CVE-2024-26910
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…
Does this matter?
Lower severity and a low EPSS score (0.18%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 4.7 MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.18% probability · 7th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-362
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/653bc5e6d9995d7d5f497c665b321875a626161cPatch
- https://git.kernel.org/stable/c/970709a67696b100a57b33af1a3d75fc34b747ebPatch
- https://git.kernel.org/stable/c/97f7cf1cd80eeed3b7c808b7c12463295c751001Patch
- https://git.kernel.org/stable/c/a24d5f2ac8ef702a58e55ec276aad29b4bd97e05Patch
- https://git.kernel.org/stable/c/b93a6756a01f4fd2f329a39216f9824c56a66397Patch
- https://git.kernel.org/stable/c/c2dc077d8f722a1c73a24e674f925602ee5ece49Patch
- https://git.kernel.org/stable/c/c7f2733e5011bfd136f1ca93497394d43aa76225Patch
- https://git.kernel.org/stable/c/653bc5e6d9995d7d5f497c665b321875a626161cPatch
- https://git.kernel.org/stable/c/970709a67696b100a57b33af1a3d75fc34b747ebPatch
- https://git.kernel.org/stable/c/97f7cf1cd80eeed3b7c808b7c12463295c751001Patch
- https://git.kernel.org/stable/c/a24d5f2ac8ef702a58e55ec276aad29b4bd97e05Patch
- https://git.kernel.org/stable/c/b93a6756a01f4fd2f329a39216f9824c56a66397Patch
- https://git.kernel.org/stable/c/c2dc077d8f722a1c73a24e674f925602ee5ece49Patch
- https://git.kernel.org/stable/c/c7f2733e5011bfd136f1ca93497394d43aa76225Patch
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.