CVE-2023-53608 (GCVE-0-2023-53608)

Vulnerability from cvelistv5 – Published: 2025-10-04 15:44 – Updated: 2026-08-05 09:15
VLAI
Title
nilfs2: fix potential UAF of struct nilfs_sc_info in nilfs_segctor_thread()
Summary
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix potential UAF of struct nilfs_sc_info in nilfs_segctor_thread() The finalization of nilfs_segctor_thread() can race with nilfs_segctor_kill_thread() which terminates that thread, potentially causing a use-after-free BUG as KASAN detected. At the end of nilfs_segctor_thread(), it assigns NULL to "sc_task" member of "struct nilfs_sc_info" to indicate the thread has finished, and then notifies nilfs_segctor_kill_thread() of this using waitqueue "sc_wait_task" on the struct nilfs_sc_info. However, here, immediately after the NULL assignment to "sc_task", it is possible that nilfs_segctor_kill_thread() will detect it and return to continue the deallocation, freeing the nilfs_sc_info structure before the thread does the notification. This fixes the issue by protecting the NULL assignment to "sc_task" and its notification, with spinlock "sc_state_lock" of the struct nilfs_sc_info. Since nilfs_segctor_kill_thread() does a final check to see if "sc_task" is NULL with "sc_state_lock" locked, this can eliminate the race.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 , < 034cce77d52ba013ce62b4f5258c29907eb1ada5 (git)
Affected: 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 , < 0dbf0e64b91ee8fcb278aea93eb06fc7d56ecbcc (git)
Affected: 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 , < 613bf23c070d11c525268f2945aa594704a9b764 (git)
Affected: 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 , < f32297dba338dc06d62286dedb3cdbd5175b1719 (git)
Affected: 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 , < 92684e02654c91a61a0b0561433b710bcece19fe (git)
Affected: 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 , < bae009a2f1b7c2011d2e92d8c84868d315c0b97e (git)
Affected: 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 , < b4d80bd6370b81a1725b6b8f7894802c23a14e9f (git)
Affected: 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 , < 6be49d100c22ffea3287a4b19d7639d259888e33 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.30
Unaffected: 0 , < 2.6.30 (semver)
Unaffected: 4.14.313 , ≤ 4.14.* (semver)
Unaffected: 4.19.281 , ≤ 4.19.* (semver)
Unaffected: 5.4.241 , ≤ 5.4.* (semver)
Unaffected: 5.10.178 , ≤ 5.10.* (semver)
Unaffected: 5.15.107 , ≤ 5.15.* (semver)
Unaffected: 6.1.24 , ≤ 6.1.* (semver)
Unaffected: 6.2.11 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/nilfs2/segment.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "034cce77d52ba013ce62b4f5258c29907eb1ada5",
              "status": "affected",
              "version": "9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453",
              "versionType": "git"
            },
            {
              "lessThan": "0dbf0e64b91ee8fcb278aea93eb06fc7d56ecbcc",
              "status": "affected",
              "version": "9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453",
              "versionType": "git"
            },
            {
              "lessThan": "613bf23c070d11c525268f2945aa594704a9b764",
              "status": "affected",
              "version": "9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453",
              "versionType": "git"
            },
            {
              "lessThan": "f32297dba338dc06d62286dedb3cdbd5175b1719",
              "status": "affected",
              "version": "9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453",
              "versionType": "git"
            },
            {
              "lessThan": "92684e02654c91a61a0b0561433b710bcece19fe",
              "status": "affected",
              "version": "9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453",
              "versionType": "git"
            },
            {
              "lessThan": "bae009a2f1b7c2011d2e92d8c84868d315c0b97e",
              "status": "affected",
              "version": "9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453",
              "versionType": "git"
            },
            {
              "lessThan": "b4d80bd6370b81a1725b6b8f7894802c23a14e9f",
              "status": "affected",
              "version": "9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453",
              "versionType": "git"
            },
            {
              "lessThan": "6be49d100c22ffea3287a4b19d7639d259888e33",
              "status": "affected",
              "version": "9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/nilfs2/segment.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.30"
            },
            {
              "lessThan": "2.6.30",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.313",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.281",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.241",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.107",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.24",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.*",
              "status": "unaffected",
              "version": "6.2.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.313",
                  "versionStartIncluding": "2.6.30",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.281",
                  "versionStartIncluding": "2.6.30",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.241",
                  "versionStartIncluding": "2.6.30",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.178",
                  "versionStartIncluding": "2.6.30",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.107",
                  "versionStartIncluding": "2.6.30",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.24",
                  "versionStartIncluding": "2.6.30",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2.11",
                  "versionStartIncluding": "2.6.30",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.3",
                  "versionStartIncluding": "2.6.30",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix potential UAF of struct nilfs_sc_info in nilfs_segctor_thread()\n\nThe finalization of nilfs_segctor_thread() can race with\nnilfs_segctor_kill_thread() which terminates that thread, potentially\ncausing a use-after-free BUG as KASAN detected.\n\nAt the end of nilfs_segctor_thread(), it assigns NULL to \"sc_task\" member\nof \"struct nilfs_sc_info\" to indicate the thread has finished, and then\nnotifies nilfs_segctor_kill_thread() of this using waitqueue\n\"sc_wait_task\" on the struct nilfs_sc_info.\n\nHowever, here, immediately after the NULL assignment to \"sc_task\", it is\npossible that nilfs_segctor_kill_thread() will detect it and return to\ncontinue the deallocation, freeing the nilfs_sc_info structure before the\nthread does the notification.\n\nThis fixes the issue by protecting the NULL assignment to \"sc_task\" and\nits notification, with spinlock \"sc_state_lock\" of the struct\nnilfs_sc_info.  Since nilfs_segctor_kill_thread() does a final check to\nsee if \"sc_task\" is NULL with \"sc_state_lock\" locked, this can eliminate\nthe race."
        }
      ],
      "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 race is only reachable through local filesystem operations \u2014 mount(2)/umount(2) of a nilfs2 volume (or the mount-time rollforward recovery attach/detach in nilfs_salvage_orphan_logs()). No network or peer-supplied data reaches nilfs_segctor_thread()/nilfs_segctor_kill_thread().\nAC:L - The attacker creates both sides of the race: the unmount/teardown request is what wakes the segctord kthread and drives it to end_thread, and the attempt can be repeated indefinitely via mount/unmount cycles (a recovery-requiring image makes even a plain mount start and kill the thread), with the preemption window widened by ordinary CPU contention.\nPR:L - An unprivileged local user reaches the teardown path on any ordinary desktop/kiosk through removable-media automount (udisks2/autofs mounts and unmounts a nilfs2 volume on the session user\u0027s behalf) or `user` fstab entries; no capability check is performed inside the racing code itself, consistent with other unmount-path filesystem teardown CVEs.\nUI:N - The attacker performs the mount/unmount cycling themselves; no separate victim has to open a file, run a command, or take any action for the race to be triggered.\nS:U - The use-after-free corrupts kernel heap memory within the same kernel security authority; no VM, IOMMU, container, or sandbox boundary is crossed.\nC:H - After kfree(sci) the kthread\u0027s wake_up() walks sci-\u003esc_wait_task\u0027s list from the freed ~kmalloc-512 slot, so a reclaiming spray lets the attacker steer the traversal and the curr-\u003efunc() indirect call, yielding kernel-memory disclosure; per UAF guidance this is High.\nI:H - wake_up() on the freed object performs a spinlock write into freed memory, list_del-style pointer writes on attacker-controlled list entries, and an indirect call through curr-\u003efunc \u2014 a write and control-flow-hijack primitive exploitable for privilege escalation.\nA:H - The bug was reported by syzbot as a KASAN-detected use-after-free BUG; locking and dereferencing freed slab memory reliably produces an oops or panic even without successful exploitation."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T09:15:06.157Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/034cce77d52ba013ce62b4f5258c29907eb1ada5"
        },
        {
          "url": "https://git.kernel.org/stable/c/0dbf0e64b91ee8fcb278aea93eb06fc7d56ecbcc"
        },
        {
          "url": "https://git.kernel.org/stable/c/613bf23c070d11c525268f2945aa594704a9b764"
        },
        {
          "url": "https://git.kernel.org/stable/c/f32297dba338dc06d62286dedb3cdbd5175b1719"
        },
        {
          "url": "https://git.kernel.org/stable/c/92684e02654c91a61a0b0561433b710bcece19fe"
        },
        {
          "url": "https://git.kernel.org/stable/c/bae009a2f1b7c2011d2e92d8c84868d315c0b97e"
        },
        {
          "url": "https://git.kernel.org/stable/c/b4d80bd6370b81a1725b6b8f7894802c23a14e9f"
        },
        {
          "url": "https://git.kernel.org/stable/c/6be49d100c22ffea3287a4b19d7639d259888e33"
        }
      ],
      "title": "nilfs2: fix potential UAF of struct nilfs_sc_info in nilfs_segctor_thread()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53608",
    "datePublished": "2025-10-04T15:44:17.302Z",
    "dateReserved": "2025-10-04T15:40:38.480Z",
    "dateUpdated": "2026-08-05T09:15:06.157Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-53608",
      "date": "2026-09-23",
      "epss": "0.00149",
      "percentile": "0.04471"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "fs/nilfs2/segment.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "034cce77d52ba013ce62b4f5258c29907eb1ada5",
                    "status": "affected",
                    "version": "9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "0dbf0e64b91ee8fcb278aea93eb06fc7d56ecbcc",
                    "status": "affected",
                    "version": "9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "613bf23c070d11c525268f2945aa594704a9b764",
                    "status": "affected",
                    "version": "9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "f32297dba338dc06d62286dedb3cdbd5175b1719",
                    "status": "affected",
                    "version": "9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "92684e02654c91a61a0b0561433b710bcece19fe",
                    "status": "affected",
                    "version": "9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "bae009a2f1b7c2011d2e92d8c84868d315c0b97e",
                    "status": "affected",
                    "version": "9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "b4d80bd6370b81a1725b6b8f7894802c23a14e9f",
                    "status": "affected",
                    "version": "9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "6be49d100c22ffea3287a4b19d7639d259888e33",
                    "status": "affected",
                    "version": "9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "fs/nilfs2/segment.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "2.6.30"
                  },
                  {
                    "lessThan": "2.6.30",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "4.14.*",
                    "status": "unaffected",
                    "version": "4.14.313",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "4.19.*",
                    "status": "unaffected",
                    "version": "4.19.281",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.4.*",
                    "status": "unaffected",
                    "version": "5.4.241",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.178",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.107",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.24",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.2.*",
                    "status": "unaffected",
                    "version": "6.2.11",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.3",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "C7897F33-089A-45DB-B407-301671DC567B",
                    "versionEndExcluding": "4.14.313",
                    "versionStartIncluding": "2.6.30",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "FA9A5EE5-EA8C-4F9C-8205-020D45B82C9B",
                    "versionEndExcluding": "4.19.281",
                    "versionStartIncluding": "4.15",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A6C89301-5E43-4A77-878F-AC2043FD2741",
                    "versionEndExcluding": "5.4.241",
                    "versionStartIncluding": "4.20",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "896B51EF-6427-4DFF-A2CA-819B349840A1",
                    "versionEndExcluding": "5.10.178",
                    "versionStartIncluding": "5.5",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6BCC0C73-754E-4985-A087-F74888650709",
                    "versionEndExcluding": "5.15.107",
                    "versionStartIncluding": "5.11",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E6EC432F-985F-450F-954E-7EAD42ADA1F8",
                    "versionEndExcluding": "6.1.24",
                    "versionStartIncluding": "5.16",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "93C03C9A-798F-4CD5-912F-A436BFA0CC7E",
                    "versionEndExcluding": "6.2.11",
                    "versionStartIncluding": "6.2",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:6.3:rc1:*:*:*:*:*:*",
                    "matchCriteriaId": "B8E3B0E8-FA27-4305-87BB-AF6C25B160CB",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:6.3:rc2:*:*:*:*:*:*",
                    "matchCriteriaId": "A47F0FC3-CE52-4BA1-BA51-22F783938431",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:6.3:rc3:*:*:*:*:*:*",
                    "matchCriteriaId": "3583026A-27EC-4A4C-850A-83F2AF970673",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:6.3:rc4:*:*:*:*:*:*",
                    "matchCriteriaId": "DC271202-7570-4505-89A4-D602D47BFD00",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:6.3:rc5:*:*:*:*:*:*",
                    "matchCriteriaId": "D413BB6D-4F74-4C7D-9163-47786619EF53",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix potential UAF of struct nilfs_sc_info in nilfs_segctor_thread()\n\nThe finalization of nilfs_segctor_thread() can race with\nnilfs_segctor_kill_thread() which terminates that thread, potentially\ncausing a use-after-free BUG as KASAN detected.\n\nAt the end of nilfs_segctor_thread(), it assigns NULL to \"sc_task\" member\nof \"struct nilfs_sc_info\" to indicate the thread has finished, and then\nnotifies nilfs_segctor_kill_thread() of this using waitqueue\n\"sc_wait_task\" on the struct nilfs_sc_info.\n\nHowever, here, immediately after the NULL assignment to \"sc_task\", it is\npossible that nilfs_segctor_kill_thread() will detect it and return to\ncontinue the deallocation, freeing the nilfs_sc_info structure before the\nthread does the notification.\n\nThis fixes the issue by protecting the NULL assignment to \"sc_task\" and\nits notification, with spinlock \"sc_state_lock\" of the struct\nnilfs_sc_info.  Since nilfs_segctor_kill_thread() does a final check to\nsee if \"sc_task\" is NULL with \"sc_state_lock\" locked, this can eliminate\nthe race."
          }
        ],
        "id": "CVE-2023-53608",
        "lastModified": "2026-08-04T10:19:14.360",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2025-10-04T16:15:57.527",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/034cce77d52ba013ce62b4f5258c29907eb1ada5"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/0dbf0e64b91ee8fcb278aea93eb06fc7d56ecbcc"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/613bf23c070d11c525268f2945aa594704a9b764"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/6be49d100c22ffea3287a4b19d7639d259888e33"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/92684e02654c91a61a0b0561433b710bcece19fe"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/b4d80bd6370b81a1725b6b8f7894802c23a14e9f"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/bae009a2f1b7c2011d2e92d8c84868d315c0b97e"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/f32297dba338dc06d62286dedb3cdbd5175b1719"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-416"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:29:43+00:00",
      "cve": "CVE-2023-53608",
      "id": "CVE-2023-53608",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: nilfs2: fix potential UAF of struct nilfs_sc_info in nilfs_segctor_thread()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53608.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-11T16:46:36Z",
      "cve": "CVE-2023-53608",
      "id": "CVE-2023-53608",
      "initial_release_date": "2025-10-07T00:47:26Z",
      "product_status:known_affected": "475",
      "product_status:known_not_affected": "282",
      "product_status:recommended": "196",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-53608",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-53608.json",
      "version": "29"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.