Description
In the Linux kernel, the following vulnerability has been resolved: apparmor: check label build before no_new_privs test aa_change_profile() builds a replacement label with fn_label_build_in_scope() before the no_new_privs subset check. The build helper can fail and return NULL or an ERR_PTR, but the result was passed to aa_label_is_unconfined_subset() before the existing IS_ERR_OR_NULL() check. Reuse the existing target-label build failure handling immediately after the build. This preserves the current audit handling while preventing the subset helper from dereferencing an invalid label.
References8
- git.kernel.org/stable/c/31cb109db5e6322ed22304fd5c0dedbaa438d6d3
- git.kernel.org/stable/c/a29f06db44b4c94597ded58f639eed3e21781ac3
- git.kernel.org/stable/c/a58cafd38b46fb1a2220e2fbbcfe291ea75fa147
- git.kernel.org/stable/c/b7c45c05a396a017c49ac7949de240a0dfc0ac4e
- git.kernel.org/stable/c/cfc224866530a6842b6c2d2d30ef6a9b0e64bb9c
- git.kernel.org/stable/c/d82160132345688a09cbaa648cfdd16bb32e8ea2
- git.kernel.org/stable/c/d84bb195d208adbf77f012ca2a96e11163f6def1
- git.kernel.org/stable/c/ec926b2a351eeeb31e6c9aee02e0c32f94b5588f
Metrics
- CVSS 3.1
-
7.1
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H - EPSS — exploit probability
- 0% percentile: 2 · as of 11 November 2026
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