CVE-2024-50203 (GCVE-0-2024-50203)

Vulnerability from cvelistv5 – Published: 2024-11-08 06:07 – Updated: 2025-05-22 12:39
VLAI?
Title
bpf, arm64: Fix address emission with tag-based KASAN enabled
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf, arm64: Fix address emission with tag-based KASAN enabled When BPF_TRAMP_F_CALL_ORIG is enabled, the address of a bpf_tramp_image struct on the stack is passed during the size calculation pass and an address on the heap is passed during code generation. This may cause a heap buffer overflow if the heap address is tagged because emit_a64_mov_i64() will emit longer code than it did during the size calculation pass. The same problem could occur without tag-based KASAN if one of the 16-bit words of the stack address happened to be all-ones during the size calculation pass. Fix the problem by assuming the worst case (4 instructions) when calculating the size of the bpf_tramp_image address emission.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 077149478497b2f00ff4fd9da2c892defa6418d8 , < 9e80f366ebfdfafc685fe83a84c34f7ef01cbe88 (git)
Affected: d9664e6ff040798a46cdc5d401064f55b8676c83 , < f521c2a0c0c4585f36d912bf62c852b88682c4f2 (git)
Affected: 19d3c179a37730caf600a97fed3794feac2b197b , < 7db1a2121f3c7903b8e397392beec563c3d00950 (git)
Affected: 19d3c179a37730caf600a97fed3794feac2b197b , < a552e2ef5fd1a6c78267cd4ec5a9b49aa11bbb1c (git)
Affected: 6d218fcc707d6b2c3616b6cd24b948fd4825cfec (git)
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    Linux Linux Affected: 6.11
Unaffected: 0 , < 6.11 (semver)
Unaffected: 6.11.6 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/arm64/net/bpf_jit_comp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9e80f366ebfdfafc685fe83a84c34f7ef01cbe88",
              "status": "affected",
              "version": "077149478497b2f00ff4fd9da2c892defa6418d8",
              "versionType": "git"
            },
            {
              "lessThan": "f521c2a0c0c4585f36d912bf62c852b88682c4f2",
              "status": "affected",
              "version": "d9664e6ff040798a46cdc5d401064f55b8676c83",
              "versionType": "git"
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            {
              "lessThan": "7db1a2121f3c7903b8e397392beec563c3d00950",
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              "versionType": "git"
            },
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              "status": "affected",
              "version": "19d3c179a37730caf600a97fed3794feac2b197b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6d218fcc707d6b2c3616b6cd24b948fd4825cfec",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/arm64/net/bpf_jit_comp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.11"
            },
            {
              "lessThan": "6.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11.6",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.10.3",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, arm64: Fix address emission with tag-based KASAN enabled\n\nWhen BPF_TRAMP_F_CALL_ORIG is enabled, the address of a bpf_tramp_image\nstruct on the stack is passed during the size calculation pass and\nan address on the heap is passed during code generation. This may\ncause a heap buffer overflow if the heap address is tagged because\nemit_a64_mov_i64() will emit longer code than it did during the size\ncalculation pass. The same problem could occur without tag-based\nKASAN if one of the 16-bit words of the stack address happened to\nbe all-ones during the size calculation pass. Fix the problem by\nassuming the worst case (4 instructions) when calculating the size\nof the bpf_tramp_image address emission."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-22T12:39:47.050Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9e80f366ebfdfafc685fe83a84c34f7ef01cbe88"
        },
        {
          "url": "https://git.kernel.org/stable/c/f521c2a0c0c4585f36d912bf62c852b88682c4f2"
        },
        {
          "url": "https://git.kernel.org/stable/c/7db1a2121f3c7903b8e397392beec563c3d00950"
        },
        {
          "url": "https://git.kernel.org/stable/c/a552e2ef5fd1a6c78267cd4ec5a9b49aa11bbb1c"
        }
      ],
      "title": "bpf, arm64: Fix address emission with tag-based KASAN enabled",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-50203",
    "datePublished": "2024-11-08T06:07:54.207Z",
    "dateReserved": "2024-10-21T19:36:19.969Z",
    "dateUpdated": "2025-05-22T12:39:47.050Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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Detection rules are retrieved from Rulezet.