CVE-2024-38610

Patch #1 fixes a bunch of issues I spotted in the acrn driver. It compiles, that's all I know. I'll appreciate some review and testing from acrn folks.

Patch #2+#3 improve followpte(), passing a VMA instead of the MM, adding more sanity checks, and improving the documentation. Gave it a quick test on x86-64 using VMPAT that ends up using follow_pte().

This patch (of 3):

We currently miss handling various cases, resulting in a dangerous followpte() (previously followpfn()) usage.

(1) We're not checking PTE write permissions.

Maybe we should simply always require ptewrite() like we do for pinuserpagesfast(FOLLWRITE)? Hard to tell, so let's check for ACRNMEMACCESSWRITE for now.

(2) We're not rejecting refcounted pages.

As we are not using MMU notifiers, messing with refcounted pages is dangerous and can result in use-after-free. Let's make sure to reject them.

(3) We are only looking at the first PTE of a bigger range.

We only lookup a single PTE, but memmap->len may span a larger area. Let's loop over all involved PTEs and make sure the PFN range is actually contiguous. Reject everything else: it couldn't have worked either way, and rather made use access PFNs we shouldn't be accessing.

Database specific

{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/38xxx/CVE-2024-38610.json"
}

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: Introduced

b9c43aa0b18da5619aac347d54cb67fe30d1f884

Fixed

5c6705aa47b5b78d7ad36fea832bb69caa5bf49a

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

8a6e85f75a83d16a71077e41f2720c691f432002

Fixed

afeb0e69627695f759fc73c39c1640dbf8649b32

Fixed

e873f36ec890bece26ecce850e969917bceebbb6

Fixed

4c4ba3cf3a15ccfbaf787d0296fa42cdb00da9b4

Fixed

2c8d6e24930b8ef7d4a81787627c559ae0e0d3bb

Fixed

3d6586008f7b638f91f3332602592caa8b00b559

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Last affected

149d5fb7e0124c3763e92edd1fde19417f4d2d09

Last affected

02098ac42b7ff055ec72cd083ee1eb0a23481a19

Affected versions

v2.*

v2.6.12

v2.6.12-rc2

v2.6.12-rc3

v2.6.12-rc4

v2.6.12-rc5

v2.6.12-rc6

v2.6.13

v2.6.13-rc1

v2.6.13-rc2

v2.6.13-rc3

v2.6.13-rc4

v2.6.13-rc5

v2.6.13-rc6

v2.6.13-rc7

v2.6.14

v2.6.14-rc1

v2.6.14-rc2

v2.6.14-rc3

v2.6.14-rc4

v2.6.14-rc5

v2.6.15

v2.6.15-rc1

v2.6.15-rc2

v2.6.15-rc3

v2.6.15-rc4

v2.6.15-rc5

v2.6.15-rc6

v2.6.15-rc7

v2.6.16

v2.6.16-rc1

v2.6.16-rc2

v2.6.16-rc3

v2.6.16-rc4

v2.6.16-rc5

v2.6.16-rc6

v2.6.17

v2.6.17-rc1

v2.6.17-rc2

v2.6.17-rc3

v2.6.17-rc4

v2.6.17-rc5

v2.6.17-rc6

v2.6.18

v2.6.18-rc1

v2.6.18-rc2

v2.6.18-rc3

v2.6.18-rc4

v2.6.18-rc5

v2.6.18-rc6

v2.6.18-rc7

v2.6.19

v2.6.19-rc1

v2.6.19-rc2

v2.6.19-rc3

v2.6.19-rc4

v2.6.19-rc5

v2.6.19-rc6

v2.6.20

v2.6.20-rc1

v2.6.20-rc2

v2.6.20-rc3

v2.6.20-rc4

v2.6.20-rc5

v2.6.20-rc6

v2.6.20-rc7

v2.6.21

v2.6.21-rc1

v2.6.21-rc2

v2.6.21-rc3

v2.6.21-rc4

v2.6.21-rc5

v2.6.21-rc6

v2.6.21-rc7

v2.6.22

v2.6.22-rc1

v2.6.22-rc2

v2.6.22-rc3

v2.6.22-rc4

v2.6.22-rc5

v2.6.22-rc6

v2.6.22-rc7

v2.6.23

v2.6.23-rc1

v2.6.23-rc2

v2.6.23-rc3

v2.6.23-rc4

v2.6.23-rc5

v2.6.23-rc6

v2.6.23-rc7

v2.6.23-rc8

v2.6.23-rc9

v2.6.24

v2.6.24-rc1

v2.6.24-rc2

v2.6.24-rc3

v2.6.24-rc4

v2.6.24-rc5

v2.6.24-rc6

v2.6.24-rc7

v2.6.24-rc8

v2.6.25

v2.6.25-rc1

v2.6.25-rc2

v2.6.25-rc3

v2.6.25-rc4

v2.6.25-rc5

v2.6.25-rc6

v2.6.25-rc7

v2.6.25-rc8

v2.6.25-rc9

v2.6.26

v2.6.26-rc1

v2.6.26-rc2

v2.6.26-rc3

v2.6.26-rc4

v2.6.26-rc5

v2.6.26-rc6

v2.6.26-rc7

v2.6.26-rc8

v2.6.26-rc9

v2.6.27

v2.6.27-rc1

v2.6.27-rc2

v2.6.27-rc3

v2.6.27-rc4

v2.6.27-rc5

v2.6.27-rc6

v2.6.27-rc7

v2.6.27-rc8

v2.6.27-rc9

v2.6.28

v2.6.28-rc1

v2.6.28-rc2

v2.6.28-rc3

v2.6.28-rc4

v2.6.28-rc5

v2.6.28-rc6

v2.6.28-rc7

v2.6.28-rc8

v2.6.28-rc9

v2.6.29

v2.6.29-rc1

v2.6.29-rc2

v2.6.29-rc3

v2.6.29-rc4

v2.6.29-rc5

v2.6.29-rc6

v2.6.29-rc7

v2.6.29-rc8

v2.6.30

v2.6.30-rc1

v2.6.30-rc2

v2.6.30-rc3

v2.6.30-rc4

v2.6.30-rc5

v2.6.30-rc6

v2.6.30-rc7

v2.6.30-rc8

v2.6.31

v2.6.31-rc1

v2.6.31-rc2

v2.6.31-rc3

v2.6.31-rc4

v2.6.31-rc5

v2.6.31-rc6

v2.6.31-rc7

v2.6.31-rc8

v2.6.31-rc9

v2.6.32

v2.6.32-rc1

v2.6.32-rc2

v2.6.32-rc3

v2.6.32-rc4

v2.6.32-rc5

v2.6.32-rc6

v2.6.32-rc7

v2.6.32-rc8

v2.6.33

v2.6.33-rc1

v2.6.33-rc2

v2.6.33-rc3

v2.6.33-rc4

v2.6.33-rc5

v2.6.33-rc6

v2.6.33-rc7

v2.6.33-rc8

v2.6.34

v2.6.34-rc1

v2.6.34-rc2

v2.6.34-rc3

v2.6.34-rc4

v2.6.34-rc5

v2.6.34-rc6

v2.6.34-rc7

v2.6.35

v2.6.35-rc1

v2.6.35-rc2

v2.6.35-rc3

v2.6.35-rc4

v2.6.35-rc5

v2.6.35-rc6

v2.6.36

v2.6.36-rc1

v2.6.36-rc2

v2.6.36-rc3

v2.6.36-rc4

v2.6.36-rc5

v2.6.36-rc6

v2.6.36-rc7

v2.6.36-rc8

v2.6.37

v2.6.37-rc1

v2.6.37-rc2

v2.6.37-rc3

v2.6.37-rc4

v2.6.37-rc5

v2.6.37-rc6

v2.6.37-rc7

v2.6.37-rc8

v2.6.38

v2.6.38-rc1

v2.6.38-rc2

v2.6.38-rc3

v2.6.38-rc4

v2.6.38-rc5

v2.6.38-rc6

v2.6.38-rc7

v2.6.38-rc8

v2.6.39

v2.6.39-rc1

v2.6.39-rc2

v2.6.39-rc3

v2.6.39-rc4

v2.6.39-rc5

v2.6.39-rc6

v2.6.39-rc7

v3.*

v3.0

v3.0-rc1

v3.0-rc2

v3.0-rc3

v3.0-rc4

v3.0-rc5

v3.0-rc6

v3.0-rc7

v3.1

v3.1-rc1

v3.1-rc10

v3.1-rc2

v3.1-rc3

v3.1-rc4

v3.1-rc5

v3.1-rc6

v3.1-rc7

v3.1-rc8

v3.1-rc9

v3.10

v3.10-rc1

v3.10-rc2

v3.10-rc3

v3.10-rc4

v3.10-rc5

v3.10-rc6

v3.10-rc7

v3.11

v3.11-rc1

v3.11-rc2

v3.11-rc3

v3.11-rc4

v3.11-rc5

v3.11-rc6

v3.11-rc7

v3.12

v3.12-rc1

v3.12-rc2

v3.12-rc3

v3.12-rc4

v3.12-rc5

v3.12-rc6

v3.12-rc7

v3.13

v3.13-rc1

v3.13-rc2

v3.13-rc3

v3.13-rc4

v3.13-rc5

v3.13-rc6

v3.13-rc7

v3.13-rc8

v3.14

v3.14-rc1

v3.14-rc2

v3.14-rc3

v3.14-rc4

v3.14-rc5

v3.14-rc6

v3.14-rc7

v3.14-rc8

v3.15

v3.15-rc1

v3.15-rc2

v3.15-rc3

v3.15-rc4

v3.15-rc5

v3.15-rc6

v3.15-rc7

v3.15-rc8

v3.16

v3.16-rc1

v3.16-rc2

v3.16-rc3

v3.16-rc4

v3.16-rc5

v3.16-rc6

v3.16-rc7

v3.17

v3.17-rc1

v3.17-rc2

v3.17-rc3

v3.17-rc4

v3.17-rc5

v3.17-rc6

v3.17-rc7

v3.18

v3.18-rc1

v3.18-rc2

v3.18-rc3

v3.18-rc4

v3.18-rc5

v3.18-rc6

v3.18-rc7

v3.19

v3.19-rc1

v3.19-rc2

v3.19-rc3

v3.19-rc4

v3.19-rc5

v3.19-rc6

v3.19-rc7

v3.2

v3.2-rc1

v3.2-rc2

v3.2-rc3

v3.2-rc4

v3.2-rc5

v3.2-rc6

v3.2-rc7

v3.3

v3.3-rc1

v3.3-rc2

v3.3-rc3

v3.3-rc4

v3.3-rc5

v3.3-rc6

v3.3-rc7

v3.4

v3.4-rc1

v3.4-rc2

v3.4-rc3

v3.4-rc4

v3.4-rc5

v3.4-rc6

v3.4-rc7

v3.5

v3.5-rc1

v3.5-rc2

v3.5-rc3

v3.5-rc4

v3.5-rc5

v3.5-rc6

v3.5-rc7

v3.6

v3.6-rc1

v3.6-rc2

v3.6-rc3

v3.6-rc4

v3.6-rc5

v3.6-rc6

v3.6-rc7

v3.7

v3.7-rc1

v3.7-rc2

v3.7-rc3

v3.7-rc4

v3.7-rc5

v3.7-rc6

v3.7-rc7

v3.7-rc8

v3.8

v3.8-rc1

v3.8-rc2

v3.8-rc3

v3.8-rc4

v3.8-rc5

v3.8-rc6

v3.8-rc7

v3.9

v3.9-rc1

v3.9-rc2

v3.9-rc3

v3.9-rc4

v3.9-rc5

v3.9-rc6

v3.9-rc7

v3.9-rc8

v4.*

v4.0

v4.0-rc1

v4.0-rc2

v4.0-rc3

v4.0-rc4

v4.0-rc5

v4.0-rc6

v4.0-rc7

v4.1

v4.1-rc1

v4.1-rc2

v4.1-rc3

v4.1-rc4

v4.1-rc5

v4.1-rc6

v4.1-rc7

v4.1-rc8

v4.10

v4.10-rc1

v4.10-rc2

v4.10-rc3

v4.10-rc4

v4.10-rc5

v4.10-rc6

v4.10-rc7

v4.10-rc8

v4.11

v4.11-rc1

v4.11-rc2

v4.11-rc3

v4.11-rc4

v4.11-rc5

v4.11-rc6

v4.11-rc7

v4.11-rc8

v4.12

v4.12-rc1

v4.12-rc2

v4.12-rc3

v4.12-rc4

v4.12-rc5

v4.12-rc6

v4.12-rc7

v4.13

v4.13-rc1

v4.13-rc2

v4.13-rc3

v4.13-rc4

v4.13-rc5

v4.13-rc6

v4.13-rc7

v4.14

v4.14-rc1

v4.14-rc2

v4.14-rc3

v4.14-rc4

v4.14-rc5

v4.14-rc6

v4.14-rc7

v4.14-rc8

v4.15

v4.15-rc1

v4.15-rc2

v4.15-rc3

v4.15-rc4

v4.15-rc5

v4.15-rc6

v4.15-rc7

v4.15-rc8

v4.15-rc9

v4.16

v4.16-rc1

v4.16-rc2

v4.16-rc3

v4.16-rc4

v4.16-rc5

v4.16-rc6

v4.16-rc7

v4.17

v4.17-rc1

v4.17-rc2

v4.17-rc3

v4.17-rc4

v4.17-rc5

v4.17-rc6

v4.17-rc7

v4.18

v4.18-rc1

v4.18-rc2

v4.18-rc3

v4.18-rc4

v4.18-rc5

v4.18-rc6

v4.18-rc7

v4.18-rc8

v4.19

v4.19-rc1

v4.19-rc2

v4.19-rc3

v4.19-rc4

v4.19-rc5

v4.19-rc6

v4.19-rc7

v4.19-rc8

v4.2

v4.2-rc1

v4.2-rc2

v4.2-rc3

v4.2-rc4

v4.2-rc5

v4.2-rc6

v4.2-rc7

v4.2-rc8

v4.20

v4.20-rc1

v4.20-rc2

v4.20-rc3

v4.20-rc4

v4.20-rc5

v4.20-rc6

v4.20-rc7

v4.3

v4.3-rc1

v4.3-rc2

v4.3-rc3

v4.3-rc4

v4.3-rc5

v4.3-rc6

v4.3-rc7

v4.4

v4.4-rc1

v4.4-rc2

v4.4-rc3

v4.4-rc4

v4.4-rc5

v4.4-rc6

v4.4-rc7

v4.4-rc8

v4.5

v4.5-rc1

v4.5-rc2

v4.5-rc3

v4.5-rc4

v4.5-rc5

v4.5-rc6

v4.5-rc7

v4.6

v4.6-rc1

v4.6-rc2

v4.6-rc3

v4.6-rc4

v4.6-rc5

v4.6-rc6

v4.6-rc7

v4.7

v4.7-rc1

v4.7-rc2

v4.7-rc3

v4.7-rc4

v4.7-rc5

v4.7-rc6

v4.7-rc7

v4.8

v4.8-rc1

v4.8-rc2

v4.8-rc3

v4.8-rc4

v4.8-rc5

v4.8-rc6

v4.8-rc7

v4.8-rc8

v4.9

v4.9-rc1

v4.9-rc2

v4.9-rc3

v4.9-rc4

v4.9-rc5

v4.9-rc6

v4.9-rc7

v4.9-rc8

v5.*

v5.0

v5.0-rc1

v5.0-rc2

v5.0-rc3

v5.0-rc4

v5.0-rc5

v5.0-rc6

v5.0-rc7

v5.0-rc8

v5.1

v5.1-rc1

v5.1-rc2

v5.1-rc3

v5.1-rc4

v5.1-rc5

v5.1-rc6

v5.1-rc7

v5.10

v5.10-rc1

v5.10-rc2

v5.10-rc3

v5.10-rc4

v5.10-rc5

v5.10-rc6

v5.10-rc7

v5.11

v5.11-rc1

v5.11-rc2

v5.11-rc3

v5.11-rc4

v5.11-rc5

v5.11-rc6

v5.11-rc7

v5.12

v5.12-rc1

v5.12-rc1-dontuse

v5.12-rc2

v5.12-rc3

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

v5.15.100

v5.15.101

v5.15.102

v5.15.103

v5.15.104

v5.15.105

v5.15.106

v5.15.107

v5.15.108

v5.15.109

v5.15.110

v5.15.111

v5.15.112

v5.15.113

v5.15.114

v5.15.115

v5.15.116

v5.15.117

v5.15.118

v5.15.119

v5.15.120

v5.15.121

v5.15.122

v5.15.123

v5.15.124

v5.15.125

v5.15.126

v5.15.127

v5.15.128

v5.15.129

v5.15.130

v5.15.131

v5.15.132

v5.15.133

v5.15.134

v5.15.135

v5.15.136

v5.15.137

v5.15.138

v5.15.139

v5.15.140

v5.15.141

v5.15.142

v5.15.143

v5.15.144

v5.15.145

v5.15.146

v5.15.147

v5.15.148

v5.15.149

v5.15.150

v5.15.151

v5.15.152

v5.15.153

v5.15.154

v5.15.155

v5.15.156

v5.15.157

v5.15.158

v5.15.159

v5.15.160

v5.15.33

v5.15.34

v5.15.35

v5.15.36

v5.15.37

v5.15.38

v5.15.39

v5.15.40

v5.15.41

v5.15.42

v5.15.43

v5.15.44

v5.15.45

v5.15.46

v5.15.47

v5.15.48

v5.15.49

v5.15.50

v5.15.51

v5.15.52

v5.15.53

v5.15.54

v5.15.55

v5.15.56

v5.15.57

v5.15.58

v5.15.59

v5.15.60

v5.15.61

v5.15.62

v5.15.63

v5.15.64

v5.15.65

v5.15.66

v5.15.67

v5.15.68

v5.15.69

v5.15.70

v5.15.71

v5.15.72

v5.15.73

v5.15.74

v5.15.75

v5.15.76

v5.15.77

v5.15.78

v5.15.79

v5.15.80

v5.15.81

v5.15.82

v5.15.83

v5.15.84

v5.15.85

v5.15.86

v5.15.87

v5.15.88

v5.15.89

v5.15.90

v5.15.91

v5.15.92

v5.15.93

v5.15.94

v5.15.95

v5.15.96

v5.15.97

v5.15.98

v5.15.99

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

v5.16.11

v5.16.12

v5.16.13

v5.16.14

v5.16.15

v5.16.16

v5.16.17

v5.16.18

v5.16.2

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v6.9.1

v6.9.2

Database specific

vanir_signatures

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        "id": "CVE-2024-38610-004cbc7b",
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            "file": "drivers/virt/acrn/mm.c"
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        "id": "CVE-2024-38610-024bb46a",
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        "id": "CVE-2024-38610-0d06eea7",
        "signature_type": "Line",
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    {
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        "deprecated": false,
        "id": "CVE-2024-38610-24a41130",
        "signature_type": "Line",
        "target": {
            "file": "drivers/virt/acrn/mm.c"
        },
        "signature_version": "v1"
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    {
        "digest": {
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        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@2c8d6e24930b8ef7d4a81787627c559ae0e0d3bb",
        "deprecated": false,
        "id": "CVE-2024-38610-52dc3dc6",
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    {
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]

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-38610.json"

git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git