CVE-2026-35376
| Summary |
A Time-of-Check to Time-of-Use (TOCTOU) vulnerability exists in the chcon utility of uutils coreutils during recursive operations. The implementation resolves recursive targets using a fresh path lookup (via fts_accpath) rather than binding the traversal and label application to the specific directory state encountered during traversal. Because these operations are not anchored to file descriptors, a local attacker with write access to a directory tree can exploit timing-sensitive rename or symbolic link races to redirect a privileged recursive relabeling operation to unintended files or directories. This vulnerability breaks the hardening expectations for SELinux administration workflows and can lead to the unauthorized modification of security labels on sensitive system objects.
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| Publication Date |
April 23, 2026, 2:16 a.m. |
| Registration Date |
April 25, 2026, 4:05 a.m. |
| Last Update |
April 23, 2026, 6:23 a.m. |
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CVSS3.1 : MEDIUM
|
| スコア |
4.5
|
| Vector |
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L |
| 攻撃元区分(AV) |
ローカル |
| 攻撃条件の複雑さ(AC) |
高 |
| 攻撃に必要な特権レベル(PR) |
低 |
| 利用者の関与(UI) |
不要 |
| 影響の想定範囲(S) |
変更なし |
| 機密性への影響(C) |
低 |
| 完全性への影響(I) |
低 |
| 可用性への影響(A) |
低 |
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