CVE-2024-48881 (GCVE-0-2024-48881)
Vulnerability from cvelistv5 – Published: 2025-01-11 12:25 – Updated: 2026-10-15 00:53
VLAI
EPSS
VEX
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)
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
References
11 references
Impacted products
8 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 | |
| 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 | |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.0 , < V3.1.5
(custom)
|
guessed | |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.0 , < V3.1.5
(custom)
|
guessed | |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.0 , < V3.1.5
(custom)
|
guessed | |
| Siemens | RUGGEDCOM RST2428P |
Affected:
0 , < V3.2
(custom)
|
guessed | |
| Siemens | SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family |
Affected:
0 , < V3.2
(custom)
|
guessed | |
| Siemens | SCALANCE XCM-/XRM-/XCH-/XRH-300 family |
Affected:
0 , < V3.2
(custom)
|
guessed |
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"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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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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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.