A heap-based buffer overflow flaw was found in the way the legacy_parse_param function in the Filesystem Context functionality of the Linux kernel verified the supplied parameters length. An unprivileged (in case of unprivileged user namespaces enabled, otherwise needs namespaced CAP_SYS_ADMIN privilege) local user able to open a filesystem that does not support the Filesystem Context API (and thus fallbacks to legacy handling) could use this flaw to escalate their privileges on the system.
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History
Wed, 22 Oct 2025 00:30:00 +0000
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Tue, 21 Oct 2025 20:30:00 +0000
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Tue, 21 Oct 2025 19:30:00 +0000
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Wed, 30 Jul 2025 02:15:00 +0000
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Wed, 16 Jul 2025 13:45:00 +0000
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Sun, 13 Jul 2025 13:45:00 +0000
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Thu, 22 Aug 2024 06:15:00 +0000
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Status: PUBLISHED
Assigner: redhat
Published: 2022-02-11T17:40:57.000Z
Updated: 2025-10-21T23:15:46.536Z
Reserved: 2022-01-11T00:00:00.000Z
Link: CVE-2022-0185
Updated: 2024-08-02T23:18:42.536Z
Status : Modified
Published: 2022-02-11T18:15:10.890
Modified: 2025-10-22T00:17:51.120
Link: CVE-2022-0185