CVE-2023-53549
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-04

Last updated on: 2026-03-23

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: Rework long task execution when adding/deleting entries When adding/deleting large number of elements in one step in ipset, it can take a reasonable amount of time and can result in soft lockup errors. The patch 5f7b51bf09ba ("netfilter: ipset: Limit the maximal range of consecutive elements to add/delete") tried to fix it by limiting the max elements to process at all. However it was not enough, it is still possible that we get hung tasks. Lowering the limit is not reasonable, so the approach in this patch is as follows: rely on the method used at resizing sets and save the state when we reach a smaller internal batch limit, unlock/lock and proceed from the saved state. Thus we can avoid long continuous tasks and at the same time removed the limit to add/delete large number of elements in one step. The nfnl mutex is held during the whole operation which prevents one to issue other ipset commands in parallel.
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Meta Information
Published
2025-10-04
Last Modified
2026-03-23
Generated
2026-05-07
AI Q&A
2025-10-04
EPSS Evaluated
2026-05-05
NVD
CVE-2023-53549
EUVD
EUVD-2025-32304
Affected Vendors & Products
Showing 10 associated CPEs
Vendor Product Version / Range
linux linux_kernel 5.14
linux linux_kernel 5.14
linux linux_kernel 6.2
linux linux_kernel 6.2
linux linux_kernel From 6.1 (inc) to 6.1.5 (exc)
linux linux_kernel From 5.16 (inc) to 6.0.19 (exc)
linux linux_kernel From 5.13.14 (inc) to 5.14 (exc)
linux linux_kernel 5.14
linux linux_kernel From 5.10.157 (inc) to 5.10.163 (exc)
linux linux_kernel From 5.14.1 (inc) to 5.15.87 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-667 The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability occurs in the Linux kernel's netfilter ipset component when adding or deleting a large number of elements in one step. The operation can take a long time and cause soft lockup errors, meaning the system can become unresponsive temporarily. Previous attempts to fix this by limiting the number of elements processed at once were insufficient. The updated approach breaks the task into smaller batches, saving state between batches and unlocking/relocking as needed to avoid long continuous tasks and prevent system hangs.


How can this vulnerability impact me? :

The vulnerability can cause soft lockup errors during large ipset add/delete operations, which may lead to temporary system unresponsiveness or hung tasks. This can affect system stability and availability when managing large sets of network filtering rules.


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