CVE-2023-53303
- Published: 2025-09-16T08:15:39.737
In the Linux kernel, the following vulnerability has been resolved:
net: microchip: vcap api: Fix possible memory leak for vcap_dup_rule()
Inject fault When select CONFIG_VCAP_KUNIT_TEST, the below memory leak
occurs. If kzalloc() for duprule succeeds, but the following
kmemdup() fails, the duprule, ckf and caf memory will be leaked. So kfree
them in the error path.
unreferenced object 0xffff122744c50600 (size 192):
comm “kunit_try_catch”, pid 346, jiffies 4294896122 (age 911.812s)
hex dump (first 32 bytes):
10 27 00 00 04 00 00 00 1e 00 00 00 2c 01 00 00 .’……….,…
00 00 00 00 00 00 00 00 18 06 c5 44 27 12 ff ff ………..D’…
backtrace:
[] __kmem_cache_alloc_node+0x274/0x2f8
[] kmalloc_trace+0x38/0x88
[] vcap_dup_rule+0x50/0x460
[] vcap_add_rule+0x8cc/0x1038
[] test_vcap_xn_rule_creator.constprop.0.isra.0+0x238/0x494
[] vcap_api_rule_remove_in_front_test+0x1ac/0x698
[] kunit_try_run_case+0xe0/0x20c
[] kunit_generic_run_threadfn_adapter+0x50/0x94
[] kthread+0x2e8/0x374
[] ret_from_fork+0x10/0x20
Related CVE by CWE
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How to fix CVE-2023-53303
Description: In the Linux kernel, the following vulnerability has been resolved: net: microchip: vcap api: Fix possible memory leak for vcap_dup_rule() Inject fault When select CONFIG_VCAP_KUNIT_TEST, the below memory leak occurs. If kzalloc() for duprule succeeds, but the following kmemdup() fails, the duprule, ckf and caf memory will be leaked. So kfree them in the error […]
Exploit Difficulty: HARD
⏱️ Time to exploit: > 4 hours
🛠️ Required skills: Advanced security expertise
💰 Public exploits: Rare or not public
How to Fix:
- Check if you're running the affected product
- Update to the latest patched version
- If patching is not immediately possible: restrict network exposure, apply least-privilege access
- Test the fix in a staging environment first
- Review logs for signs of exploitation
- Monitor for IOCs (Indicators of Compromise)
- Enable automatic security updates
- Set up vulnerability monitoring
- Review and harden security configurations
Exploit Difficulty Assessment
Vulnerability Timeline
CVE details first published to NVD database
Added to this CVE tracking system
Detection Rules & IOCs
No specific detection rules generated for this vulnerability type.
No vendor/product data available.