CVE-2024-56654 (GCVE-0-2024-56654)

Vulnerability from cvelistv5 – Published: 2024-12-27 15:06 – Updated: 2025-10-01 20:07
VLAI?
Title
Bluetooth: hci_event: Fix using rcu_read_(un)lock while iterating
Summary
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();
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: a0bfde167b506423111ddb8cd71930497a40fc54 , < 0108132d7d76d884e443d18b4f067cdf2811911b (git)
Affected: a0bfde167b506423111ddb8cd71930497a40fc54 , < f9ecc90b5d501b3a5a62d0685d5104f934bb0104 (git)
Affected: a0bfde167b506423111ddb8cd71930497a40fc54 , < 581dd2dc168fe0ed2a7a5534a724f0d3751c93ae (git)
Affected: b475c1109251e30ec21fb574d72a1c71a4ab0039 (git)
Affected: 2ccde10127447c1a5caad8469fede945bdb62fdf (git)
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    Linux Linux Affected: 6.6
Unaffected: 0 , < 6.6 (semver)
Unaffected: 6.6.67 , ≤ 6.6.* (semver)
Unaffected: 6.12.6 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.