CVE-2022-48726

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Source
https://nvd.nist.gov/vuln/detail/CVE-2022-48726
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-48726.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2022-48726
Downstream
Related
Published
2024-06-20T11:13:15Z
Modified
2025-10-08T06:47:53.330778Z
Summary
RDMA/ucma: Protect mc during concurrent multicast leaves
Details

In the Linux kernel, the following vulnerability has been resolved:

RDMA/ucma: Protect mc during concurrent multicast leaves

Partially revert the commit mentioned in the Fixes line to make sure that allocation and erasing multicast struct are locked.

BUG: KASAN: use-after-free in ucmacleanupmulticast drivers/infiniband/core/ucma.c:491 [inline] BUG: KASAN: use-after-free in ucmadestroyprivatectx+0x914/0xb70 drivers/infiniband/core/ucma.c:579 Read of size 8 at addr ffff88801bb74b00 by task syz-executor.1/25529 CPU: 0 PID: 25529 Comm: syz-executor.1 Not tainted 5.16.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: _dumpstack lib/dumpstack.c:88 [inline] dumpstacklvl+0xcd/0x134 lib/dumpstack.c:106 printaddressdescription.constprop.0.cold+0x8d/0x320 mm/kasan/report.c:247 _kasanreport mm/kasan/report.c:433 [inline] kasanreport.cold+0x83/0xdf mm/kasan/report.c:450 ucmacleanupmulticast drivers/infiniband/core/ucma.c:491 [inline] ucmadestroyprivatectx+0x914/0xb70 drivers/infiniband/core/ucma.c:579 ucmadestroyid+0x1e6/0x280 drivers/infiniband/core/ucma.c:614 ucmawrite+0x25c/0x350 drivers/infiniband/core/ucma.c:1732 vfswrite+0x28e/0xae0 fs/readwrite.c:588 ksyswrite+0x1ee/0x250 fs/readwrite.c:643 dosyscallx64 arch/x86/entry/common.c:50 [inline] dosyscall64+0x35/0xb0 arch/x86/entry/common.c:80 entrySYSCALL64afterhwframe+0x44/0xae

Currently the xarray search can touch a concurrently freeing mc as the xaforeach() is not surrounded by any lock. Rather than hold the lock for a full scan hold it only for the effected items, which is usually an empty list.

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
95fe51096b7adf1d1e7315c49c75e2f75f162584
Fixed
75c610212b9f1756b9384911d3a2c347eee8031c
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
95fe51096b7adf1d1e7315c49c75e2f75f162584
Fixed
2923948ffe0835f7114e948b35bcc42bc9b3baa1
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
95fe51096b7adf1d1e7315c49c75e2f75f162584
Fixed
ee2477e8ccd3d978eeac0dc5a981b286d9bb7b0a
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
95fe51096b7adf1d1e7315c49c75e2f75f162584
Fixed
36e8169ec973359f671f9ec7213547059cae972e

Affected versions

v5.*

v5.10
v5.10-rc1
v5.10-rc2
v5.10-rc3
v5.10-rc4
v5.10-rc5
v5.10-rc6
v5.10-rc7
v5.10.1
v5.10.10
v5.10.11
v5.10.12
v5.10.13
v5.10.14
v5.10.15
v5.10.16
v5.10.17
v5.10.18
v5.10.19
v5.10.2
v5.10.20
v5.10.21
v5.10.22
v5.10.23
v5.10.24
v5.10.25
v5.10.26
v5.10.27
v5.10.28
v5.10.29
v5.10.3
v5.10.30
v5.10.31
v5.10.32
v5.10.33
v5.10.34
v5.10.35
v5.10.36
v5.10.37
v5.10.38
v5.10.39
v5.10.4
v5.10.40
v5.10.41
v5.10.42
v5.10.43
v5.10.44
v5.10.45
v5.10.46
v5.10.47
v5.10.48
v5.10.49
v5.10.5
v5.10.50
v5.10.51
v5.10.52
v5.10.53
v5.10.54
v5.10.55
v5.10.56
v5.10.57
v5.10.58
v5.10.59
v5.10.6
v5.10.60
v5.10.61
v5.10.62
v5.10.63
v5.10.64
v5.10.65
v5.10.66
v5.10.67
v5.10.68
v5.10.69
v5.10.7
v5.10.70
v5.10.71
v5.10.72
v5.10.73
v5.10.74
v5.10.75
v5.10.76
v5.10.77
v5.10.78
v5.10.79
v5.10.8
v5.10.80
v5.10.81
v5.10.82
v5.10.83
v5.10.84
v5.10.85
v5.10.86
v5.10.87
v5.10.88
v5.10.89
v5.10.9
v5.10.90
v5.10.91
v5.10.92
v5.10.93
v5.10.94
v5.10.95
v5.10.96
v5.10.97
v5.10.98
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
v5.15.1
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
v5.15.3
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
v5.16.2
v5.16.3
v5.16.4
v5.16.5
v5.16.6
v5.16.7
v5.17-rc1
v5.9
v5.9-rc2
v5.9-rc3
v5.9-rc4
v5.9-rc5
v5.9-rc6
v5.9-rc7
v5.9-rc8

Database specific 

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            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@75c610212b9f1756b9384911d3a2c347eee8031c",
            "deprecated": false,
            "target": {
                "file": "drivers/infiniband/core/ucma.c"
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            "signature_type": "Line",
            "id": "CVE-2022-48726-c136f1e3"
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            "signature_version": "v1",
            "digest": {
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                "function_hash": "53043868946418596090555698912593938965"
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            "id": "CVE-2022-48726-c7bd81b7"
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            "id": "CVE-2022-48726-cb0d45a2"
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                "function_hash": "207430315606732822852992155948179578125"
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            "signature_type": "Function",
            "id": "CVE-2022-48726-f8998bac"
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            "target": {
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            "signature_type": "Function",
            "id": "CVE-2022-48726-f992625a"
        }
    ]
}

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.10.0
Fixed
5.10.99
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.22
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
5.16.8