Memory corruption in Qualcomm IPC due to buffer copy without checking the size of input while starting communication with a compromised kern
Memory corruption in Qualcomm IPC due to buffer copy without checking the size of input while starting communication with a compromised kernel. in Snapdragon Mobile
- Published
- Oct 19, 2022
- Updated
- Jun 17, 2026
- EPSS
- 0.1% · 2th percentile
- CWE
- CWE-120
Sign in to follow · You’ll be notified if a followed record enters KEV, gets an exploit or is updated.
Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.1%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 7.8
- CNA · qualcomm
- 7.8
- agree
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| qualcomm | sd 8 gen1 5g firmware | cpe:2.3:o:qualcomm:sd_8_gen1_5g_firmware |
| qualcomm | sm8475 | cpe:2.3:h:qualcomm:sm8475 |
| qualcomm | wcd9380 firmware | cpe:2.3:o:qualcomm:wcd9380_firmware |
| qualcomm | wcd9380 | cpe:2.3:h:qualcomm:wcd9380 |
| qualcomm | wcn6855 firmware | cpe:2.3:o:qualcomm:wcn6855_firmware |
| qualcomm | wcn6855 | cpe:2.3:h:qualcomm:wcn6855 |
| qualcomm | wcn6856 firmware | cpe:2.3:o:qualcomm:wcn6856_firmware |
| qualcomm | wcn6856 | cpe:2.3:h:qualcomm:wcn6856 |
| qualcomm | wcn7850 firmware | cpe:2.3:o:qualcomm:wcn7850_firmware |
| qualcomm | wcn7850 | cpe:2.3:h:qualcomm:wcn7850 |
| qualcomm | wcn7851 firmware | cpe:2.3:o:qualcomm:wcn7851_firmware |
| qualcomm | wcn7851 | cpe:2.3:h:qualcomm:wcn7851 |
and 4 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- qualcomm sd 8 gen1 5g firmwareall versions
- qualcomm wcd9380 firmwareall versions
- qualcomm wcn6855 firmwareall versions
- qualcomm wcn6856 firmwareall versions
- qualcomm wcn7850 firmwareall versions
- qualcomm wcn7851 firmwareall versions
- qualcomm wsa8830 firmwareall versions
- qualcomm wsa8835 firmwareall versions
Versions reported by the vendor
Affected version ranges reported by the assigning authority (qualcomm). Independent of NVD's CPE analysis and usually ahead of it.
Qualcomm, Inc. Snapdragon Mobile
- SD 8 Gen1 5G, WCD9380, WCN6855, WCN6856, WCN7850, WCN7851, WSA8830, WSA8835affected
Same product
qualcomm: all recordsOther highest-scoring records for the same primary product.
- CVE-2022-25708Memory corruption in WLAN due to buffer copy without checking size of input while parsing keys in Snapdragon Connectivity, Snapdragon Mobile39Monitor
- CVE-2021-35110Possible buffer overflow to improper validation of hash segment of file while allocating memory in Snapdragon Connectivity, Snapdragon Mobil35Monitor
- CVE-2022-40540Buffer copy without checking the size of input in Linux Kernel31Monitor
- CVE-2022-25698Memory corruption in SPI buses due to improper input validation while reading address configuration from spi buses in Snapdragon Mobile, Sna31Monitor
- CVE-2022-25697Memory corruption in i2c buses due to improper input validation while reading address configuration from i2c driver in Snapdragon Mobile, Sn31Monitor
- CVE-2022-25723Memory corruption in multimedia due to use after free during callback registration failure in Snapdragon Mobile31Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
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
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Root cause
When data is copied, the source length is not compared with the size of the destination buffer. Excess data overwrites adjacent memory.
The bug in code
The whole CWE-120 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
char buf[256];memcpy(buf, pkt->data, pkt->len);Fixed
char buf[256];if (pkt->len > sizeof(buf)) { return -EINVAL;}memcpy(buf, pkt->data, pkt->len);Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Overflow BuffersCAPEC-100likelihood: High · Very High
- Client-side Injection-induced Buffer OverflowCAPEC-14likelihood: Medium · High
- Filter Failure through Buffer OverflowCAPEC-24likelihood: High · High
- MIME ConversionCAPEC-42likelihood: High · High
- Overflow Binary Resource FileCAPEC-44likelihood: High · Very High
- Buffer Overflow via Symbolic LinksCAPEC-45likelihood: High · High
- Overflow Variables and TagsCAPEC-46likelihood: High · High
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.