Vulnerability-Lookup

FKIE_CVE-2026-23408

Vulnerability from fkie_nvd - Published: 2026-04-01 09:16 - Updated: 2026-04-24 15:24

Severity ?

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: apparmor: Fix double free of ns_name in aa_replace_profiles() if ns_name is NULL after 1071 error = aa_unpack(udata, &lh, &ns_name); and if ent->ns_name contains an ns_name in 1089 } else if (ent->ns_name) { then ns_name is assigned the ent->ns_name 1095 ns_name = ent->ns_name; however ent->ns_name is freed at 1262 aa_load_ent_free(ent); and then again when freeing ns_name at 1270 kfree(ns_name); Fix this by NULLing out ent->ns_name after it is transferred to ns_name ")

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/18b5233e860c294a847ee07869d93c0b8673a54b	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/35f4caec1352054b9a61cfdf2bf1898073637aa0	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/55ef2af7490aaf72f8ffe11ec44c6bcb7eb2162a	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5df0c44e8f5f619d3beb871207aded7c78414502	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/7998ab3010d2317643f91828f1853d954ef31387	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/86feeccd6b93ed94bd6655f30de80f163f8d5a45	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c053ae381ce227577567d1ef10090ce7506d7a28	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c6347a2116ecccb8fd9ee4ebc75ae41d1d7ef689	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	5.5
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0

JSON

To clipboard

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CVE-2026-23408 (GCVE-0-2026-23408)

Vulnerability from cvelistv5 – Published: 2026-04-01 08:36 – Updated: 2026-04-18 08:58

Title

apparmor: Fix double free of ns_name in aa_replace_profiles()

Summary

Severity ?

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/c6347a2116ecccb8f…
	https://git.kernel.org/stable/c/c053ae381ce227577…
	https://git.kernel.org/stable/c/35f4caec1352054b9…
	https://git.kernel.org/stable/c/55ef2af7490aaf72f…
	https://git.kernel.org/stable/c/86feeccd6b93ed94b…
	https://git.kernel.org/stable/c/7998ab3010d231764…
	https://git.kernel.org/stable/c/18b5233e860c294a8…
	https://git.kernel.org/stable/c/5df0c44e8f5f619d3…

Impacted products

Vendor

Product

Version

Linux

Affected: 145a0ef21c8e944957f58e2c8ffcd8a10f46266a , < c6347a2116ecccb8fd9ee4ebc75ae41d1d7ef689 (git)
Affected: 145a0ef21c8e944957f58e2c8ffcd8a10f46266a , < c053ae381ce227577567d1ef10090ce7506d7a28 (git)
Affected: 145a0ef21c8e944957f58e2c8ffcd8a10f46266a , < 35f4caec1352054b9a61cfdf2bf1898073637aa0 (git)
Affected: 145a0ef21c8e944957f58e2c8ffcd8a10f46266a , < 55ef2af7490aaf72f8ffe11ec44c6bcb7eb2162a (git)
Affected: 145a0ef21c8e944957f58e2c8ffcd8a10f46266a , < 86feeccd6b93ed94bd6655f30de80f163f8d5a45 (git)
Affected: 145a0ef21c8e944957f58e2c8ffcd8a10f46266a , < 7998ab3010d2317643f91828f1853d954ef31387 (git)
Affected: 145a0ef21c8e944957f58e2c8ffcd8a10f46266a , < 18b5233e860c294a847ee07869d93c0b8673a54b (git)
Affected: 145a0ef21c8e944957f58e2c8ffcd8a10f46266a , < 5df0c44e8f5f619d3beb871207aded7c78414502 (git)

Linux

Affected: 5.5
Unaffected: 0 , < 5.5 (semver)
Unaffected: 5.10.253 , ≤ 5.10.* (semver)
Unaffected: 5.15.203 , ≤ 5.15.* (semver)
Unaffected: 6.1.169 , ≤ 6.1.* (semver)
Unaffected: 6.6.130 , ≤ 6.6.* (semver)
Unaffected: 6.12.77 , ≤ 6.12.* (semver)
Unaffected: 6.18.18 , ≤ 6.18.* (semver)
Unaffected: 6.19.8 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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        "dateUpdated": "2026-04-18T08:58:43.247Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c6347a2116ecccb8fd9ee4ebc75ae41d1d7ef689"
        },
        {
          "url": "https://git.kernel.org/stable/c/c053ae381ce227577567d1ef10090ce7506d7a28"
        },
        {
          "url": "https://git.kernel.org/stable/c/35f4caec1352054b9a61cfdf2bf1898073637aa0"
        },
        {
          "url": "https://git.kernel.org/stable/c/55ef2af7490aaf72f8ffe11ec44c6bcb7eb2162a"
        },
        {
          "url": "https://git.kernel.org/stable/c/86feeccd6b93ed94bd6655f30de80f163f8d5a45"
        },
        {
          "url": "https://git.kernel.org/stable/c/7998ab3010d2317643f91828f1853d954ef31387"
        },
        {
          "url": "https://git.kernel.org/stable/c/18b5233e860c294a847ee07869d93c0b8673a54b"
        },
        {
          "url": "https://git.kernel.org/stable/c/5df0c44e8f5f619d3beb871207aded7c78414502"
        }
      ],
      "title": "apparmor: Fix double free of ns_name in aa_replace_profiles()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23408",
    "datePublished": "2026-04-01T08:36:37.873Z",
    "dateReserved": "2026-01-13T15:37:46.013Z",
    "dateUpdated": "2026-04-18T08:58:43.247Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

FKIE_CVE-2026-23408

CVE-2026-23408 (GCVE-0-2026-23408)

Tags

Sightings

Nomenclature