CVE-2026-72277
KVM: arm64: nv: Inject SEA if guest VNCR isn't normal memory
Description
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Inject SEA if guest VNCR isn't normal memory When constructing an L1 VNCR mapping, KVM unconditionally uses cacheable memory attributes, even if the underlying PFN isn't memory. This gets particularly hairy if the endpoint doesn't support cacheable memory attributes, potentially throwing an SError on writeback... While KVM does permit cacheable memory attributes on certain PFNMAP VMAs, kvm_translate_vncr() isn't currently grabbing the VMA. So do the simpler thing for now and just reject everything that isn't memory.
INFO
Published Date :
Aug. 15, 2026, 6:21 a.m.
Last Modified :
Aug. 17, 2026, 6:18 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Update the Linux kernel.
- Apply the relevant patches to KVM.
- Ensure guest VNCR mappings use normal memory attributes.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-72277.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72277 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-72277
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-72277 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72277 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2a359e072596fcb2e9e85017a865e3618a2fe5b5', 'lessThan': 'd5436e18e4fc2886ac306304d884ea3b92e1edbf', 'versionType': 'git'}, {'status': 'affected', 'version': '2a359e072596fcb2e9e85017a865e3618a2fe5b5', 'lessThan': 'bc00e0e376ee3572f5d26c174473abef1e35decc', 'versionType': 'git'}, {'status': 'affected', 'version': '2a359e072596fcb2e9e85017a865e3618a2fe5b5', 'lessThan': '4bd7dbe0b2243e6aa735cae4d5e1ff988b30b2a6', 'versionType': 'git'}], 'programFiles': ['arch/arm64/kvm/nested.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.16'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.16', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc4', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['arch/arm64/kvm/nested.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2a359e072596fcb2e9e85017a865e3618a2fe5b5', 'lessThan': 'd5436e18e4fc2886ac306304d884ea3b92e1edbf', 'versionType': 'git'}, {'status': 'affected', 'version': '2a359e072596fcb2e9e85017a865e3618a2fe5b5', 'lessThan': 'bc00e0e376ee3572f5d26c174473abef1e35decc', 'versionType': 'git'}, {'status': 'affected', 'version': '2a359e072596fcb2e9e85017a865e3618a2fe5b5', 'lessThan': '4bd7dbe0b2243e6aa735cae4d5e1ff988b30b2a6', 'versionType': 'git'}], 'programFiles': ['arch/arm64/kvm/nested.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.16'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.16', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['arch/arm64/kvm/nested.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2a359e072596fcb2e9e85017a865e3618a2fe5b5', 'lessThan': 'd5436e18e4fc2886ac306304d884ea3b92e1edbf', 'versionType': 'git'}, {'status': 'affected', 'version': '2a359e072596fcb2e9e85017a865e3618a2fe5b5', 'lessThan': 'bc00e0e376ee3572f5d26c174473abef1e35decc', 'versionType': 'git'}, {'status': 'affected', 'version': '2a359e072596fcb2e9e85017a865e3618a2fe5b5', 'lessThan': '4bd7dbe0b2243e6aa735cae4d5e1ff988b30b2a6', 'versionType': 'git'}], 'programFiles': ['arch/arm64/kvm/nested.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.16'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.16', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc4', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['arch/arm64/kvm/nested.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Inject SEA if guest VNCR isn't normal memory When constructing an L1 VNCR mapping, KVM unconditionally uses cacheable memory attributes, even if the underlying PFN isn't memory. This gets particularly hairy if the endpoint doesn't support cacheable memory attributes, potentially throwing an SError on writeback... While KVM does permit cacheable memory attributes on certain PFNMAP VMAs, kvm_translate_vncr() isn't currently grabbing the VMA. So do the simpler thing for now and just reject everything that isn't memory. Added Reference https://git.kernel.org/stable/c/4bd7dbe0b2243e6aa735cae4d5e1ff988b30b2a6 Added Reference https://git.kernel.org/stable/c/bc00e0e376ee3572f5d26c174473abef1e35decc Added Reference https://git.kernel.org/stable/c/d5436e18e4fc2886ac306304d884ea3b92e1edbf