PatchTheCVECVE-2021-30299: Possible out of bound access in audio module due to lack of validation of user provided input.
24
Routine
MEDIUM 6.7MITIGATEMITIGATEMITIGATE
CVE-2021-30299 is a medium-severity flaw (CVSS 6.7) affecting wsa8835 firmware, wsa8830 firmware, wsa8815 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Possible out of bound access in audio module due to lack of validation of user provided input.
Why this priority
- No elevated risk signals yet
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 6.7 (Medium) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | High |
| User interaction | None |
| EPSS exploit chance | 0.1% (top 98%) |
| CISA exploited list | No |
| Weakness | CWE-20 |
| Published | 2024-11-22 |
| Last modified | 2026-06-17 |
Publisher (CNA): Qualcomm, Inc. · Vendor: qualcomm
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
qualcomm wsa8835 firmware MITIGATE
Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
qualcomm wsa8830 firmware MITIGATE
Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
qualcomm wsa8815 firmware MITIGATE
Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
qualcomm wsa8810 firmware MITIGATE
Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
qualcomm wcn6856 firmware MITIGATE
Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
qualcomm wcn6855 firmware MITIGATE
Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-30299?
wsa8835 firmware: mitigate or apply the listed mitigation; wsa8830 firmware: mitigate or apply the listed mitigation; wsa8815 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2021-30299 being exploited?
CVE-2021-30299 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-30299 affect?
CVE-2021-30299 affects wsa8835 firmware, wsa8830 firmware, wsa8815 firmware. Severity is medium (CVSS 6.7). Possible out of bound access in audio module due to lack of validation of user provided input.
How urgent is CVE-2021-30299?
Priority 24/100. No elevated risk signals yet.
Software pages
Related CVEs
- CVE-2026-21375 HIGH 7.8 MITIGATE MITIGATE Memory Corruption when accessing an output buffer without validating its size during IOCTL processing.
- CVE-2026-25268 HIGH 8.8 MITIGATE MITIGATE Memory Corruption when processing invalid HT40 channel layouts during dynamic channel switching operations.
- CVE-2025-21473 HIGH 7.8 MITIGATE MITIGATE Memory corruption when using Virtual cdm (Camera Data Mover) to write registers.
- CVE-2024-43058 HIGH 7.8 MITIGATE MITIGATE Memory corruption while processing IOCTL calls.
- CVE-2024-38425 MEDIUM 6.1 MITIGATE MITIGATE Information disclosure while sending implicit broadcast containing APP launch information.