pinctrl: spacemit: fix NULL check in spacemit_pin_set_config

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-80648
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-28 08:16:49 UTC
Updated2026-08-28 08:16:49 UTC
DescriptionIn 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.

Risk And Classification

EPSS: 0.001660000 probability, percentile 0.060840000 (date 2026-08-30)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected a83c29e1d145cca5240952100acd1cd60f25fb5f 7a551951ebeb5b3f05bdb04a73d4593869c984c4 git Not specified
CNA Linux Linux affected a83c29e1d145cca5240952100acd1cd60f25fb5f d3b53f0eda26e442ff97016ad4a0724db8fd3781 git Not specified
CNA Linux Linux affected a83c29e1d145cca5240952100acd1cd60f25fb5f 09c816e5c4d3a8d6d6e4b7537433e5e98505d934 git Not specified
CNA Linux Linux affected 6.13 Not specified
CNA Linux Linux unaffected 6.13 semver Not specified
CNA Linux Linux unaffected 6.18.40 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.5 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/d3b53f0eda26e442ff97016ad4a0724db8fd3781 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/09c816e5c4d3a8d6d6e4b7537433e5e98505d934 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/7a551951ebeb5b3f05bdb04a73d4593869c984c4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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