{
  "cveId": "CVE-2024-35846",
  "url": "https://patchblox.com/security/cve/CVE-2024-35846",
  "summary": "CVE-2024-35846 is fixed in linux on 1 platform, first by DEBIAN-CVE-2024-35846, released May 17, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  mm: zswap: fix shrinker NULL crash with cgroup_d...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  mm: zswap: fix shrinker NULL crash with cgroup_disable=memory  Christian reports a NULL deref in zswap that he bisected down to the zswap shrinker.  The issue also cropped up in the bug trackers of libguestfs [1] and the Red Hat bugzilla [2].  The problem is that when memcg is disabled with the boot time flag, the zswap shrinker might get called with sc-\u003Ememcg == NULL.  This is okay in many places, like the lruvec operations.  But it crashes in memcg_page_state() - which is only used due to the non-node accounting of cgroup\u0027s the zswap memory to begin with.  Nhat spotted that the memcg can be NULL in the memcg-disabled case, and I was then able to reproduce the crash locally as well.  [1] https://github.com/libguestfs/libguestfs/issues/139 [2] https://bugzilla.redhat.com/show_bug.cgi?id=2275252",
  "published": "2024-05-17T15:15:21Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.0019,
  "epssPercentile": 0.08693,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.8.9-1",
      "fix": "DEBIAN-CVE-2024-35846",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2024-35846",
      "released": "2024-05-17T15:15:21Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.8.9-1",
      "fix": "DEBIAN-CVE-2024-35846",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2024-35846",
      "released": "2024-05-17T15:15:21Z"
    }
  ],
  "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"
  }
}