9.8

CVE-2026-72451: linux

CVSS: 9.8v3.1CriticalReceived
AliasesUBUNTU-CVE-2026-72451DEBIAN-CVE-2026-72451
Published 15-08-2026Last modified 17-08-2026
Open JSON

Vulnerability summary

CVE-2026-72451 is a critical (CVSS 9.8) vulnerability in linux. EPSS estimates a 0.67% chance of exploitation in the next 30 days, higher than 51.1% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.67%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 9 · Related 9
USN-8781-1USN-8816-1USN-8816-2USN-8816-3USN-8816-4USN-8888-1

Timeline

  1. 15-08-2026
    PublishedVulnerability first disclosed.
  2. 17-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: xfrm: Fix xfrm state cache insertion race The xfrm input state cache insertion code checks the validity of the state before acquiring the global xfrm_state_lock. Thus it's possible for someone else to kill the state after it passed the validity check, and then the insertion will add the dead state to the cache. Fix this by moving the validity check inside the lock. This entire function is called on the input path, where BH must be off (e.g., the caller of this function xfrm_input acquires its spinlocks without disabling BH). So there is no need to disable BH here or take the RCU read lock. Remove both and replace them with an assertion that trips if BH is accidentally enabled on some future calling path.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.67%

Chance of exploitation in the next 30 days

Percentile

51%

Versus all other CVEs

30-day change

+0.01 pp

From 0.66% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.67%

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

Ubuntu142 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
  • linux< 6.12.100-1 | < 7.1.5-1
Linux1 product
  • linux≥ 5e4334dc39443645415450163ff5ff1ee7e79784, < 6dab4dec9a49121d079981ac913569f232c06b06 | ≥ 81a331a0e72ddc2f75092603d9577bd1a0ca23ad, < a1a3360a0c44b8b5c134db2a9d0667b61c9cf523 | ≥ 81a331a0e72ddc2f75092603d9577bd1a0ca23ad, < 041859fd55c81ea55e76d051e39b7b79975b8c7d | ≥ 81a331a0e72ddc2f75092603d9577bd1a0ca23ad, < ddd3d0132920319ac426e12456013eadbae67e15 | ≥ 6.12.13, < 6.12.97 | 6.13

3 vendors · 144 products

References

17 links
Show all 17 references