Service interruption via cloned socket-buffer leak
Published Oct 22, 2025 · Updated Oct 22, 2025
Resource leak in Linux allows local users to exhaust kernel memory by triggering a failed zerocopy socket-buffer orphaning operation. __skb_tstamp_tx() returns without freeing its newly cloned skb when skb_orphan_frags_rx() fails, retaining kernel memory after each failed call. Reachability requires local low-privilege execution and the affected TX timestamping path; repeated triggers can interrupt service through memory exhaustion.
Summary
What happened
Resource leak in Linux allows local users to exhaust kernel memory by triggering a failed zerocopy socket-buffer orphaning operation. __skb_tstamp_tx() returns without freeing its newly cloned skb when skb_orphan_frags_rx() fails, retaining kernel memory after each failed call. Reachability requires local low-privilege execution and the affected TX timestamping path; repeated triggers can interrupt service through memory exhaustion.
The record
- CVE
- CVE-2023-53716
- Published
- Oct 22, 2025
- Updated
- Oct 22, 2025
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- T1499.004
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 22, 2025CVE publishedPublication date reported by the CVE source.
- Oct 22, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1f69c086b20e27763af28145981435423f088268 <779332447108545ef04682ea29af5f85c0202aee
- Affected versionversion=230a5ed7d813fb516de81d23f09d7506753e41e9 <a594382ec6d0cc8cff5a8bc7e61b54e3858fb243
- Affected versionversion=281072fb2a7294cde7acbf5375b879f40a8001b7 <82501f1ead557cbee1c2467654ec109a80334d22
- Affected versionversion=30290f210ba7426ff7592fe2eb4114b1b5bad219
- Affected versionversion=4.14.315 <4.14.316
- Affected versionversion=4.19.283 <4.19.284
- Affected versionversion=426384dd4980040651536fef5feac4dcc4d7ee4e <f4d928c00254cfc9dd0ee7076f4a59bceec675f4
- Affected versionversion=43e4197dd5f6b474a8b16f8b6a42cd45cf4f9d1a <e06841a2abf9c82735cee39e88b1d79464088840
- Affected versionversion=50749f2dd6854a41830996ad302aef2ffaf011d8 <8a02fb71d7192ff1a9a47c9d937624966c6e09af
- Affected versionversion=5.10.180 <5.10.181
- Affected versionversion=5.15.111 <5.15.114
- Affected versionversion=5.4.243 <5.4.244
- Affected versionversion=602fa8af44fd55a58f9e94eb673e8adad2c6cc46 <58766252f6b2c0487cda6976a53d2bb03ae28e2a
- Affected versionversion=6.1.28 <6.1.31
- Affected versionversion=6.3.2 <6.3.5
- Affected versionversion=cb52e7f24c1d01a536a847dff0d1d95889cc3b5c <cc18b4685910d5d9de8314bae9c55790701b1811
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo