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

Vulnerability from cvelistv5 – Published: 2024-07-16 12:25 – Updated: 2026-05-11 18:48
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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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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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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