7

CVE-2024-27397

netfilter: nf_tables: use timestamp to check for set element timeout

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

netfilter: nf_tables: use timestamp to check for set element timeout

Add a timestamp field at the beginning of the transaction, store it
in the nftables per-netns area.

Update set backend .insert, .deactivate and sync gc path to use the
timestamp, this avoids that an element expires while control plane
transaction is still unfinished.

.lookup and .update, which are used from packet path, still use the
current time to check if the element has expired. And .get path and dump
also since this runs lockless under rcu read size lock. Then, there is
async gc which also needs to check the current time since it runs
asynchronously from a workqueue.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 4.1 < 4.19.320
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.282
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.224
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.165
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.97
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.84
Linux ≫ Linux Kernel Version >= 6.7 < 6.7.5
Linux ≫ Linux Kernel Version6.8 Updaterc1
Linux ≫ Linux Kernel Version6.8 Updaterc2
Linux ≫ Linux Kernel Version6.8 Updaterc3
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.26% 0.168
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7 1 5.9
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://git.kernel.org/stable/c/0d40e8cb1d1f56a994cdd2e015af622fdca9ed4d
Patch
https://git.kernel.org/stable/c/383182db8d58c4237772ba0764cded4938a235c3
Patch
https://git.kernel.org/stable/c/7395dfacfff65e9938ac0889dafa1ab01e987d15
Patch
https://git.kernel.org/stable/c/7b17de2a71e56c10335b565cc7ad238e6d984379
Patch
https://git.kernel.org/stable/c/b45176b869673417ace338b87cf9cdb66e2eeb01
Patch
https://git.kernel.org/stable/c/eaf1a29ea5d7dba8e84e9e9f3b3f47d0cd540bfe
Patch
https://git.kernel.org/stable/c/f8dfda798650241c1692058713ca4fef8e429061
Patch
https://git.kernel.org/stable/c/7fa2e2960fff8322ce2ded57b5f8e9cbc450b967
Patch
https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
https://cert-portal.siemens.com/productcert/html/ssa-265688.html