CVE-2024-26933
"Linux USB Core Deadlock Vulnerability"
Description
In the Linux kernel, the following vulnerability has been resolved: USB: core: Fix deadlock in port "disable" sysfs attribute The show and store callback routines for the "disable" sysfs attribute file in port.c acquire the device lock for the port's parent hub device. This can cause problems if another process has locked the hub to remove it or change its configuration: Removing the hub or changing its configuration requires the hub interface to be removed, which requires the port device to be removed, and device_del() waits until all outstanding sysfs attribute callbacks for the ports have returned. The lock can't be released until then. But the disable_show() or disable_store() routine can't return until after it has acquired the lock. The resulting deadlock can be avoided by calling sysfs_break_active_protection(). This will cause the sysfs core not to wait for the attribute's callback routine to return, allowing the removal to proceed. The disadvantage is that after making this call, there is no guarantee that the hub structure won't be deallocated at any moment. To prevent this, we have to acquire a reference to it first by calling hub_get().
INFO
Published Date :
May 1, 2024, 6:15 a.m.
Last Modified :
May 23, 2024, 7:12 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-26933
.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-26933
vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-26933
vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
May. 23, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://git.kernel.org/stable/c/4facc9421117ba9d8148c73771b213887fec77f7 No Types Assigned https://git.kernel.org/stable/c/4facc9421117ba9d8148c73771b213887fec77f7 Patch Changed Reference Type https://git.kernel.org/stable/c/73d1589b91f2099e5f6534a8497b7c6b527e064e No Types Assigned https://git.kernel.org/stable/c/73d1589b91f2099e5f6534a8497b7c6b527e064e Patch Changed Reference Type https://git.kernel.org/stable/c/9dac54f08198147f5ec0ec52fcf1bc8ac899ac05 No Types Assigned https://git.kernel.org/stable/c/9dac54f08198147f5ec0ec52fcf1bc8ac899ac05 Patch Changed Reference Type https://git.kernel.org/stable/c/f4d1960764d8a70318b02f15203a1be2b2554ca1 No Types Assigned https://git.kernel.org/stable/c/f4d1960764d8a70318b02f15203a1be2b2554ca1 Patch Changed Reference Type https://git.kernel.org/stable/c/f51849833705dea5b4f9b0c8de714dd87bd6c95c No Types Assigned https://git.kernel.org/stable/c/f51849833705dea5b4f9b0c8de714dd87bd6c95c Patch Added CWE NIST CWE-667 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 6.1.84 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2.0 up to (excluding) 6.6.24 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7.0 up to (excluding) 6.7.12 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.8.0 up to (excluding) 6.8.3 *cpe:2.3:o:linux:linux_kernel:6.9:r1:*:*:*:*:*:* -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 01, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: USB: core: Fix deadlock in port "disable" sysfs attribute The show and store callback routines for the "disable" sysfs attribute file in port.c acquire the device lock for the port's parent hub device. This can cause problems if another process has locked the hub to remove it or change its configuration: Removing the hub or changing its configuration requires the hub interface to be removed, which requires the port device to be removed, and device_del() waits until all outstanding sysfs attribute callbacks for the ports have returned. The lock can't be released until then. But the disable_show() or disable_store() routine can't return until after it has acquired the lock. The resulting deadlock can be avoided by calling sysfs_break_active_protection(). This will cause the sysfs core not to wait for the attribute's callback routine to return, allowing the removal to proceed. The disadvantage is that after making this call, there is no guarantee that the hub structure won't be deallocated at any moment. To prevent this, we have to acquire a reference to it first by calling hub_get(). Added Reference kernel.org https://git.kernel.org/stable/c/9dac54f08198147f5ec0ec52fcf1bc8ac899ac05 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/f51849833705dea5b4f9b0c8de714dd87bd6c95c [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/4facc9421117ba9d8148c73771b213887fec77f7 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/73d1589b91f2099e5f6534a8497b7c6b527e064e [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/f4d1960764d8a70318b02f15203a1be2b2554ca1 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-26933
is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-26933
weaknesses.