CVE-2025-71129 (GCVE-0-2025-71129)
Vulnerability from cvelistv5
Published
2026-01-14 15:07
Modified
2026-02-09 08:35
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: LoongArch: BPF: Sign extend kfunc call arguments The kfunc calls are native calls so they should follow LoongArch calling conventions. Sign extend its arguments properly to avoid kernel panic. This is done by adding a new emit_abi_ext() helper. The emit_abi_ext() helper performs extension in place meaning a value already store in the target register (Note: this is different from the existing sign_extend() helper and thus we can't reuse it).
References
Impacted products
Vendor Product Version
Linux Linux Version: 5dc615520c4dfb358245680f1904bad61116648e
Version: 5dc615520c4dfb358245680f1904bad61116648e
Version: 5dc615520c4dfb358245680f1904bad61116648e
Version: 5dc615520c4dfb358245680f1904bad61116648e
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/loongarch/net/bpf_jit.c",
            "arch/loongarch/net/bpf_jit.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
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          "product": "Linux",
          "programFiles": [
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            "arch/loongarch/net/bpf_jit.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.1"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.120",
              "versionType": "semver"
            },
            {
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              "version": "6.12.64",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: BPF: Sign extend kfunc call arguments\n\nThe kfunc calls are native calls so they should follow LoongArch calling\nconventions. Sign extend its arguments properly to avoid kernel panic.\nThis is done by adding a new emit_abi_ext() helper. The emit_abi_ext()\nhelper performs extension in place meaning a value already store in the\ntarget register (Note: this is different from the existing sign_extend()\nhelper and thus we can\u0027t reuse it)."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-09T08:35:25.148Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/fd43edf357a3a1f5ed1c4bf450b60001c9091c39"
        },
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          "url": "https://git.kernel.org/stable/c/0d666db731e95890e0eda7ea61bc925fd2be90c6"
        },
        {
          "url": "https://git.kernel.org/stable/c/321993a874f571a94b5a596f1132f798c663b56e"
        },
        {
          "url": "https://git.kernel.org/stable/c/3f5a238f24d7b75f9efe324d3539ad388f58536e"
        }
      ],
      "title": "LoongArch: BPF: Sign extend kfunc call arguments",
      "x_generator": {
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      }
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-71129",
    "datePublished": "2026-01-14T15:07:45.786Z",
    "dateReserved": "2026-01-13T15:30:19.655Z",
    "dateUpdated": "2026-02-09T08:35:25.148Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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