CVE-2026-90295 (GCVE-0-2026-90295)
Vulnerability from cvelistv5
Published
2026-09-17 16:08
Modified
2026-10-19 09:01
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: cpufreq: imx6q: fix out-of-bounds write when probed more than once imx6_soc_volt is allocated fresh on every probe, sized to the number of ARM OPPs: imx6_soc_volt = devm_kcalloc(cpu_dev, num, sizeof(*imx6_soc_volt), GFP_KERNEL); but it is filled through soc_opp_count, which has static storage and is never reset. A second bind after an unbind keeps indexing from where the first one stopped, and writes past the end of the new array. Unbinding and rebinding the driver on qemu's mcimx6ul-evk, under KASAN: BUG: KASAN: slab-out-of-bounds in imx6q_cpufreq_probe+0x3b0/0xa34 Write of size 4 at addr c5e90480 by task binder/73 imx6q_cpufreq_probe from platform_probe+0x88/0xe4 platform_probe from really_probe+0x108/0x384 bind_store from kernfs_fop_write_iter+0x1b4/0x28c The write lands one u32 past the end of the allocation. soc_opp_count is only read a few lines below the loop that fills it, so it never needed static storage. Make it a local.
References
Impacted products
Vendor Product Version
Linux Linux Version: b4573d1d657aae28bedf3a9a1f5367e09c80d1d6
Version: b4573d1d657aae28bedf3a9a1f5367e09c80d1d6
Version: b4573d1d657aae28bedf3a9a1f5367e09c80d1d6
Version: b4573d1d657aae28bedf3a9a1f5367e09c80d1d6
Version: b4573d1d657aae28bedf3a9a1f5367e09c80d1d6
Version: b4573d1d657aae28bedf3a9a1f5367e09c80d1d6
Version: b4573d1d657aae28bedf3a9a1f5367e09c80d1d6
Version: b4573d1d657aae28bedf3a9a1f5367e09c80d1d6
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/cpufreq/imx6q-cpufreq.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/cpufreq/imx6q-cpufreq.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.14"
            },
            {
              "lessThan": "3.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.270",
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                  "vulnerable": true
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                  "versionEndExcluding": "5.15.221",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.188",
                  "versionStartIncluding": "3.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.157",
                  "versionStartIncluding": "3.14",
                  "vulnerable": true
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.110",
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.52",
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                },
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                  "versionEndExcluding": "7.3",
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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\ncpufreq: imx6q: fix out-of-bounds write when probed more than once\n\nimx6_soc_volt is allocated fresh on every probe, sized to the number of\nARM OPPs:\n\n\timx6_soc_volt = devm_kcalloc(cpu_dev, num, sizeof(*imx6_soc_volt),\n\t\t\t\t     GFP_KERNEL);\n\nbut it is filled through soc_opp_count, which has static storage and is\nnever reset. A second bind after an unbind keeps indexing from where the\nfirst one stopped, and writes past the end of the new array.\n\nUnbinding and rebinding the driver on qemu\u0027s mcimx6ul-evk, under KASAN:\n\n  BUG: KASAN: slab-out-of-bounds in imx6q_cpufreq_probe+0x3b0/0xa34\n  Write of size 4 at addr c5e90480 by task binder/73\n   imx6q_cpufreq_probe from platform_probe+0x88/0xe4\n   platform_probe from really_probe+0x108/0x384\n   bind_store from kernfs_fop_write_iter+0x1b4/0x28c\n\nThe write lands one u32 past the end of the allocation.\n\nsoc_opp_count is only read a few lines below the loop that fills it, so it\nnever needed static storage. Make it a local."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:01:13.419Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/263a35331169390f7f9ccb51d74e668610199af4"
        },
        {
          "url": "https://git.kernel.org/stable/c/49f2f9b1d0cc76cf221306fc707703205bd27073"
        },
        {
          "url": "https://git.kernel.org/stable/c/c5135bc34ea37e9d19f758e61ac44415afb3891a"
        },
        {
          "url": "https://git.kernel.org/stable/c/55864b26c22cbd4b2e0d36154a8c35931c2e133b"
        },
        {
          "url": "https://git.kernel.org/stable/c/b166bb79b7ef36b4f1d6d1f40d1a72b2eb0a56b9"
        },
        {
          "url": "https://git.kernel.org/stable/c/aaa66e60c0e21d19993a95bc3718dc29eb2d3192"
        },
        {
          "url": "https://git.kernel.org/stable/c/55516986a3d81325c84f2d4ae9cd03116bc63599"
        },
        {
          "url": "https://git.kernel.org/stable/c/8c3afcf27fa4582c1ab912503dc8a4ebb8dc0f82"
        }
      ],
      "title": "cpufreq: imx6q: fix out-of-bounds write when probed more than once",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90295",
    "datePublished": "2026-09-17T16:08:21.295Z",
    "dateReserved": "2026-09-11T19:38:34.799Z",
    "dateUpdated": "2026-10-19T09:01:13.419Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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