5.5

CVE-2024-40993: netfilter: ipset: Fix suspicious rcu_dereference_protected()

Modified
AliasesUBUNTU-CVE-2024-40993DEBIAN-CVE-2024-40993
Published 12-07-2024Last modified 15-10-2026

Vulnerability summary

CVE-2024-40993 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 20% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.28%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3
DLA-4008-1DSA-5730-1DSA-5731-1

Timeline

  1. 12-07-2024
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: Fix suspicious rcu_dereference_protected() When destroying all sets, we are either in pernet exit phase or are executing a "destroy all sets command" from userspace. The latter was taken into account in ip_set_dereference() (nfnetlink mutex is held), but the former was not. The patch adds the required check to rcu_dereference_protected() in ip_set_dereference().

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.28%

Chance of exploitation in the next 30 days

Percentile

20%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.28% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu64 products
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
  • linux-aws-5.13All versions (No fix recorded)
  • linux-aws-5.19All versions (No fix recorded)
Linux2 products
  • linux≥ c0761d1f1ce1d5b85b5e82bbb714df12de1aa8c3, < 3799d02ae4208af08e81310770d8754863a246a1 | ≥ 93b53c202b51a69e42ca57f5a183f7e008e19f83, < 72d9611968867cc4c5509e7708b1507d692b797a | ≥ 0f1bb77c6d837c9513943bc7c08f04c5cc5c6568, < 523bed6489e089dd8040e72453fb79da47b144c2 | ≥ 390b353d1a1da3e9c6c0fd14fe650d69063c95d6, < 788d585e62f487bc4536d454937f737b70d39a33 | ≥ 2ba35b37f780c6410bb4bba9c3072596d8576702, < 94dd411c18d7fff9e411555d5c662d29416501e4 | ≥ 90ae20d47de602198eb69e6cd7a3db3420abfc08, < 3fc09e1ca854bc234e007a56e0f7431f5e2defb5 | ≥ 4e7aaa6b82d63e8ddcbfb56b4fd3d014ca586f10, < 8ecd06277a7664f4ef018abae3abd3451d64e7a6 | ≥ 6.1.95, < 6.1.96 | ≥ 6.6.35, < 6.6.36 | ≥ 6.9.6, < 6.9.7
  • linux_kernelEOL6.1.95 | 6.6.35 | 6.9.6 | 6.10:rc4
Debian1 product
  • linux< 6.1.99-1 | < 6.9.7-1

3 vendors · 67 products

References

13 links
Show all 13 references