staging: vt6655: fix some erroneous memory clean-up loops
Noroxi assessment
Priority: Monitor (action score 22/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.22% (FIRST EPSS).
- Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: Linux Linux 2a2db520e3ca5aafba7c211abfd397666c9b5f9d, 637672a71f5016a40b0a6c0f3c8ad25eacedc8c3, 88b9cc60f26e8a05d1ddbddf91b09ca2915f20e0.
- Severity is disputed: the assigning authority (CNA) scores it 7.8, NVD 5.5.
Low priority for now. Upgrade to Linux Linux 2a2db520e3ca5aafba7c211abfd397666c9b5f9d, 637672a71f5016a40b0a6c0f3c8ad25eacedc8c3, 88b9cc60f26e8a05d1ddbddf91b09ca2915f20e0 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
In the Linux kernel, the following vulnerability has been resolved: staging: vt6655: fix some erroneous memory clean-up loops In some initialization functions of this driver, memory is allocated with 'i' acting as an index variable and increasing from 0. The commit in "Fixes" introduces some clean-up codes in case of allocation failure, which free memory in reverse order with 'i' decreasing to 0. However, there are some problems: - The case i=0 is left out. Thus memory is leaked. - In case memory allocation fails right from the start, the memory freeing loops will start with i=-1 and invalid memory locations will be accessed. One of these loops has been fixed in commit c8ff91535880 ("staging: vt6655: fix potential memory leak"). Fix the remaining erroneous loops.
- Published
- Sep 17, 2025
- Updated
- Aug 5, 2026
- EPSS
- 0.2% · 11th percentile
- CWE
- CWE-401
Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 22 / 40 · 5.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 5.5
- CNA · Linux
- 7.8
- 2.3 point gap
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- linux linux kernel4.18 and later · before 4.19.262
- linux linux kernel4.20 and later · before 5.4.220
- linux linux kernel5.5 and later · before 5.10.150
- linux linux kernel5.11 and later · before 5.15.75
- linux linux kernel5.16 and later · before 5.19.17
- linux linux kernel6.0 and later · before 6.0.3
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.
Linux Linux
- 4.18affected
- 5341ee0adb17d12a96dc5344e0d267cd12b52135 and later · before 637672a71f5016a40b0a6c0f3c8ad25eacedc8c3affected · git
- 5341ee0adb17d12a96dc5344e0d267cd12b52135 and later · before 88b9cc60f26e8a05d1ddbddf91b09ca2915f20e0affected · git
- 5341ee0adb17d12a96dc5344e0d267cd12b52135 and later · before 95ac62e8545be2b0a8cae0beef7c682e2e470e48affected · git
- 5341ee0adb17d12a96dc5344e0d267cd12b52135 and later · before f19e5b7df54590c831f350381963f25585c8f7d5affected · git
- 5341ee0adb17d12a96dc5344e0d267cd12b52135 and later · before a9e9806d1c315bc50dce05479a079b9a104474b8affected · git
- 5341ee0adb17d12a96dc5344e0d267cd12b52135 and later · before ed11b73c963292e7b49c0f37025c58ed3b7921d6affected · git
- 5341ee0adb17d12a96dc5344e0d267cd12b52135 and later · before 2a2db520e3ca5aafba7c211abfd397666c9b5f9daffected · git
- before 4.18not affected · semver
- 4.19.262 and later · up to and including 4.19.*not affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | linux | before 6.0.3-1 | 6.0.3-1 |
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV89Now
- CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV85Now
- CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV83Now
Published before and after this one in the same product
- ← EarlierCVE-2022-50353Sep 17, 2025 · mmc: wmt-sdmmc: fix return value check of mmc_add_host()22Monitor
- ← EarlierCVE-2022-50354Sep 17, 2025 · drm/amdkfd: Fix kfd_process_device_init_vm error handling22Monitor
- Later →CVE-2022-50356Sep 17, 2025 · net: sched: sfb: fix null pointer access issue when sfb_init() fails22Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Linux Linux | 2a2db520e3ca5aafba7c211abfd397666c9b5f9d | Vendor (CNA) |
| Linux Linux | 637672a71f5016a40b0a6c0f3c8ad25eacedc8c3 | Vendor (CNA) |
| Linux Linux | 88b9cc60f26e8a05d1ddbddf91b09ca2915f20e0 | Vendor (CNA) |
| Linux Linux | 95ac62e8545be2b0a8cae0beef7c682e2e470e48 | Vendor (CNA) |
| Linux Linux | a9e9806d1c315bc50dce05479a079b9a104474b8 | Vendor (CNA) |
| Linux Linux | ed11b73c963292e7b49c0f37025c58ed3b7921d6 | Vendor (CNA) |
| Linux Linux | f19e5b7df54590c831f350381963f25585c8f7d5 | Vendor (CNA) |
| debian:linux | 6.0.3-1 · Debian:12 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-401 · Missing Release of Memory after Effective LifetimeCVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (6 more)Show less
- git.kernel.org/stable/c/637672a71f5016a40b0a6c0f3c8ad25eacedc8c3
- git.kernel.org/stable/c/88b9cc60f26e8a05d1ddbddf91b09ca2915f20e0
- git.kernel.org/stable/c/95ac62e8545be2b0a8cae0beef7c682e2e470e48
- git.kernel.org/stable/c/a9e9806d1c315bc50dce05479a079b9a104474b8
- git.kernel.org/stable/c/ed11b73c963292e7b49c0f37025c58ed3b7921d6
- git.kernel.org/stable/c/f19e5b7df54590c831f350381963f25585c8f7d5
Vendor advisories and official records. Exploit/PoC links are deliberately left out.