net: macb: destroy the phylink instance on the probe error path

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Summary

CVECVE-2026-97973
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-25 11:17:25 UTC
Updated2026-10-03 11:18:21 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: net: macb: destroy the phylink instance on the probe error path macb_mii_init() creates a phylink instance on both of its success paths, but the probe unwind frees the netdev without destroying it, so a failing macb_alloc_tieoff() or register_netdev() leaks the instance. Destroy it at err_out_unregister_mdio, which is only reachable once macb_mii_init() has succeeded, so bp->phylink is valid there.

Risk And Classification

EPSS: 0.001680000 probability, percentile 0.054020000 (date 2026-09-27)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0 0112aa02c7847314be599d68783d50c7e228a694 git Not specified
CNA Linux Linux affected 7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0 c1de1e7b51ab2531f564b39b51998c3d71caccd7 git Not specified
CNA Linux Linux affected 7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0 23b6a44ffea1c54a4232aa86ee470b21422a8cc5 git Not specified
CNA Linux Linux affected 7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0 e92a45b872b035c79acde8dd0da096a72b61ff2f git Not specified
CNA Linux Linux affected 7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0 8558e3195664113c14a4d8fcf221b3caff41fed1 git Not specified
CNA Linux Linux affected 7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0 7d059f390750152b9bd69df934198651b94fc26d git Not specified
CNA Linux Linux affected 5.5 Not specified
CNA Linux Linux unaffected 5.5 semver Not specified
CNA Linux Linux unaffected 6.1.189 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.158 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.111 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.53 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.7 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/7d059f390750152b9bd69df934198651b94fc26d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e92a45b872b035c79acde8dd0da096a72b61ff2f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/23b6a44ffea1c54a4232aa86ee470b21422a8cc5 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/c1de1e7b51ab2531f564b39b51998c3d71caccd7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0112aa02c7847314be599d68783d50c7e228a694 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8558e3195664113c14a4d8fcf221b3caff41fed1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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