CVE-2024-20147: In Bluetooth FW, there is a possible reachable assertion due to improper exception handling

Q: How do I fix CVE-2024-20147?

yocto: downgrade or apply the listed mitigation; software development kit: upgrade to newer than 3.5; android: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2024-20147 being exploited?

CVE-2024-20147 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-20147 affect?

CVE-2024-20147 affects yocto, software development kit, android. Severity is medium (CVSS 5.3). In Bluetooth FW, there is a possible reachable assertion due to improper exception handling. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch

Q: How urgent is CVE-2024-20147?

Priority 32/100. Remotely exploitable, no login, no user action; On your watchlist

Routine

MEDIUM 5.3REMOTEWATCHLISTDOWNGRADEUPGRADEMITIGATE

CVE-2024-20147 is a medium-severity flaw (CVSS 5.3) affecting yocto, software development kit, android. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Bluetooth FW, there is a possible reachable assertion due to improper exception handling. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00389046 (Note: For MT79XX chipsets) / ALPS09136501 (Note: For MT2737, MT3603, MT6XXX, and MT8XXX chipsets); Issue ID: MSV-1797.

Why this priority

Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 88%)
CISA exploited list	No
Weakness	CWE-617
Published	2025-02-03
Last modified	2026-06-17

Publisher (CNA): MediaTek, Inc. · Vendor: google · linuxfoundation · mediatek · openwrt

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-02-03 04:15 UTCPublished CVE record published
2026-06-17 07:06 UTCUpdated Record last modified

linuxfoundation yocto DOWNGRADE

Affected: 3.3 · 4.0 · 5.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.3

1. Check installed version

apt-cache policy yocto || rpm -q yocto || yocto --version

2. No fixed release: DOWNGRADE to a release before 3.3 (Debian / Ubuntu)

apt-cache madison yocto sudo apt install yocto=<VERSION_BEFORE_3.3> sudo apt-mark hold yocto

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list yocto sudo dnf downgrade yocto-<VERSION_BEFORE_3.3> sudo dnf versionlock add yocto

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

mediatek software development kit UPGRADE

Affected: <= 3.5

Fixed in: newer than 3.5

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy software-development-kit || rpm -q software-development-kit || software-development-kit --version

2. UPGRADE to newer than 3.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade software-development-kit

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade software-development-kit

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

google android MITIGATE

Affected: 13.0 · 14.0 · 15.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 13.0

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.

openwrt openwrt MITIGATE

Affected: 23.05

Fixed in: no fixed release known

Safe to downgrade to: a release before 23.05

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.

Quick answers

How do I fix CVE-2024-20147?

yocto: downgrade or apply the listed mitigation; software development kit: upgrade to newer than 3.5; android: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-20147 being exploited?

CVE-2024-20147 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-2024-20147 affect?

CVE-2024-20147 affects yocto, software development kit, android. Severity is medium (CVSS 5.3). In Bluetooth FW, there is a possible reachable assertion due to improper exception handling. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch

How urgent is CVE-2024-20147?

Priority 32/100. Remotely exploitable, no login, no user action; On your watchlist

Software pages

Android vulnerabilities · Bluetooth vulnerabilities · OpenWrt vulnerabilities

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References

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