CVE-2024-38602
Linux Kernel AX25 Device Reference Count Memory Leak
Description
In the Linux kernel, the following vulnerability has been resolved: ax25: Fix reference count leak issues of ax25_dev The ax25_addr_ax25dev() and ax25_dev_device_down() exist a reference count leak issue of the object "ax25_dev". Memory leak issue in ax25_addr_ax25dev(): The reference count of the object "ax25_dev" can be increased multiple times in ax25_addr_ax25dev(). This will cause a memory leak. Memory leak issues in ax25_dev_device_down(): The reference count of ax25_dev is set to 1 in ax25_dev_device_up() and then increase the reference count when ax25_dev is added to ax25_dev_list. As a result, the reference count of ax25_dev is 2. But when the device is shutting down. The ax25_dev_device_down() drops the reference count once or twice depending on if we goto unlock_put or not, which will cause memory leak. As for the issue of ax25_addr_ax25dev(), it is impossible for one pointer to be on a list twice. So add a break in ax25_addr_ax25dev(). As for the issue of ax25_dev_device_down(), increase the reference count of ax25_dev once in ax25_dev_device_up() and decrease the reference count of ax25_dev after it is removed from the ax25_dev_list.
INFO
Published Date :
June 19, 2024, 2:15 p.m.
Last Modified :
Nov. 21, 2024, 9:26 a.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
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CVE-2024-38602.
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The following list is the news that have been mention
CVE-2024-38602 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-38602 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.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/1ea02699c7557eeb35ccff2bd822de1b3e09d868 Added Reference https://git.kernel.org/stable/c/38eb01edfdaa1562fa00429be2e33f45383b1b3a Added Reference https://git.kernel.org/stable/c/81d8240b0a243b3ddd8fa8aa172f1acc2f7cc8f3 Added Reference https://git.kernel.org/stable/c/ae467750a3765dd1092eb29f58247950a2f9b60c Added Reference https://git.kernel.org/stable/c/b505e0319852b08a3a716b64620168eab21f4ced -
Initial Analysis by [email protected]
Aug. 27, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://git.kernel.org/stable/c/1ea02699c7557eeb35ccff2bd822de1b3e09d868 No Types Assigned https://git.kernel.org/stable/c/1ea02699c7557eeb35ccff2bd822de1b3e09d868 Patch Changed Reference Type https://git.kernel.org/stable/c/38eb01edfdaa1562fa00429be2e33f45383b1b3a No Types Assigned https://git.kernel.org/stable/c/38eb01edfdaa1562fa00429be2e33f45383b1b3a Patch Changed Reference Type https://git.kernel.org/stable/c/81d8240b0a243b3ddd8fa8aa172f1acc2f7cc8f3 No Types Assigned https://git.kernel.org/stable/c/81d8240b0a243b3ddd8fa8aa172f1acc2f7cc8f3 Patch Changed Reference Type https://git.kernel.org/stable/c/ae467750a3765dd1092eb29f58247950a2f9b60c No Types Assigned https://git.kernel.org/stable/c/ae467750a3765dd1092eb29f58247950a2f9b60c Patch Changed Reference Type https://git.kernel.org/stable/c/b505e0319852b08a3a716b64620168eab21f4ced No Types Assigned https://git.kernel.org/stable/c/b505e0319852b08a3a716b64620168eab21f4ced Patch Added CWE NIST NVD-CWE-Other Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.17 up to (excluding) 6.1.93 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.33 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.8.12 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.9 up to (excluding) 6.9.3 -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 19, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: ax25: Fix reference count leak issues of ax25_dev The ax25_addr_ax25dev() and ax25_dev_device_down() exist a reference count leak issue of the object "ax25_dev". Memory leak issue in ax25_addr_ax25dev(): The reference count of the object "ax25_dev" can be increased multiple times in ax25_addr_ax25dev(). This will cause a memory leak. Memory leak issues in ax25_dev_device_down(): The reference count of ax25_dev is set to 1 in ax25_dev_device_up() and then increase the reference count when ax25_dev is added to ax25_dev_list. As a result, the reference count of ax25_dev is 2. But when the device is shutting down. The ax25_dev_device_down() drops the reference count once or twice depending on if we goto unlock_put or not, which will cause memory leak. As for the issue of ax25_addr_ax25dev(), it is impossible for one pointer to be on a list twice. So add a break in ax25_addr_ax25dev(). As for the issue of ax25_dev_device_down(), increase the reference count of ax25_dev once in ax25_dev_device_up() and decrease the reference count of ax25_dev after it is removed from the ax25_dev_list. Added Reference kernel.org https://git.kernel.org/stable/c/ae467750a3765dd1092eb29f58247950a2f9b60c [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/38eb01edfdaa1562fa00429be2e33f45383b1b3a [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/81d8240b0a243b3ddd8fa8aa172f1acc2f7cc8f3 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/1ea02699c7557eeb35ccff2bd822de1b3e09d868 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/b505e0319852b08a3a716b64620168eab21f4ced [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-2024-38602 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-2024-38602
weaknesses.