CVE-2026-45995 (GCVE-0-2026-45995)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:55 – Updated: 2026-05-27 12:55
VLAI
Title
io_uring/zcrx: fix user_struct uaf
Summary
In the Linux kernel, the following vulnerability has been resolved: io_uring/zcrx: fix user_struct uaf io_free_rbuf_ring() usees a struct user_struct, which io_zcrx_ifq_free() puts it down before destroying the ring.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 5c686456a4e83ef06c74d40be05c21a0ef136684 , < 9feb88eeda6d288f93fcfb6bca563f89e316479d (git)
Affected: 5c686456a4e83ef06c74d40be05c21a0ef136684 , < 0fcccfd87152f957fa8312b841f6efef42a05a20 (git)
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Linux Linux Affected: 6.19
Unaffected: 0 , < 6.19 (semver)
Unaffected: 7.0.4 , ≤ 7.0.* (semver)
Unaffected: 7.1-rc1 , ≤ * (original_commit_for_fix)
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    "dateReserved": "2026-05-13T15:03:33.091Z",
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    "state": "PUBLISHED"
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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.