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

Vulnerability from cvelistv5 – Published: 2026-04-01 08:36 – Updated: 2026-04-02 14:44
VLAI?
Title
apparmor: Fix double free of ns_name in aa_replace_profiles()
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 ")
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: 145a0ef21c8e944957f58e2c8ffcd8a10f46266a , < 55ef2af7490aaf72f8ffe11ec44c6bcb7eb2162a (git)
Affected: 145a0ef21c8e944957f58e2c8ffcd8a10f46266a , < 86feeccd6b93ed94bd6655f30de80f163f8d5a45 (git)
Affected: 145a0ef21c8e944957f58e2c8ffcd8a10f46266a , < 7998ab3010d2317643f91828f1853d954ef31387 (git)
Affected: 145a0ef21c8e944957f58e2c8ffcd8a10f46266a , < 18b5233e860c294a847ee07869d93c0b8673a54b (git)
Affected: 145a0ef21c8e944957f58e2c8ffcd8a10f46266a , < 5df0c44e8f5f619d3beb871207aded7c78414502 (git)
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    Linux Linux Affected: 5.5
Unaffected: 0 , < 5.5 (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-rc4 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: Fix double free of ns_name in aa_replace_profiles()\n\nif ns_name is NULL after\n1071         error = aa_unpack(udata, \u0026lh, \u0026ns_name);\n\nand if ent-\u003ens_name contains an ns_name in\n1089                 } else if (ent-\u003ens_name) {\n\nthen ns_name is assigned the ent-\u003ens_name\n1095                         ns_name = ent-\u003ens_name;\n\nhowever ent-\u003ens_name is freed at\n1262                 aa_load_ent_free(ent);\n\nand then again when freeing ns_name at\n1270         kfree(ns_name);\n\nFix this by NULLing out ent-\u003ens_name after it is transferred to ns_name\n\n\")"
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    "dateReserved": "2026-01-13T15:37:46.013Z",
    "dateUpdated": "2026-04-02T14:44:37.549Z",
    "state": "PUBLISHED"
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}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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