CVE-2026-53160 (GCVE-0-2026-53160)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:38 – Updated: 2026-06-28 06:39
VLAI
Title
misc: fastrpc: fix use-after-free race in fastrpc_map_create
Summary
In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: fix use-after-free race in fastrpc_map_create fastrpc_map_lookup returns a raw pointer after releasing fl->lock. The caller fastrpc_map_create then calls fastrpc_map_get (kref_get_unless_zero) on this unprotected pointer. A concurrent MEM_UNMAP can free the map between the lock release and the kref operation, resulting in a use-after-free on the freed slab object. Restore the take_ref parameter to fastrpc_map_lookup so the reference is acquired atomically under fl->lock before the pointer is exposed to the caller.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0b70ec82b309a4093106ff399da1911ad23b52d3 , < 0a3b87293fbd34fda651e6aead9964f84b893962 (git)
Affected: d7513b47082c08105e837b06cebeb3f07a5fa56f , < 8b080c89183196fd3e49212f2a1a1c4a29335b9c (git)
Affected: 802359a52676176b18713e33caa17572ad009057 , < 5b0166112019d1dce30b976ab28fd67f7f0be532 (git)
Affected: 10df039834f84a297c72ec962c0f9b7c8c5ca31a , < 992f121796b7ca83a5a8b93da24e971363206218 (git)
Affected: 10df039834f84a297c72ec962c0f9b7c8c5ca31a , < f20f6512ecb75c816e0debf4551a138f098615c4 (git)
Affected: 10df039834f84a297c72ec962c0f9b7c8c5ca31a , < 07ebe87915d8accdaba20c4f88c5ae430fe62fbb (git)
Affected: f3f59bab68e9bc714f757ab22f3fb36153014043 (git)
Affected: 6.1.156 , < 6.1.176 (semver)
Affected: 6.6.112 , < 6.6.143 (semver)
Affected: 6.12.53 , < 6.12.94 (semver)
Affected: 6.17.3 , < 6.18 (semver)
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Linux Linux Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 6.1.176 , ≤ 6.1.* (semver)
Unaffected: 6.6.143 , ≤ 6.6.* (semver)
Unaffected: 6.12.94 , ≤ 6.12.* (semver)
Unaffected: 6.18.36 , ≤ 6.18.* (semver)
Unaffected: 7.0.13 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • 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.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.