CVE-2022-48854 (GCVE-0-2022-48854)

Vulnerability from cvelistv5 – Published: 2024-07-16 12:25 – Updated: 2025-05-04 08:24
VLAI?
Title
net: arc_emac: Fix use after free in arc_mdio_probe()
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 95b5fc03c189e4ea5c63785274cc0b77fcc3a818 , < 84c831803785c2c3bec5c28c0e8a0b72f6b41d4d (git)
Affected: 95b5fc03c189e4ea5c63785274cc0b77fcc3a818 , < bc0e610a6eb0d46e4123fafdbe5e6141d9fff3be (git)
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    Linux Linux Affected: 5.16
Unaffected: 0 , < 5.16 (semver)
Unaffected: 5.16.15 , ≤ 5.16.* (semver)
Unaffected: 5.17 , ≤ * (original_commit_for_fix)
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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