High severity · published Apr 24, 2026
CVE-2026-31553
KVM: arm64: Fix the descriptor address in __kvm_at_swap_desc()
8.8
CVSS
0.1%
EPSS
No
On KEV
Description
In the Linux kernel, the following vulnerability has been resolved:
KVM: arm64: Fix the descriptor address in __kvm_at_swap_desc()
Using "(u64 __user *)hva + offset" to get the virtual addresses of S1/S2
descriptors looks really wrong, if offset is not zero. What we want to get
for swapping is hva + offset, not hva + offset*8. ;-)
Fix it.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 2% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
6.19.1 before 6.19.11; 6.19; 7.0; 7.0; 7.0; 7.0; +3 more · source: NVD
LI
Linux · Linux
f6927b41d57390c597a126063e2e518911976878 before 4307e05e568782fc92eff651b09ee5dee88a058d; f6927b41d57390c597a126063e2e518911976878 before 0496acc42fb51eee040b5170cec05cec41385540; 6.19 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-31553
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-31553
Patch
https://git.kernel.org/stable/c/0496acc42fb51eee040b5170cec05cec41385540
Patch
https://git.kernel.org/stable/c/4307e05e568782fc92eff651b09ee5dee88a058d
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