CVE-2026-31645 (GCVE-0-2026-31645)

Vulnerability from cvelistv5 – Published: 2026-04-24 14:44 – Updated: 2026-04-24 14:44
VLAI?
Title
net: lan966x: fix page pool leak in error paths
Summary
In the Linux kernel, the following vulnerability has been resolved: net: lan966x: fix page pool leak in error paths lan966x_fdma_rx_alloc() creates a page pool but does not destroy it if the subsequent fdma_alloc_coherent() call fails, leaking the pool. Similarly, lan966x_fdma_init() frees the coherent DMA memory when lan966x_fdma_tx_alloc() fails but does not destroy the page pool that was successfully created by lan966x_fdma_rx_alloc(), leaking it. Add the missing page_pool_destroy() calls in both error paths.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 11871aba19748b3387e83a2db6360aa7119e9a1a , < 73e940c4249dc5ec6422d1fae535d192fb125955 (git)
Affected: 11871aba19748b3387e83a2db6360aa7119e9a1a , < 22e1ee9f22b5c3bb702bb6d4167d770002a85b2b (git)
Affected: 11871aba19748b3387e83a2db6360aa7119e9a1a , < 4941e234cfd67ac911fb259642b453f9f76aac41 (git)
Affected: 11871aba19748b3387e83a2db6360aa7119e9a1a , < 076344a6ad9d1308faaed1402fdcfdda68b604ab (git)
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    Linux Linux Affected: 6.2
Unaffected: 0 , < 6.2 (semver)
Unaffected: 6.12.82 , ≤ 6.12.* (semver)
Unaffected: 6.18.23 , ≤ 6.18.* (semver)
Unaffected: 6.19.13 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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            "drivers/net/ethernet/microchip/lan966x/lan966x_fdma.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: lan966x: fix page pool leak in error paths\n\nlan966x_fdma_rx_alloc() creates a page pool but does not destroy it if\nthe subsequent fdma_alloc_coherent() call fails, leaking the pool.\n\nSimilarly, lan966x_fdma_init() frees the coherent DMA memory when\nlan966x_fdma_tx_alloc() fails but does not destroy the page pool that\nwas successfully created by lan966x_fdma_rx_alloc(), leaking it.\n\nAdd the missing page_pool_destroy() calls in both error paths."
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    "dateReserved": "2026-03-09T15:48:24.127Z",
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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