CVE-2022-48793
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-48793
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-48793.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2022-48793
- Downstream
- Related
- Published
- 2024-07-16T11:43:48Z
- Modified
- 2025-10-08T06:00:59.916990Z
- Summary
- KVM: x86: nSVM: fix potential NULL derefernce on nested migration
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
KVM: x86: nSVM: fix potential NULL derefernce on nested migration
Turns out that due to review feedback and/or rebases I accidentally moved the call to nestedsvmload_cr3 to be too early, before the NPT is enabled, which is very wrong to do.
KVM can't even access guest memory at that point as nested NPT is needed for that, and of course it won't initialize the walk_mmu, which is main issue the patch was addressing.
Fix this for real.
- References
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced232f75d3b4b5456de6f0b671aa86345d62de1473Fixed74b426bea4f7e3b081add2b88d4fba16d3af7ab6
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced232f75d3b4b5456de6f0b671aa86345d62de1473Fixed352193edda48e08e8824a7ece09aec830a603cfe
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced232f75d3b4b5456de6f0b671aa86345d62de1473Fixede1779c2714c3023e4629825762bcbc43a3b943df
Affected versions
v5.*
v5.12
v5.12-rc4
v5.12-rc5
v5.12-rc6
v5.12-rc7
v5.12-rc8
v5.13
v5.13-rc1
v5.13-rc2
v5.13-rc3
v5.13-rc4
v5.13-rc5
v5.13-rc6
v5.13-rc7
v5.14
v5.14-rc1
v5.14-rc2
v5.14-rc3
v5.14-rc4
v5.14-rc5
v5.14-rc6
v5.14-rc7
v5.15
v5.15-rc1
v5.15-rc2
v5.15-rc3
v5.15-rc4
v5.15-rc5
v5.15-rc6
v5.15-rc7
v5.15.1
v5.15.10
v5.15.11
v5.15.12
v5.15.13
v5.15.14
v5.15.15
v5.15.16
v5.15.17
v5.15.18
v5.15.19
v5.15.2
v5.15.20
v5.15.21
v5.15.22
v5.15.23
v5.15.24
v5.15.3
v5.15.4
v5.15.5
v5.15.6
v5.15.7
v5.15.8
v5.15.9
v5.16
v5.16-rc1
v5.16-rc2
v5.16-rc3
v5.16-rc4
v5.16-rc5
v5.16-rc6
v5.16-rc7
v5.16-rc8
v5.16.1
v5.16.10
v5.16.2
v5.16.3
v5.16.4
v5.16.5
v5.16.6
v5.16.7
v5.16.8
v5.16.9
v5.17-rc1
v5.17-rc2
v5.17-rc3
Database specific
{
"vanir_signatures": [
{
"signature_version": "v1",
"digest": {
"threshold": 0.9,
"line_hashes": [
"111928567971701475748337662752526961624",
"108778657089085502445054755786402265292",
"339142716567653978029283186433089447879",
"182822944490200011792034593110508767277",
"110878015638551237011795770910256143117",
"122170852949259316088392017712303054206",
"306613831125994516841043409544301957226",
"211572147858279416271831413775007605155",
"112077551116105331357919095504667757402",
"249355694910005251987291756633220364198",
"151373870696948737323532978660349868538"
]
},
"id": "CVE-2022-48793-052be565",
"deprecated": false,
"target": {
"file": "arch/x86/kvm/svm/nested.c"
},
"signature_type": "Line",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@352193edda48e08e8824a7ece09aec830a603cfe"
},
{
"signature_version": "v1",
"digest": {
"length": 2466.0,
"function_hash": "246277879032195249318421535464958150590"
},
"id": "CVE-2022-48793-26b2fd79",
"deprecated": false,
"target": {
"file": "arch/x86/kvm/svm/nested.c",
"function": "svm_set_nested_state"
},
"signature_type": "Function",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@352193edda48e08e8824a7ece09aec830a603cfe"
}
]
}