CVE-2024-48881 (GCVE-0-2024-48881)

Vulnerability from cvelistv5 – Published: 2025-01-11 12:25 – Updated: 2026-10-15 00:53
VLAI
Title
bcache: revert replacing IS_ERR_OR_NULL with IS_ERR again
Summary
In the Linux kernel, the following vulnerability has been resolved: bcache: revert replacing IS_ERR_OR_NULL with IS_ERR again Commit 028ddcac477b ("bcache: Remove unnecessary NULL point check in node allocations") leads a NULL pointer deference in cache_set_flush(). 1721 if (!IS_ERR_OR_NULL(c->root)) 1722 list_add(&c->root->list, &c->btree_cache); >From the above code in cache_set_flush(), if previous registration code fails before allocating c->root, it is possible c->root is NULL as what it is initialized. __bch_btree_node_alloc() never returns NULL but c->root is possible to be NULL at above line 1721. This patch replaces IS_ERR() by IS_ERR_OR_NULL() to fix this.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:55 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7067 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 0729029e647234fa1a94376b6edffec5c2cd75f6 , < 4379c5828492a4c2a651c8f826a01453bd2b80b0 (git)
Affected: db9439cef0b5efccf8021fe89f4953e0f901e85b , < 336e30f32ae7c043fde0f6fa21586ff30bea9fe2 (git)
Affected: 991e9c186a8ac6ab272a86e0ddc6f9733c38b867 , < fb5fee35bdd18316a84b5f30881a24e1415e1464 (git)
Affected: 68118c339c6e1e16ae017bef160dbe28a27ae9c8 , < 5202391970ffbf81975251b3526b890ba027b715 (git)
Affected: 028ddcac477b691dd9205c92f991cc15259d033e , < cc05aa2c0117e20fa25a3c0d915f98b8f2e78667 (git)
Affected: 028ddcac477b691dd9205c92f991cc15259d033e , < 5e0e913624bcd24f3de414475018d3023f060ee1 (git)
Affected: 028ddcac477b691dd9205c92f991cc15259d033e , < b2e382ae12a63560fca35050498e19e760adf8c0 (git)
Affected: fe75e8a0c20127a8dc95704f1a7ad6b82c9a0ef8 (git)
Affected: 0cabf9e164660e8d66c4810396046383a1110a69 (git)
Affected: 5.4.251 , < 5.4.287 (semver)
Affected: 5.10.188 , < 5.10.231 (semver)
Affected: 5.15.121 , < 5.15.174 (semver)
Affected: 6.1.39 , < 6.1.120 (semver)
Affected: 4.19.291 , < 4.20 (semver)
Affected: 6.4.4 , < 6.5 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 6.5
Unaffected: 0 , < 6.5 (semver)
Unaffected: 5.4.287 , ≤ 5.4.* (semver)
Unaffected: 5.10.231 , ≤ 5.10.* (semver)
Unaffected: 5.15.174 , ≤ 5.15.* (semver)
Unaffected: 6.1.120 , ≤ 6.1.* (semver)
Unaffected: 6.6.66 , ≤ 6.6.* (semver)
Unaffected: 6.12.5 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
Siemens RUGGEDCOM RST2428P Affected: 0 , < V3.2 (custom)
guessed Create a notification for this product.
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Affected: 0 , < V3.2 (custom)
guessed Create a notification for this product.
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family Affected: 0 , < V3.2 (custom)
guessed Create a notification for this product.
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                  "versionType": "git"
                },
                {
                  "lessThan": "fb5fee35bdd18316a84b5f30881a24e1415e1464",
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                  "version": "991e9c186a8ac6ab272a86e0ddc6f9733c38b867",
                  "versionType": "git"
                },
                {
                  "lessThan": "5202391970ffbf81975251b3526b890ba027b715",
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                },
                {
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                },
                {
                  "lessThan": "5e0e913624bcd24f3de414475018d3023f060ee1",
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                },
                {
                  "lessThan": "b2e382ae12a63560fca35050498e19e760adf8c0",
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                  "versionType": "git"
                },
                {
                  "status": "affected",
                  "version": "fe75e8a0c20127a8dc95704f1a7ad6b82c9a0ef8",
                  "versionType": "git"
                },
                {
                  "status": "affected",
                  "version": "0cabf9e164660e8d66c4810396046383a1110a69",
                  "versionType": "git"
                },
                {
                  "lessThan": "5.4.287",
                  "status": "affected",
                  "version": "5.4.251",
                  "versionType": "semver"
                },
                {
                  "lessThan": "5.10.231",
                  "status": "affected",
                  "version": "5.10.188",
                  "versionType": "semver"
                },
                {
                  "lessThan": "5.15.174",
                  "status": "affected",
                  "version": "5.15.121",
                  "versionType": "semver"
                },
                {
                  "lessThan": "6.1.120",
                  "status": "affected",
                  "version": "6.1.39",
                  "versionType": "semver"
                },
                {
                  "lessThan": "4.20",
                  "status": "affected",
                  "version": "4.19.291",
                  "versionType": "semver"
                },
                {
                  "lessThan": "6.5",
                  "status": "affected",
                  "version": "6.4.4",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "drivers/md/bcache/super.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "6.5"
                },
                {
                  "lessThan": "6.5",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.4.*",
                  "status": "unaffected",
                  "version": "5.4.287",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.231",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.174",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.120",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.66",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.12.*",
                  "status": "unaffected",
                  "version": "6.12.5",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.13",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.4.287",
                      "versionStartIncluding": "5.4.251",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.231",
                      "versionStartIncluding": "5.10.188",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.174",
                      "versionStartIncluding": "5.15.121",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.120",
                      "versionStartIncluding": "6.1.39",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.66",
                      "versionStartIncluding": "6.5",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.12.5",
                      "versionStartIncluding": "6.5",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.13",
                      "versionStartIncluding": "6.5",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "4.19.291",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "6.4.4",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbcache: revert replacing IS_ERR_OR_NULL with IS_ERR again\n\nCommit 028ddcac477b (\"bcache: Remove unnecessary NULL point check in\nnode allocations\") leads a NULL pointer deference in cache_set_flush().\n\n1721         if (!IS_ERR_OR_NULL(c-\u003eroot))\n1722                 list_add(\u0026c-\u003eroot-\u003elist, \u0026c-\u003ebtree_cache);\n\n\u003eFrom the above code in cache_set_flush(), if previous registration code\nfails before allocating c-\u003eroot, it is possible c-\u003eroot is NULL as what\nit is initialized. __bch_btree_node_alloc() never returns NULL but\nc-\u003eroot is possible to be NULL at above line 1721.\n\nThis patch replaces IS_ERR() by IS_ERR_OR_NULL() to fix this."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-23T15:53:54.293Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/4379c5828492a4c2a651c8f826a01453bd2b80b0"
            },
            {
              "url": "https://git.kernel.org/stable/c/336e30f32ae7c043fde0f6fa21586ff30bea9fe2"
            },
            {
              "url": "https://git.kernel.org/stable/c/fb5fee35bdd18316a84b5f30881a24e1415e1464"
            },
            {
              "url": "https://git.kernel.org/stable/c/5202391970ffbf81975251b3526b890ba027b715"
            },
            {
              "url": "https://git.kernel.org/stable/c/cc05aa2c0117e20fa25a3c0d915f98b8f2e78667"
            },
            {
              "url": "https://git.kernel.org/stable/c/5e0e913624bcd24f3de414475018d3023f060ee1"
            },
            {
              "url": "https://git.kernel.org/stable/c/b2e382ae12a63560fca35050498e19e760adf8c0"
            }
          ],
          "title": "bcache: revert replacing IS_ERR_OR_NULL with IS_ERR again",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-48881",
        "datePublished": "2025-01-11T12:25:18.614Z",
        "dateReserved": "2025-01-09T09:50:31.739Z",
        "dateUpdated": "2026-10-15T00:53:14.555Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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