Common Weakness Enumeration
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CWE-908
Use of Uninitialized Resource
The product uses or accesses a resource that has not been initialized.
CVE-2026-6686 (GCVE-0-2026-6686)
Vulnerability from cvelistv5 – Published: 2026-07-01 13:55 – Updated: 2026-07-01 15:05
VLAI
Title
FatFs Use of Uninitialized Clusters After Seek Past EOF
Summary
FatFs R0.16 and earlier contains an uninitialized cluster exposure when f_lseek() extends files beyond EOF without zero-filling newly allocated clusters. This maps to CWE-908 (Use of Uninitialized Resource). Estimated CVSS v3.1 vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N (4.6, Medium). The estimated CISA SSVC vectors are Exploitation: PoC, Technical Impact: Partial.
Severity
4.6 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-908 - Use of uninitialized resource
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.runzero.com/blog/fatfs-bugs/ | third-party-advisory |
| https://github.com/runZeroInc/vulns-2026-fatfs-chance | technical-description |
| https://elm-chan.org/fsw/ff/ | product |
| https://www.runzero.com/advisories/fatfs-uninit-c… | third-party-advisory |
Date Public
2026-07-01 13:00
Credits
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CVE-2026-7141 (GCVE-0-2026-7141)
Vulnerability from cvelistv5 – Published: 2026-04-27 16:45 – Updated: 2026-04-27 17:41 X_Open Source
VLAI
Title
vllm KV Block kv_cache_interface.py has_mamba_layers uninitialized resource
Summary
A vulnerability was found in vllm up to 0.19.0. The affected element is the function has_mamba_layers of the file vllm/v1/kv_cache_interface.py of the component KV Block Handler. Performing a manipulation results in uninitialized resource. It is possible to initiate the attack remotely. The attack is considered to have high complexity. The exploitability is described as difficult. The exploit has been made public and could be used. The patch is named 1ad67864c0c20f167929e64c875f5c28e1aad9fd. To fix this issue, it is recommended to deploy a patch.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-908 - Uninitialized Resource
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/359740 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/359740/cti | signaturepermissions-required |
| https://vuldb.com/submit/801297 | third-party-advisory |
| https://github.com/vllm-project/vllm/issues/39146 | issue-tracking |
| https://github.com/vllm-project/vllm/pull/39283 | issue-trackingpatch |
| https://github.com/vllm-project/vllm/issues/39146… | exploitissue-tracking |
| https://github.com/AjAnubolu/vllm/commit/1ad67864… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | vllm |
Affected:
0.1
Affected: 0.2 Affected: 0.3 Affected: 0.4 Affected: 0.5 Affected: 0.6 Affected: 0.7 Affected: 0.8 Affected: 0.9 Affected: 0.10 Affected: 0.11 Affected: 0.12 Affected: 0.13 Affected: 0.14 Affected: 0.15 Affected: 0.16 Affected: 0.17 Affected: 0.18 Affected: 0.19.0 cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:* |
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Mitigation
Phase: Implementation
Description:
- Explicitly initialize the resource before use. If this is performed through an API function or standard procedure, follow all required steps.
Mitigation
Phase: Implementation
Description:
- Pay close attention to complex conditionals that affect initialization, since some branches might not perform the initialization.
Mitigation
Phase: Implementation
Description:
- Avoid race conditions (CWE-362) during initialization routines.
Mitigation
Phase: Build and Compilation
Description:
- Run or compile the product with settings that generate warnings about uninitialized variables or data.
No CAPEC attack patterns related to this CWE.