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CVE PROGRAM SOURCE RECORDUnscored

CVE-2022-48854

net: arc_emac: Fix use after free in arc_mdio_probe()

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: net: arc_emac: Fix use after free in arc_mdio_probe() If bus->state is equal to MDIOBUS_ALLOCATED, mdiobus_free(bus) will free the "bus". But bus->name is still used in the next line, which will lead to a use after free. We can fix it by putting the name in a local variable and make the bus->name point to the rodata section "name",then use the name in the error message without referring to bus to avoid the uaf.

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

  • 95b5fc03c189e4ea5c63785274cc0b77fcc3a818 to < 84c831803785c2c3bec5c28c0e8a0b72f6b41d4daffected
  • 95b5fc03c189e4ea5c63785274cc0b77fcc3a818 to < bc0e610a6eb0d46e4123fafdbe5e6141d9fff3beaffected

Linux Linux

Default version status: affected

  • 5.16affected
  • 0 to < 5.16unaffected
  • 5.16.15 to ≤ 5.16.*unaffected
  • 5.17 to ≤ *unaffected

References