FKIE_CVE-2026-80648

Vulnerability from fkie_nvd - Published: 2026-08-28 08:16 - Updated: 2026-08-28 08:16
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: pinctrl: spacemit: fix NULL check in spacemit_pin_set_config spacemit_pin_set_config() looks up the per-pin descriptor with spacemit_get_pin() then checks the wrong variable for failure: const struct spacemit_pin *spin = spacemit_get_pin(pctrl, pin); ... if (!pin) return -EINVAL; reg = spacemit_pin_to_reg(pctrl, spin->pin); pin is an unsigned int pin id, where 0 (GPIO_0 / gmac0_rxdv on K3) is a valid pin, so rejecting it here drops the PAD config write for the first pin of every group. On K3 Pico-ITX the GMAC RGMII group lists pin 0 as its first entry, so its drive-strength / bias configuration was silently ignored. The intended guard is against spacemit_get_pin() returning NULL when the pin id isn't in the SoC's pin table. Check spin instead, which both restores PAD setup for pin 0 and prevents a NULL deref on spin->pin.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/09c816e5c4d3a8d6d6e4b7537433e5e98505d934
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7a551951ebeb5b3f05bdb04a73d4593869c984c4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d3b53f0eda26e442ff97016ad4a0724db8fd3781
Impacted products
Vendor Product Version
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{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/pinctrl/spacemit/pinctrl-k1.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7a551951ebeb5b3f05bdb04a73d4593869c984c4",
              "status": "affected",
              "version": "a83c29e1d145cca5240952100acd1cd60f25fb5f",
              "versionType": "git"
            },
            {
              "lessThan": "d3b53f0eda26e442ff97016ad4a0724db8fd3781",
              "status": "affected",
              "version": "a83c29e1d145cca5240952100acd1cd60f25fb5f",
              "versionType": "git"
            },
            {
              "lessThan": "09c816e5c4d3a8d6d6e4b7537433e5e98505d934",
              "status": "affected",
              "version": "a83c29e1d145cca5240952100acd1cd60f25fb5f",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/pinctrl/spacemit/pinctrl-k1.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npinctrl: spacemit: fix NULL check in spacemit_pin_set_config\n\nspacemit_pin_set_config() looks up the per-pin descriptor with\nspacemit_get_pin() then checks the wrong variable for failure:\n\n\tconst struct spacemit_pin *spin = spacemit_get_pin(pctrl, pin);\n\t...\n\tif (!pin)\n\t\treturn -EINVAL;\n\n\treg = spacemit_pin_to_reg(pctrl, spin-\u003epin);\n\npin is an unsigned int pin id, where 0 (GPIO_0 / gmac0_rxdv on K3) is a\nvalid pin, so rejecting it here drops the PAD config write for the first\npin of every group. On K3 Pico-ITX the GMAC RGMII group lists pin 0 as\nits first entry, so its drive-strength / bias configuration was silently\nignored.\n\nThe intended guard is against spacemit_get_pin() returning NULL when the\npin id isn\u0027t in the SoC\u0027s pin table. Check spin instead, which both\nrestores PAD setup for pin 0 and prevents a NULL deref on spin-\u003epin."
    }
  ],
  "id": "CVE-2026-80648",
  "lastModified": "2026-08-28T08:16:49.800",
  "metrics": {},
  "published": "2026-08-28T08:16:49.800",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/09c816e5c4d3a8d6d6e4b7537433e5e98505d934"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7a551951ebeb5b3f05bdb04a73d4593869c984c4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d3b53f0eda26e442ff97016ad4a0724db8fd3781"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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