CVE-2024-56654

MEDIUM EPSS 11.5%
Published Dec 27, 20241y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Dec 27, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: Fix using rcu_read_(un)lock while iterating The usage of rcu_read_(un)lock while inside list_for_each_entry_rcu is not safe since for the most part entries fetched this way shall be treated as rcu_dereference: Note that the value returned by rcu_dereference() is valid only within the enclosing RCU read-side critical section [1]_. For example, the following is **not** legal:: rcu_read_lock(); p = rcu_dereference(head.next); rcu_read_unlock(); x = p->address; /* BUG!!! */ rcu_read_lock(); y = p->data; /* BUG!!! */ rcu_read_unlock();

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
11.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 5

VendorProductVersionRange
linuxlinux_kernel*≥6.4.16  –  <6.5
linuxlinux_kernel*≥6.5.3  –  <6.6.67
linuxlinux_kernel*≥6.7  –  <6.12.6
linuxlinux_kernel6.13any
linuxlinux_kernel6.13any

References 3

  • git.kernel.org https://git.kernel.org/stable/c/0108132d7d76d884e443d18b4f067cdf2811911b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/581dd2dc168fe0ed2a7a5534a724f0d3751c93ae
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f9ecc90b5d501b3a5a62d0685d5104f934bb0104
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0108132d7d76d884e443d18b4f067cdf2811911b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/581dd2dc168fe0ed2a7a5534a724f0d3751c93ae
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f9ecc90b5d501b3a5a62d0685d5104f934bb0104
    Patch