CVE-2025-68820 (GCVE-0-2025-68820)
Vulnerability from cvelistv5 – Published: 2026-01-13 15:29 – Updated: 2026-09-08 08:43
VLAI
EPSS
VEX
Title
ext4: xattr: fix null pointer deref in ext4_raw_inode()
Summary
In the Linux kernel, the following vulnerability has been resolved:
ext4: xattr: fix null pointer deref in ext4_raw_inode()
If ext4_get_inode_loc() fails (e.g. if it returns -EFSCORRUPTED),
iloc.bh will remain set to NULL. Since ext4_xattr_inode_dec_ref_all()
lacks error checking, this will lead to a null pointer dereference
in ext4_raw_inode(), called right after ext4_get_inode_loc().
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-16 16:55 UTC
Assigner
References
8 references
Impacted products
5 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
76c365fa7e2a8bb85f0190cdb4b8cdc99b2fdce3 , < b72a3476f0c97d02f63a6e9fff127348d55436f6
(git)
Affected: f737418b6de31c962c7192777ee4018906975383 , < 3d8d22e75f7edfa0b30ff27330fd6a1285d594c3 (git) Affected: cf9291a3449b04688b81e32621e88de8f4314b54 , < 190ad0f22ba49f1101182b80e3af50ca2ddfe72f (git) Affected: 362a90cecd36e8a5c415966d0b75b04a0270e4dd , < b5d942922182e82724b7152cb998f540132885ec (git) Affected: eb59cc31b6ea076021d14b04e7faab1636b87d0e , < 5b154e901fda2e98570b8f426a481f5740097dc2 (git) Affected: c8e008b60492cf6fd31ef127aea6d02fd3d314cd , < ce5f54c065a4a7cbb92787f4f140917112350142 (git) Affected: c8e008b60492cf6fd31ef127aea6d02fd3d314cd , < b97cb7d6a051aa6ebd57906df0e26e9e36c26d14 (git) Affected: 6aff941cb0f7d0c897c3698ad2e30672709135e3 (git) Affected: 3bc6317033f365ce578eb6039445fb66162722fd (git) Affected: 836e625b03a666cf93ff5be328c8cb30336db872 (git) Affected: 5.10.237 , < 5.10.248 (semver) Affected: 5.15.181 , < 5.15.198 (semver) Affected: 6.1.135 , < 6.1.160 (semver) Affected: 6.6.88 , < 6.6.120 (semver) Affected: 6.12.24 , < 6.12.64 (semver) Affected: 5.4.293 , < 5.5 (semver) Affected: 6.13.12 , < 6.14 (semver) Affected: 6.14.3 , < 6.15 (semver) |
guessed | |
| Linux | Linux |
Affected:
6.15
Unaffected: 0 , < 6.15 (semver) Unaffected: 5.10.248 , ≤ 5.10.* (semver) Unaffected: 5.15.198 , ≤ 5.15.* (semver) Unaffected: 6.1.160 , ≤ 6.1.* (semver) Unaffected: 6.6.120 , ≤ 6.6.* (semver) Unaffected: 6.12.64 , ≤ 6.12.* (semver) Unaffected: 6.18.3 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix) |
guessed | |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
guessed | |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
guessed | |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
guessed |
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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.
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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.
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