cve-2022-48854
Vulnerability from cvelistv5
Published
2024-07-16 12:25
Modified
2024-12-19 08:09
Severity ?
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/84c831803785c2c3bec5c28c0e8a0b72f6b41d4dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bc0e610a6eb0d46e4123fafdbe5e6141d9fff3bePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/84c831803785c2c3bec5c28c0e8a0b72f6b41d4dPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/bc0e610a6eb0d46e4123fafdbe5e6141d9fff3bePatch
Impacted products
Vendor Product Version
Linux Linux Version: 95b5fc03c189e4ea5c63785274cc0b77fcc3a818
Version: 95b5fc03c189e4ea5c63785274cc0b77fcc3a818
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   Linux Linux Version: 5.16
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