cachefiles: fix slab-use-after-free in cachefiles_withdraw_cookie()

{
  "id": "b4e6dd21b536fbeaf891cac1bbef2c3206e389cab08150703dd4920833ce904c",
  "url": "https://osv.dev/vulnerability/CVE-2024-41057",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "cachefiles: fix slab-use-after-free in cachefiles_withdraw_cookie()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: cachefiles: fix slab-use-after-free in cachefiles_withdraw_cookie() We got the following issue in our fault injection stress test: ================================================================== BUG: KASAN: slab-use-after-free in cachefiles_withdraw_cookie+0x4d9/0x600 Read of size 8 at addr ffff888118efc000 by task kworker/u78:0/109 CPU: 13 PID: 109 Comm: kworker/u78:0 Not tainted 6.8.0-dirty #566 Call Trace: kasan_report+0x93/0xc0 cachefiles_withdraw_cookie+0x4d9/0x600 fscache_cookie_state_machine+0x5c8/0x1230 fscache_cookie_worker+0x91/0x1c0 process_one_work+0x7fa/0x1800 [...] Allocated by task 117: kmalloc_trace+0x1b3/0x3c0 cachefiles_acquire_volume+0xf3/0x9c0 fscache_create_volume_work+0x97/0x150 process_one_work+0x7fa/0x1800 [...] Freed by task 120301: kfree+0xf1/0x2c0 cachefiles_withdraw_cache+0x3fa/0x920 cachefiles_put_unbind_pincount+0x1f6/0x250 cachefiles_daemon_release+0x13b/0x290 __fput+0x204/0xa00 task_work_run+0x139/0x230 do_exit+0x87a/0x29b0 [...] ================================================================== Following is the process that triggers the issue: p1 | p2 ------------------------------------------------------------ fscache_begin_lookup fscache_begin_volume_access fscache_cache_is_live(fscache_cache) cachefiles_daemon_release cachefiles_put_unbind_pincount cachefiles_daemon_unbind cachefiles_withdraw_cache fscache_withdraw_cache fscache_set_cache_state(cache, FSCACHE_CACHE_IS_WI",
    "evidence": "osv:CVE-2024-41057",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.101",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.42",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.9.11",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2024-41057",
      "aliases": [
        "CVE-2024-41057"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "fe2140e2f57fef8562e0f9b7cd447d2b08dc2f35"
                },
                {
                  "fixed": "8de253177112a47c9af157d23ae934779188b4e1"
                },
                {
                  "fixed": "9e67589a4a7b7e5660b524d1d5fe61242bcbcc11"
                },
                {
                  "fixed": "ef81340401e8a371d6b17f69e76d861920972cfe"
                },
                {
                  "fixed": "5d8f805789072ea7fd39504694b7bd17e5f751c4"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-41057.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.17.0"
                },
                {
                  "fixed": "6.1.101"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.42"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.9.11"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-41057.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:52.749505894Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/5d8f805789072ea7fd39504694b7bd17e5f751c4",
        "https://git.kernel.org/stable/c/8de253177112a47c9af157d23ae934779188b4e1",
        "https://git.kernel.org/stable/c/9e67589a4a7b7e5660b524d1d5fe61242bcbcc11",
        "https://git.kernel.org/stable/c/ef81340401e8a371d6b17f69e76d861920972cfe",
        "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/41xxx/CVE-2024-41057.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-41057",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/41xxx/CVE-2024-41057.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-41057",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 521552,
  "published_at": "2024-07-29T14:57:19.938+00:00"
}