CVE-2026-80756

selinux: do not cancel a policy conversion that never started

State: Published
Severity: Not scored
Published: Sep 3, 2026
Updated: Sep 3, 2026
Reserved: Aug 26, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

selinux: do not cancel a policy conversion that never started

sel_write_load() calls selinux_policy_cancel() when sel_make_policy_nodes() fails, and that helper dereferences the outgoing policy to cancel its sidtab conversion. On the first policy load there is no outgoing policy: security_load_policy() returns early for that case, before it converts anything, and state->policy is still NULL. A first load that fails while building the selinuxfs tree therefore takes a NULL dereference in selinux_policy_cancel(), reached from a write(2) to /sys/fs/selinux/load.

Skip the cancel when there is no old policy, mirroring the check security_load_policy() already makes before it converts.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 to before 2d29983104f06f5b0babcd5a25a0f0408272cd27Affected 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 to before a4f182f8715cb0819445f0850cd5436828f4bafcAffected 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 to before 1059789ae9f99cbbe3a78e361e9c0976beb5958bAffected 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 to before 1acc317d67a755a45e32419a15d70e403fa43f0eAffected 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 to before a42932c6aa33d0aac683cacdf1ec7009b955ba5dAffected 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 to before 1b4ff94ae7c580c880291519fb0e3e2bd075beefAffected 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 to before 219c96de5d9b6b4af7e8576ad897b774cc3ee9a7Affected 02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 to before e5c0235a3c4e9eb047a16cd02323fe4ecf2f570eAffected
LinuxLinux	5.10Affected before 5.10Not affected 5.10.266 through 5.10.Not affected 5.15.217 through 5.15.Not affected 6.1.184 through 6.1.Not affected 6.6.153 through 6.6.Not affected 6.12.105 through 6.12.Not affected 6.18.46 through 6.18.Not affected 7.1.10 through 7.1.*Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 to before 2d29983104f06f5b0babcd5a25a0f0408272cd27Affected
02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 to before a4f182f8715cb0819445f0850cd5436828f4bafcAffected
02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 to before 1059789ae9f99cbbe3a78e361e9c0976beb5958bAffected
02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 to before 1acc317d67a755a45e32419a15d70e403fa43f0eAffected
02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 to before a42932c6aa33d0aac683cacdf1ec7009b955ba5dAffected
02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 to before 1b4ff94ae7c580c880291519fb0e3e2bd075beefAffected
02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 to before 219c96de5d9b6b4af7e8576ad897b774cc3ee9a7Affected
02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 to before e5c0235a3c4e9eb047a16cd02323fe4ecf2f570eAffected

LinuxLinux

5.10Affected
before 5.10Not affected
5.10.266 through 5.10.*Not affected
5.15.217 through 5.15.*Not affected
6.1.184 through 6.1.*Not affected
6.6.153 through 6.6.*Not affected
6.12.105 through 6.12.*Not affected
6.18.46 through 6.18.*Not affected
7.1.10 through 7.1.*Not affected
7.2 and laterNot affected

References

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