Service interruption via synchronous ipset swap waits
Published Apr 17, 2024 · Updated May 23, 2026
Performance regression in the Linux kernel's ipset subsystem allows local users to interrupt service through repeated set swaps. The ipset swap path performs synchronize_rcu synchronously, waiting for a grace period on every swap instead of deferring destruction through call_rcu. Exploitation requires local low-privileged access and favorable timing; the bounded consequence is degraded availability without data exposure or modification.
Summary
What happened
Performance regression in the Linux kernel's ipset subsystem allows local users to interrupt service through repeated set swaps. The ipset swap path performs synchronize_rcu synchronously, waiting for a grace period on every swap instead of deferring destruction through call_rcu. Exploitation requires local low-privileged access and favorable timing; the bounded consequence is degraded availability without data exposure or modification.
The record
- CVE
- CVE-2024-26910
- Published
- Apr 17, 2024
- Updated
- May 23, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- CWE-362, T1499
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 17, 2024CVE publishedPublication date reported by the CVE source.
- May 23, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=23c31036f862582f98386120aee55c9ae23d7899 <b93a6756a01f4fd2f329a39216f9824c56a66397
- Affected versionversion=28628fa952fefc7f2072ce6e8016968cc452b1ba <970709a67696b100a57b33af1a3d75fc34b747eb
- Affected versionversion=28628fa952fefc7f2072ce6e8016968cc452b1ba <97f7cf1cd80eeed3b7c808b7c12463295c751001
- Affected versionversion=4.19.302 <4.20
- Affected versionversion=427deb5ba5661c4ae1cfb35955d2e01bd5f3090a <c7f2733e5011bfd136f1ca93497394d43aa76225
- Affected versionversion=5.10.204 <5.10.210
- Affected versionversion=5.15.143 <5.15.149
- Affected versionversion=5.4.264 <5.4.269
- Affected versionversion=6.1.68 <6.1.79
- Affected versionversion=6.6.7 <6.6.18
- Affected versionversion=6.7
- Affected versionversion=875ee3a09e27b7adb7006ca6d16faf7f33415aa5 <653bc5e6d9995d7d5f497c665b321875a626161c
- Affected versionversion=8bb930c3a1eacec1b14817f565ff81667c7c5dfa <c2dc077d8f722a1c73a24e674f925602ee5ece49
- Affected versionversion=a12606e5ad0cee8f4ba3ec68561c4d6275d2df57
- Affected versionversion=e7152a138a5ac77439ff4e7a7533448a7d4c260d <a24d5f2ac8ef702a58e55ec276aad29b4bd97e05
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
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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