{
  "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"
            },
            {
              "fixed": "6.12.113-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.2.11-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  net/sched: em_text: reject unterminated algo before autoload  This is a follow-up to commit 9c572a83037a (\"net/sched: fix potential stack infoleak in em_text_dump()\"), which zero-initialised the dump-side struct. Sashiko pointed at a pre-existing bug that exposed the change-side input-validation gap open.  em_text_change() casts the raw netlink attribute payload to struct tcf_em_text and passes conf-\u003ealgo, a 16-byte array with no enforced NUL terminator, to textsearch_prepare().  On the TS_AUTOLOAD retry textsearch_prepare() calls request_module(\"ts_%s\", algo); vsnprintf() walks %s until it finds a NUL, so an algo[] with no NUL reads past the array into the adjacent struct fields and payload and feeds those bytes to the usermode helper command line.  This is an out-of-bounds read and a kernel memory disclosure.  Reject the attribute when no NUL exists within TC_EM_TEXT_ALGOSIZ bytes, matching the check xt_string has had since 3ab720881b6e.  Conditions to recreate the bug: - CAP_NET_ADMIN on the target netns (namespace-local via unshare -Urn   is enough) - install clsact on an interface, then add a basic filter with one text   ematch whose algo[] is 16 bytes with no NUL (e.g. \"A\"*16) and   pattern_len at least 1 - the add fails with -ENOENT and the kernel invokes modprobe with a   module name made of \"ts_\" plus the 16 bytes and the adjacent payload",
  "id": "DEBIAN-CVE-2026-98969",
  "modified": "2026-10-24T05:47:27.301233287Z",
  "published": "2026-10-23T13:17:18.440Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-98969"
    }
  ],
  "upstream": [
    "CVE-2026-98969"
  ]
}