UnratedFix available
ax25: Fix reference count leak issues of ax25_dev
Type: advisorySources: OSV
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 6.1.93, 6.6.33, 6.8.12, 6.9.3
- CVEs
- CVE-2024-38602
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 01:00 UTC · Revision 1
Source evidence
ax25: Fix reference count leak issues of ax25_dev
core-osv · Original sourcePublished 19 Jun 2024, 13:48 UTC
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.
osv:CVE-2024-38602
Kernel
Fixed versions: 6.1.93, 6.6.33, 6.8.12, 6.9.3
Complete source record
{
"id": "2aa80516e5c103f080330d351b69ba7a318201cef596418e4bf217001c250b05",
"url": "https://osv.dev/vulnerability/CVE-2024-38602",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ax25: Fix reference count leak issues of ax25_dev",
"summary": "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.",
"evidence": "osv:CVE-2024-38602",
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"modified": "2026-10-28T02:30:32.297754500Z",
"provider": "osv",
"references": [
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"source_id": "core-osv",
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"published_at": "2024-06-19T13:48:13.768+00:00"
}