Bug 2405728 (CVE-2023-53716) - CVE-2023-53716 kernel: Linux kernel: Network subsystem memory leak
Summary: CVE-2023-53716 kernel: Linux kernel: Network subsystem memory leak
Keywords:
Status: NEW
Alias: CVE-2023-53716
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-10-22 14:02 UTC by OSIDB Bzimport
Modified: 2025-11-12 18:52 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2025-10-22 14:02:40 UTC 
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.
Comment 1 Jon Moroney 2025-10-22 17:55:52 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025102214-CVE-2023-53716-4265@gregkh/T
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