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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-63972

net: mana: Skip redundant detach on already-detached port

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: net: mana: Skip redundant detach on already-detached port When mana_per_port_queue_reset_work_handler() runs after a previous detach succeeded but attach failed, the port is left in a detached state with apc->tx_qp and apc->rxqs already freed. Calling mana_detach() again unconditionally leads to NULL pointer dereferences during queue teardown. Add an early exit in mana_detach() when the port is already in detached state (!netif_device_present) for non-close callers, making it safe to call idempotently. This allows the queue reset handler and other recovery paths to simply retry mana_attach() without redundant teardown.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • fb9f98e1041a30dd5766620a2a64cb472b54caa9 to < c4152b4e28b3e550ec99351bf900e2c24c2608ccaffected
  • 3b194343c25084a8d2fa0c0f2c9e80f3080fd732 to < 7ae590797f9b5c240aaea5773f5f00977a42a846affected
  • 3b194343c25084a8d2fa0c0f2c9e80f3080fd732 to < 5b05aa36ee24297d7296ca58dfd8c448d0e4cda3affected
  • 6.18.33 to < 6.18.35affected

Linux Linux

Default version status: affected

  • 7.0affected
  • 0 to < 7.0unaffected
  • 6.18.35 to ≤ 6.18.*unaffected
  • 7.0.12 to ≤ 7.0.*unaffected
  • 7.1 to ≤ *unaffected

References