CVE-2025-37893

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Source
https://nvd.nist.gov/vuln/detail/CVE-2025-37893
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-37893.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-37893
Downstream
Related
Published
2025-04-18T07:01:28Z
Modified
2025-10-18T01:18:37.302828Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
LoongArch: BPF: Fix off-by-one error in build_prologue()
Details

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

LoongArch: BPF: Fix off-by-one error in build_prologue()

Vincent reported that running BPF progs with tailcalls on LoongArch causes kernel hard lockup. Debugging the issues shows that the JITed image missing a jirl instruction at the end of the epilogue.

There are two passes in JIT compiling, the first pass set the flags and the second pass generates JIT code based on those flags. With BPF progs mixing bpf2bpf and tailcalls, buildprologue() generates N insns in the first pass and then generates N+1 insns in the second pass. This makes epilogueoffset off by one and we will jump to some unexpected insn and cause lockup. Fix this by inserting a nop insn.

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
5dc615520c4dfb358245680f1904bad61116648e
Fixed
b3ffad2f02db4aace6799fe0049508b8925eae45
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
5dc615520c4dfb358245680f1904bad61116648e
Fixed
205a2182c51ffebaef54d643e3745e720cded08b
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
5dc615520c4dfb358245680f1904bad61116648e
Fixed
c74d95a5679741ef428974ab788f5b0758dc78ae
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
5dc615520c4dfb358245680f1904bad61116648e
Fixed
48b904de2408af5f936f0e03f48dfcddeab58aa0
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
5dc615520c4dfb358245680f1904bad61116648e
Fixed
7e2586991e36663c9bc48c828b83eab180ad30a9

Affected versions

v6.*

v6.1
v6.1-rc1
v6.1-rc2
v6.1-rc3
v6.1-rc4
v6.1-rc5
v6.1-rc6
v6.1-rc7
v6.1-rc8
v6.10
v6.10-rc1
v6.10-rc2
v6.10-rc3
v6.10-rc4
v6.10-rc5
v6.10-rc6
v6.10-rc7
v6.11
v6.11-rc1
v6.11-rc2
v6.11-rc3
v6.11-rc4
v6.11-rc5
v6.11-rc6
v6.11-rc7
v6.12
v6.12-rc1
v6.12-rc2
v6.12-rc3
v6.12-rc4
v6.12-rc5
v6.12-rc6
v6.12-rc7
v6.12.1
v6.12.10
v6.12.11
v6.12.12
v6.12.13
v6.12.14
v6.12.15
v6.12.16
v6.12.17
v6.12.18
v6.12.19
v6.12.2
v6.12.20
v6.12.21
v6.12.22
v6.12.3
v6.12.4
v6.12.5
v6.12.6
v6.12.7
v6.12.8
v6.12.9
v6.13
v6.13-rc1
v6.13-rc2
v6.13-rc3
v6.13-rc4
v6.13-rc5
v6.13-rc6
v6.13-rc7
v6.13.1
v6.13.10
v6.13.2
v6.13.3
v6.13.4
v6.13.5
v6.13.6
v6.13.7
v6.13.8
v6.13.9
v6.14
v6.14-rc1
v6.14-rc2
v6.14-rc3
v6.14-rc4
v6.14-rc5
v6.14-rc6
v6.14-rc7
v6.14.1
v6.2
v6.2-rc1
v6.2-rc2
v6.2-rc3
v6.2-rc4
v6.2-rc5
v6.2-rc6
v6.2-rc7
v6.2-rc8
v6.3
v6.3-rc1
v6.3-rc2
v6.3-rc3
v6.3-rc4
v6.3-rc5
v6.3-rc6
v6.3-rc7
v6.4
v6.4-rc1
v6.4-rc2
v6.4-rc3
v6.4-rc4
v6.4-rc5
v6.4-rc6
v6.4-rc7
v6.5
v6.5-rc1
v6.5-rc2
v6.5-rc3
v6.5-rc4
v6.5-rc5
v6.5-rc6
v6.5-rc7
v6.6
v6.6-rc1
v6.6-rc2
v6.6-rc3
v6.6-rc4
v6.6-rc5
v6.6-rc6
v6.6-rc7
v6.6.1
v6.6.10
v6.6.11
v6.6.12
v6.6.13
v6.6.14
v6.6.15
v6.6.16
v6.6.17
v6.6.18
v6.6.19
v6.6.2
v6.6.20
v6.6.21
v6.6.22
v6.6.23
v6.6.24
v6.6.25
v6.6.26
v6.6.27
v6.6.28
v6.6.29
v6.6.3
v6.6.30
v6.6.31
v6.6.32
v6.6.33
v6.6.34
v6.6.35
v6.6.36
v6.6.37
v6.6.38
v6.6.39
v6.6.4
v6.6.40
v6.6.41
v6.6.42
v6.6.43
v6.6.44
v6.6.45
v6.6.46
v6.6.47
v6.6.48
v6.6.49
v6.6.5
v6.6.50
v6.6.51
v6.6.52
v6.6.53
v6.6.54
v6.6.55
v6.6.56
v6.6.57
v6.6.58
v6.6.59
v6.6.6
v6.6.60
v6.6.61
v6.6.62
v6.6.63
v6.6.64
v6.6.65
v6.6.66
v6.6.67
v6.6.68
v6.6.69
v6.6.7
v6.6.70
v6.6.71
v6.6.72
v6.6.73
v6.6.74
v6.6.75
v6.6.76
v6.6.77
v6.6.78
v6.6.79
v6.6.8
v6.6.80
v6.6.81
v6.6.82
v6.6.83
v6.6.84
v6.6.85
v6.6.86
v6.6.9
v6.7
v6.7-rc1
v6.7-rc2
v6.7-rc3
v6.7-rc4
v6.7-rc5
v6.7-rc6
v6.7-rc7
v6.7-rc8
v6.8
v6.8-rc1
v6.8-rc2
v6.8-rc3
v6.8-rc4
v6.8-rc5
v6.8-rc6
v6.8-rc7
v6.9
v6.9-rc1
v6.9-rc2
v6.9-rc3
v6.9-rc4
v6.9-rc5
v6.9-rc6
v6.9-rc7

Database specific

vanir_signatures

[
    {
        "id": "CVE-2025-37893-160ca085",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
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            ],
            "threshold": 0.9
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        "target": {
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    },
    {
        "id": "CVE-2025-37893-21ce207a",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "function_hash": "271507830326055921805254403360070249910",
            "length": 1423.0
        },
        "target": {
            "file": "arch/loongarch/net/bpf_jit.c",
            "function": "build_prologue"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@b3ffad2f02db4aace6799fe0049508b8925eae45"
    },
    {
        "id": "CVE-2025-37893-3a7868ba",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
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            ],
            "threshold": 0.9
        },
        "target": {
            "file": "arch/loongarch/net/bpf_jit.h"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@7e2586991e36663c9bc48c828b83eab180ad30a9"
    },
    {
        "id": "CVE-2025-37893-3c6b23fe",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
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            ],
            "threshold": 0.9
        },
        "target": {
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    },
    {
        "id": "CVE-2025-37893-5b1fd6e0",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
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            "length": 1423.0
        },
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            "function": "build_prologue"
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    },
    {
        "id": "CVE-2025-37893-6649dce6",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
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    },
    {
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        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
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    },
    {
        "id": "CVE-2025-37893-78a0ed7f",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
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    },
    {
        "id": "CVE-2025-37893-7a5076ea",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
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        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
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    },
    {
        "id": "CVE-2025-37893-9814d4e1",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
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        },
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    },
    {
        "id": "CVE-2025-37893-b087a02f",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
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            "threshold": 0.9
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        },
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    },
    {
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        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
            "line_hashes": [
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            "threshold": 0.9
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        "target": {
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    },
    {
        "id": "CVE-2025-37893-c3761e67",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
            "line_hashes": [
                "118046354818517068845020350438985388078",
                "128694570737138852687850695440813415881",
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            ],
            "threshold": 0.9
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        "target": {
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        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@205a2182c51ffebaef54d643e3745e720cded08b"
    },
    {
        "id": "CVE-2025-37893-f24841fe",
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        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
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            "length": 1423.0
        },
        "target": {
            "file": "arch/loongarch/net/bpf_jit.c",
            "function": "build_prologue"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@48b904de2408af5f936f0e03f48dfcddeab58aa0"
    }
]

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.1.0
Fixed
6.6.87
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.23
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.13.11
Type
ECOSYSTEM
Events
Introduced
6.14.0
Fixed
6.14.2