4.7

CVE-2024-26910

netfilter: ipset: fix performance regression in swap operation

In the Linux kernel, the following vulnerability has been resolved:

netfilter: ipset: fix performance regression in swap operation

The patch "netfilter: ipset: fix race condition between swap/destroy
and kernel side add/del/test", commit 28628fa9 fixes a race condition.
But the synchronize_rcu() added to the swap function unnecessarily slows
it down: it can safely be moved to destroy and use call_rcu() instead.

Eric Dumazet pointed out that simply calling the destroy functions as
rcu callback does not work: sets with timeout use garbage collectors
which need cancelling at destroy which can wait. Therefore the destroy
functions are split into two: cancelling garbage collectors safely at
executing the command received by netlink and moving the remaining
part only into the rcu callback.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version < 5.4.269
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.210
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.149
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.79
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.18
Linux ≫ Linux Kernel Version >= 6.7 < 6.7.6
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.18% 0.071
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 4.7 1 3.6
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
https://git.kernel.org/stable/c/653bc5e6d9995d7d5f497c665b321875a626161c
Patch
https://git.kernel.org/stable/c/970709a67696b100a57b33af1a3d75fc34b747eb
Patch
https://git.kernel.org/stable/c/97f7cf1cd80eeed3b7c808b7c12463295c751001
Patch
https://git.kernel.org/stable/c/a24d5f2ac8ef702a58e55ec276aad29b4bd97e05
Patch
https://git.kernel.org/stable/c/b93a6756a01f4fd2f329a39216f9824c56a66397
Patch
https://git.kernel.org/stable/c/c2dc077d8f722a1c73a24e674f925602ee5ece49
Patch
https://git.kernel.org/stable/c/c7f2733e5011bfd136f1ca93497394d43aa76225
Patch