CVE-2023-53716
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-22

Last updated on: 2025-10-22

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: net: fix skb leak in __skb_tstamp_tx() Commit 50749f2dd685 ("tcp/udp: Fix memleaks of sk and zerocopy skbs with TX timestamp.") added a call to skb_orphan_frags_rx() to fix leaks with zerocopy skbs. But it ended up adding a leak of its own. When skb_orphan_frags_rx() fails, the function just returns, leaking the skb it just cloned. Free it before returning. This bug was discovered and resolved using Coverity Static Analysis Security Testing (SAST) by Synopsys, Inc.
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Meta Information
Published
2025-10-22
Last Modified
2025-10-22
Generated
2026-06-16
AI Q&A
2025-10-22
EPSS Evaluated
2026-06-15
NVD
CVE-2023-53716
EUVD
EUVD-2023-60012
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is a memory leak in the Linux kernel related to network packet handling. Specifically, a fix intended to prevent memory leaks in TCP/UDP zero-copy socket buffers (skbs) with transmit timestamps introduced a new leak. When a function called skb_orphan_frags_rx() fails, it returns without freeing a cloned skb, causing a memory leak. The issue was discovered and fixed using static analysis tools.

Impact Analysis

This vulnerability can lead to memory leaks in the Linux kernel's network stack, which may cause increased memory usage and potentially degrade system performance or stability over time if exploited or triggered frequently.

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