{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  ipv6: mcast: fix RCU list diversion in ip6_mc_del1_src()  When removing a source filter whose count reaches zero, ip6_mc_del1_src() unlinks psf from pmc-\u003emca_sources. If the filter was previously active, the code moved psf directly into pmc-\u003emca_tomb by updating psf-\u003esf_next.  Because pmc-\u003emca_sources is traversed locklessly under RCU (e.g. by ipv6_chk_mcast_addr()), mutating psf-\u003esf_next before a grace period elapses diverts concurrent readers to the tombstone list. Consequently, readers miss remaining active sources in pmc-\u003emca_sources and improperly examine deleted tombstone entries.  Fix this by allocating a new tombstone node for pmc-\u003emca_tomb (as done in sf_setstate()) and retiring the original psf via kfree_rcu().",
  "id": "DEBIAN-CVE-2026-98102",
  "modified": "2026-09-26T04:47:40.977391723Z",
  "published": "2026-09-25T11:17:39.943Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-98102"
    }
  ],
  "upstream": [
    "CVE-2026-98102"
  ]
}