7.8

CVE-2024-27020: linux Race Condition

CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2024-27020DEBIAN-CVE-2024-27020
Published 01-05-2024Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2024-27020 is a high (CVSS 7.8) Race Condition vulnerability in linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 11.8% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.22%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 45 · Related 32
DLA-3840-1DLA-3842-1DSA-5680-1DSA-5681-1MGASA-2024-0263MGASA-2024-0266

Timeline

  1. 01-05-2024
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: Fix potential data-race in __nft_expr_type_get() nft_unregister_expr() can concurrent with __nft_expr_type_get(), and there is not any protection when iterate over nf_tables_expressions list in __nft_expr_type_get(). Therefore, there is potential data-race of nf_tables_expressions list entry. Use list_for_each_entry_rcu() to iterate over nf_tables_expressions list in __nft_expr_type_get(), and use rcu_read_lock() in the caller nft_expr_type_get() to protect the entire type query process.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

12%

Versus all other CVEs

30-day change

0.00 pp

From 0.22% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.22%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu122 products
  • linuxAll versions (No fix recorded) | < 4.4.0-257.291 | < 4.15.0-227.239 | < 5.4.0-189.209 | < 5.15.0-116.126 | < 6.8.0-38.38
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.4.0-1134.140 | < 4.4.0-1172.187 | < 4.15.0-1170.183 | < 5.4.0-1128.138 | < 5.15.0-1065.71 | < 6.8.0-1011.12
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ ef1f7df9170dbd875ce198ba84e6ab80f6fc139e, < 939109c0a8e2a006a6cc8209e262d25065f4403a | ≥ ef1f7df9170dbd875ce198ba84e6ab80f6fc139e, < b38a133d37fa421c8447b383d788c9cc6f5cb34c | ≥ ef1f7df9170dbd875ce198ba84e6ab80f6fc139e, < 934e66e231cff2b18faa2c8aad0b8cec13957e05 | ≥ ef1f7df9170dbd875ce198ba84e6ab80f6fc139e, < 0b6de00206adbbfc6373b3ae38d2a6f197987907 | ≥ ef1f7df9170dbd875ce198ba84e6ab80f6fc139e, < 8d56bad42ac4c43c6c72ddd6a654a2628bf839c5 | ≥ ef1f7df9170dbd875ce198ba84e6ab80f6fc139e, < a9ebf340d123ae12582210407f879d6a5a1bc25b | ≥ ef1f7df9170dbd875ce198ba84e6ab80f6fc139e, < 01f1a678b05ade4b1248019c2dcca773aebbeb7f | ≥ ef1f7df9170dbd875ce198ba84e6ab80f6fc139e, < f969eb84ce482331a991079ab7a5c4dc3b7f89bf | 3.13
  • linux_kernel≥ 3.13, < 4.19.313 | ≥ 4.20, < 5.4.275 | ≥ 5.5, < 5.10.216 | ≥ 5.11, < 5.15.157 | ≥ 5.16, < 6.1.88 | ≥ 6.2, < 6.6.29 | ≥ 6.7, < 6.8.8 | 6.9:rc1 | 6.9:rc2 | 6.9:rc3 | 6.9:rc4
Debian1 product
  • linux< 6.1.90-1 | < 6.8.9-1

3 vendors · 125 products

References

42 links
Show all 42 references