{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-43888",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T15:31:59.160632Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-12T17:32:58.783Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "mm/list_lru.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4589f77c18dd98b65f45617b6d1e95313cf6fcab",
              "status": "affected",
              "version": "0a97c01cd20bb96359d8c9dedad92a061ed34e0b",
              "versionType": "git"
            },
            {
              "lessThan": "5161b48712dcd08ec427c450399d4d1483e21dea",
              "status": "affected",
              "version": "0a97c01cd20bb96359d8c9dedad92a061ed34e0b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "mm/list_lru.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.8"
            },
            {
              "lessThan": "6.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.11",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.10.5",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm: list_lru: fix UAF for memory cgroup\n\nThe mem_cgroup_from_slab_obj() is supposed to be called under rcu lock or\ncgroup_mutex or others which could prevent returned memcg from being\nfreed.  Fix it by adding missing rcu read lock.\n\nFound by code inspection.\n\n[songmuchun@bytedance.com: only grab rcu lock when necessary, per Vlastimil]"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerable code is reached through ordinary filesystem syscalls (open/stat/close/unlink driving d_lru_add/d_lru_del and inode LRU add/del) plus local cgroup manipulation to trigger the memcg teardown. No network peer can drive the memcg-free side of the race, so this requires local system access.\nAC:L - The attacker controls both sides of the race \u2014 one thread rmdirs a cgroup it created to force memcg offline and RCU-deferred free, while another thread loops dentry/inode LRU operations on objects charged to that memcg \u2014 and can retry indefinitely. On CONFIG_PREEMPT and especially PREEMPT_RT kernels (where list_lru_add\u0027s spin_lock is a sleeping rtmutex) the window between reading objcg-\u003ememcg and dereferencing it is readily hit.\nPR:L - Only an unprivileged local account is needed: the LRU paths are hit by unprivileged file operations with no capability check, and cgroup creation/removal is available to normal users via systemd\u0027s delegated user slice or to any container tenant. No real root is required anywhere on the path.\nUI:N - The attacker\u0027s own threads perform every step \u2014 populating a cgroup, tearing it down, and hammering the dentry/inode LRU paths. No victim action is involved.\nS:U - The use-after-free corrupts kernel memory managed by the same kernel security authority; there is no VM, IOMMU, or hypervisor boundary crossed.\nC:H - Reading memcg-\u003ekmemcg_id from freed memory steers list_lru_from_memcg_idx() into another cgroup\u0027s LRU, exposing and cross-linking objects across memcg boundaries, and a groomed reallocation of the freed mem_cgroup gives the attacker control over the pointer chain, which is leverageable for arbitrary kernel memory disclosure.\nI:H - set_shrinker_bit() performs set_bit() through memcg-\u003enodeinfo[nid]-\u003eshrinker_info read from the freed object, so a reallocated and attacker-controlled mem_cgroup turns this into a write primitive at a chosen address; the wrong-index list_add_tail()/list_del_init() also corrupt live list_lru state.\nA:H - A garbage kmemcg_id makes xa_load() return NULL and list_add_tail() dereference it, producing an immediate kernel oops, and the resulting list_lru list corruption and nr_items underflow crash the shrinker later \u2014 a repeatable panic on core dcache/icache paths."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:36:59.850Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4589f77c18dd98b65f45617b6d1e95313cf6fcab"
        },
        {
          "url": "https://git.kernel.org/stable/c/5161b48712dcd08ec427c450399d4d1483e21dea"
        }
      ],
      "title": "mm: list_lru: fix UAF for memory cgroup",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-43888",
    "datePublished": "2024-08-26T10:10:40.890Z",
    "dateReserved": "2024-08-17T09:11:59.288Z",
    "dateUpdated": "2026-08-05T11:36:59.850Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}