9

CVE-2026-72279: linux

CVSS: 9.0v3.1CriticalReceived
AliasesUBUNTU-CVE-2026-72279DEBIAN-CVE-2026-72279
Published 15-08-2026Last modified 17-08-2026
Open JSON

Vulnerability summary

CVE-2026-72279 is a critical (CVSS 9.0) vulnerability in linux. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 8% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.0/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.19%
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 6 · Related 6
USN-8816-1USN-8816-2USN-8816-3USN-8816-4USN-8888-1USN-8888-2

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: KVM: arm64: nv: Respect read-only PFN when mapping L1 VNCR KVM currently maps the L1 VNCR into the host stage-1 by relying entirely on the permissions of the guest stage-1. At the same time, it is entirely possible that the backing PFN is read-only (e.g. RO memslot), meaning that the L1 VNCR should use at most a read-only mapping. Cache the writability of the PFN in the VNCR TLB and use it to constrain the resulting fixmap permissions. Promote VNCR permission faults to an SEA in the case where the guest attempts to write to a read-only endpoint. Conveniently, this also plugs a page leak found by Sashiko [*] resulting from the early return for a read-only PFN.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

8%

Versus all other CVEs

30-day change

0.00 pp

From 0.19% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.19%

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

Ubuntu120 products
  • linux< 7.0.0-34.34
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 7.0.0-1013.13
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 7.1.5-1
Linux1 product
  • linux≥ 2a359e072596fcb2e9e85017a865e3618a2fe5b5, < 5c50db5bcbb9073cb2fd97be51b962de92f429e9 | ≥ 2a359e072596fcb2e9e85017a865e3618a2fe5b5, < d35defbdfcb15296ebe28968ad7452c1a8c11cea | ≥ 2a359e072596fcb2e9e85017a865e3618a2fe5b5, < 2684e02bac41c5220f6c1ab2bdcc957b71812977 | 6.16

3 vendors · 122 products

References

13 links
Show all 13 references