9.1

CVE-2026-72320: linux

CVSS: 9.1v3.1CriticalReceived
AliasesUBUNTU-CVE-2026-72320DEBIAN-CVE-2026-72320
Published 15-08-2026Last modified 16-10-2026
Open JSON

Vulnerability summary

CVE-2026-72320 is a critical (CVSS 9.1) vulnerability in linux. EPSS estimates a 0.52% chance of exploitation in the next 30 days, higher than 43.1% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.52%
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 10 · Related 9
RHSA-2026:83156USN-8781-1USN-8816-1USN-8816-2USN-8816-3USN-8816-4

Timeline

  1. 15-08-2026
    PublishedVulnerability first disclosed.
  2. 16-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_lookup: fix catchall element handling with inverted lookups nft_lookup_eval() decides whether a lookup matched (`found`) from the direct set lookup and priv->invert before falling back to the catchall element used by interval sets (e.g. nft_set_rbtree) for the open-ended default range. Since `found` is never recomputed after `ext` is replaced by the catchall lookup, inverted lookups (NFT_LOOKUP_F_INV, "!= @set") can wrongly match or wrongly skip the catchall element, producing the wrong verdict. Fold the catchall lookup into `ext` before computing `found`, matching the order already used by nft_objref_map_eval().

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.52%

Chance of exploitation in the next 30 days

Percentile

43%

Versus all other CVEs

30-day change

0.00 pp

From 0.52% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.52%

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

No weakness data has been published for this record.

Affected systems

Ubuntu157 products
  • linuxAll versions (No fix recorded) | < 6.8.0-147.147 | < 7.0.0-34.34
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 6.8.0-1067.70 | < 7.0.0-1013.13
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linuxAll versions (No fix recorded) | < 6.12.100-1 | < 7.1.5-1
Linux1 product
  • linux≥ aaa31047a6d25da0fa101da1ed544e1247949b40, < 0ab8880865f9678eb6174e72c1fc4712e44c745c | ≥ aaa31047a6d25da0fa101da1ed544e1247949b40, < 238c612357b5a25f03eacf356f95034f8551f218 | ≥ aaa31047a6d25da0fa101da1ed544e1247949b40, < ef0c7d4b04a0e6ad175323c24bc84e11470dd79d | ≥ aaa31047a6d25da0fa101da1ed544e1247949b40, < e6107a4c74b54cb33e3bce162a63048ae5a6b198 | 5.13

3 vendors · 159 products

References

17 links
Show all 17 references