __x64_sys_pwrite64                 fs/read_write.c  Fix this by unregistering the RDS TCP sysctl table before calling rds_tcp_kill_sock().  unregister_net_sysctl_table() prevents new sysctl handlers from starting and waits for in-flight handlers to finish, so the listen socket can then be released safely. The fix was tested against the linked reproducer.",
  "id": "DEBIAN-CVE-2026-68290",
  "modified": "2026-09-14T16:47:48.760367663Z",
  "published": "2026-08-10T13:20:18.340Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-68290"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-68290"
  ]
}