CVE-2026-45848 (GCVE-0-2026-45848)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:15 – Updated: 2026-05-27 12:15
VLAI
Title
apparmor: fix NULL sock in aa_sock_file_perm
Summary
In the Linux kernel, the following vulnerability has been resolved: apparmor: fix NULL sock in aa_sock_file_perm Deal with the potential that sock and sock-sk can be NULL during socket setup or teardown. This could lead to an oops. The fix for NULL pointer dereference in __unix_needs_revalidation shows this is at least possible for af_unix sockets. While the fix for af_unix sockets applies for newer mediation this is still the fall back path for older af_unix mediation and other sockets, so ensure it is covered.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 56974a6fcfef69ee0825bd66ed13e92070ac5224 , < 68538ec34fcb4194c7961dc4eca6f5537fec8067 (git)
Affected: 56974a6fcfef69ee0825bd66ed13e92070ac5224 , < 5121b7283f1c46e4c06b88b1dda7b064429d77de (git)
Affected: 56974a6fcfef69ee0825bd66ed13e92070ac5224 , < c11b7c3280d000376e27ebfed17ec7046699eab4 (git)
Affected: 56974a6fcfef69ee0825bd66ed13e92070ac5224 , < 0dc19bca22606f7a61d5988408f74e3ae0ef3486 (git)
Affected: 56974a6fcfef69ee0825bd66ed13e92070ac5224 , < 3852eb9a0392eb435c03dcb47d581bcfe6a9a95b (git)
Affected: 56974a6fcfef69ee0825bd66ed13e92070ac5224 , < ccb66a3c6c8f51b3ed1bc003b70bb9ff99e8d835 (git)
Affected: 56974a6fcfef69ee0825bd66ed13e92070ac5224 , < 8a0ededbfcff74598f82f1d4b8ef9db28878b317 (git)
Affected: 56974a6fcfef69ee0825bd66ed13e92070ac5224 , < 00b67657535dfea56e84d11492f5c0f61d0af297 (git)
Create a notification for this product.
Linux Linux Affected: 4.17
Unaffected: 0 , < 4.17 (semver)
Unaffected: 5.10.252 , ≤ 5.10.* (semver)
Unaffected: 5.15.202 , ≤ 5.15.* (semver)
Unaffected: 6.1.165 , ≤ 6.1.* (semver)
Unaffected: 6.6.128 , ≤ 6.6.* (semver)
Unaffected: 6.12.75 , ≤ 6.12.* (semver)
Unaffected: 6.18.14 , ≤ 6.18.* (semver)
Unaffected: 6.19.4 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: fix NULL sock in aa_sock_file_perm\n\nDeal with the potential that sock and sock-sk can be NULL during\nsocket setup or teardown. This could lead to an oops. The fix for NULL\npointer dereference in __unix_needs_revalidation shows this is at\nleast possible for af_unix sockets. While the fix for af_unix sockets\napplies for newer mediation this is still the fall back path for older\naf_unix mediation and other sockets, so ensure it is covered."
        }
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "dateReserved": "2026-05-13T15:03:33.078Z",
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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.

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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.


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