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CVE-2024-42315 (GCVE-0-2024-42315)

Vulnerability from cvelistv5 – Published: 2024-08-17 09:09 – Updated: 2026-05-23 15:52
VLAI
Title
exfat: fix potential deadlock on __exfat_get_dentry_set
Summary
In the Linux kernel, the following vulnerability has been resolved: exfat: fix potential deadlock on __exfat_get_dentry_set When accessing a file with more entries than ES_MAX_ENTRY_NUM, the bh-array is allocated in __exfat_get_entry_set. The problem is that the bh-array is allocated with GFP_KERNEL. It does not make sense. In the following cases, a deadlock for sbi->s_lock between the two processes may occur. CPU0 CPU1 ---- ---- kswapd balance_pgdat lock(fs_reclaim) exfat_iterate lock(&sbi->s_lock) exfat_readdir exfat_get_uniname_from_ext_entry exfat_get_dentry_set __exfat_get_dentry_set kmalloc_array ... lock(fs_reclaim) ... evict exfat_evict_inode lock(&sbi->s_lock) To fix this, let's allocate bh-array with GFP_NOFS.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 16:09 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: bd3bdb9e0d656f760b11d0c638d35d7f7068144d , < 632fb232b6bbf8277edcbe9ecd4b4d98ecb122eb (git)
Affected: 92dcd7d6c6068bf4fd35a6f64d606e27d634807e , < c052f775ee6ccacd3c97e4cf41a2a657e63d4259 (git)
Affected: d8fe01ad2d8ab33aaf8f2efad9e8f1dae11c4b0c , < cd1c7858641384191ff7033fb1fc65dfcd559c6f (git)
Affected: a3ff29a95fde16906304455aa8c0bd84eb770258 , < a7ac198f8dba791e3144c4da48a5a9b95773ee4b (git)
Affected: a3ff29a95fde16906304455aa8c0bd84eb770258 , < 1d1970493c289e3f44b9ec847ed26a5dbdf56a62 (git)
Affected: a3ff29a95fde16906304455aa8c0bd84eb770258 , < 89fc548767a2155231128cb98726d6d2ea1256c9 (git)
Affected: 5.10.190 , < 5.10.232 (semver)
Affected: 5.15.150 , < 5.15.175 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 6.2
Unaffected: 0 , < 6.2 (semver)
Unaffected: 5.10.232 , ≤ 5.10.* (semver)
Unaffected: 5.15.175 , ≤ 5.15.* (semver)
Unaffected: 6.6.44 , ≤ 6.6.* (semver)
Unaffected: 6.10.3 , ≤ 6.10.* (semver)
Unaffected: 6.11 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T08:02:29+00:00",
      "cve": "CVE-2024-42315",
      "id": "CVE-2024-42315",
      "initial_release_date": "2024-08-17T00:00:00+00:00",
      "product_status:fixed": "305",
      "product_status:known_affected": "22",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: exfat: fix potential deadlock on __exfat_get_dentry_set",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-42315.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2025-11-03T20:38:38.291Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
              },
              {
                "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2024-42315",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2024-09-10T16:09:45.977516Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2024-09-11T12:42:23.407Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "fs/exfat/dir.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "632fb232b6bbf8277edcbe9ecd4b4d98ecb122eb",
                  "status": "affected",
                  "version": "bd3bdb9e0d656f760b11d0c638d35d7f7068144d",
                  "versionType": "git"
                },
                {
                  "lessThan": "c052f775ee6ccacd3c97e4cf41a2a657e63d4259",
                  "status": "affected",
                  "version": "92dcd7d6c6068bf4fd35a6f64d606e27d634807e",
                  "versionType": "git"
                },
                {
                  "lessThan": "cd1c7858641384191ff7033fb1fc65dfcd559c6f",
                  "status": "affected",
                  "version": "d8fe01ad2d8ab33aaf8f2efad9e8f1dae11c4b0c",
                  "versionType": "git"
                },
                {
                  "lessThan": "a7ac198f8dba791e3144c4da48a5a9b95773ee4b",
                  "status": "affected",
                  "version": "a3ff29a95fde16906304455aa8c0bd84eb770258",
                  "versionType": "git"
                },
                {
                  "lessThan": "1d1970493c289e3f44b9ec847ed26a5dbdf56a62",
                  "status": "affected",
                  "version": "a3ff29a95fde16906304455aa8c0bd84eb770258",
                  "versionType": "git"
                },
                {
                  "lessThan": "89fc548767a2155231128cb98726d6d2ea1256c9",
                  "status": "affected",
                  "version": "a3ff29a95fde16906304455aa8c0bd84eb770258",
                  "versionType": "git"
                },
                {
                  "lessThan": "5.10.232",
                  "status": "affected",
                  "version": "5.10.190",
                  "versionType": "semver"
                },
                {
                  "lessThan": "5.15.175",
                  "status": "affected",
                  "version": "5.15.150",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "fs/exfat/dir.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "6.2"
                },
                {
                  "lessThan": "6.2",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.232",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.175",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.44",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.10.*",
                  "status": "unaffected",
                  "version": "6.10.3",
                  "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": "5.10.232",
                      "versionStartIncluding": "5.10.190",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.175",
                      "versionStartIncluding": "5.15.150",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.44",
                      "versionStartIncluding": "6.2",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.10.3",
                      "versionStartIncluding": "6.2",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.11",
                      "versionStartIncluding": "6.2",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nexfat: fix potential deadlock on __exfat_get_dentry_set\n\nWhen accessing a file with more entries than ES_MAX_ENTRY_NUM, the bh-array\nis allocated in __exfat_get_entry_set. The problem is that the bh-array is\nallocated with GFP_KERNEL. It does not make sense. In the following cases,\na deadlock for sbi-\u003es_lock between the two processes may occur.\n\n       CPU0                CPU1\n       ----                ----\n  kswapd\n   balance_pgdat\n    lock(fs_reclaim)\n                      exfat_iterate\n                       lock(\u0026sbi-\u003es_lock)\n                       exfat_readdir\n                        exfat_get_uniname_from_ext_entry\n                         exfat_get_dentry_set\n                          __exfat_get_dentry_set\n                           kmalloc_array\n                            ...\n                            lock(fs_reclaim)\n    ...\n    evict\n     exfat_evict_inode\n      lock(\u0026sbi-\u003es_lock)\n\nTo fix this, let\u0027s allocate bh-array with GFP_NOFS."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-23T15:52:53.654Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/632fb232b6bbf8277edcbe9ecd4b4d98ecb122eb"
            },
            {
              "url": "https://git.kernel.org/stable/c/c052f775ee6ccacd3c97e4cf41a2a657e63d4259"
            },
            {
              "url": "https://git.kernel.org/stable/c/cd1c7858641384191ff7033fb1fc65dfcd559c6f"
            },
            {
              "url": "https://git.kernel.org/stable/c/a7ac198f8dba791e3144c4da48a5a9b95773ee4b"
            },
            {
              "url": "https://git.kernel.org/stable/c/1d1970493c289e3f44b9ec847ed26a5dbdf56a62"
            },
            {
              "url": "https://git.kernel.org/stable/c/89fc548767a2155231128cb98726d6d2ea1256c9"
            }
          ],
          "title": "exfat: fix potential deadlock on __exfat_get_dentry_set",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-42315",
        "datePublished": "2024-08-17T09:09:23.779Z",
        "dateReserved": "2024-07-30T07:40:12.278Z",
        "dateUpdated": "2026-05-23T15:52:53.654Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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

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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.


Detection rules are retrieved from Rulezet.


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.