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CVE-2024-35856

Bluetooth: btusb: mediatek: Fix double free of skb in coredump

HIGH
7.8
CVSS Score
Published: May 17, 2024 at 02:47 PM UTC
Updated: August 5, 2026 at 12:04 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: mediatek: Fix double free of skb in coredump hci_devcd_append() would free the skb on error so the caller don't have to free it again otherwise it would cause the double free of skb. Reported-by : Dan Carpenter <[email protected]>

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
6.6 ≤ v < 6.6.306.6 ≤ v < 6.8.96.6 ≤ v < 6.96.7 ≤ v < 6.8.90b70151328781a89c89e4cf3fae21fc0e98d869e6.9 rc16.9 rc26.9 rc36.9 rc46.9 rc5
Vendor states this is fixed in 18bdb386a1a30e7a3d7732a98e45e69cf6b5710d (fixed)
Vendor states this is fixed in 80dfef128cb9f1b1ef67c0fe8c8deb4ea7ad30c1 (fixed)
Vendor states this is fixed in e20093c741d8da9f6390dd45d75b779861547035 (fixed)
Vendor states this is fixed in 6.6 (unaffected)
Vendor states this is fixed in 6.6.30 (unaffected)
Vendor states this is fixed in 6.8.9 (unaffected)
Vendor states this is fixed in 6.9 (unaffected)

References (3)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/18bdb386a1a30e7a3d7732a98e45e69cf6b5710d
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/80dfef128cb9f1b1ef67c0fe8c8deb4ea7ad30c1
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/e20093c741d8da9f6390dd45d75b779861547035

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGH[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-415

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