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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
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
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)
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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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      "current_release_date": "2026-06-28T07:39:43+00:00",
      "cve": "CVE-2026-45848",
      "id": "CVE-2026-45848",
      "initial_release_date": "2026-05-27T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: apparmor: fix NULL sock in aa_sock_file_perm",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45848.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-11T01:14:54Z",
      "cve": "CVE-2026-45848",
      "id": "CVE-2026-45848",
      "initial_release_date": "2026-05-28T03:57:34Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "578",
      "product_status:known_not_affected": "125",
      "product_status:recommended": "277",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-45848",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-45848.json",
      "version": "16"
    }
  }
}



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Tags
Taxonomy of the tags.





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

Author Source Type Date Other

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.