Description
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.
Details
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| :linux-kernel: | :0 | :2022-06-05 |
| h300e-firmware | — | — |
| h300s-firmware | — | — |
| h410c-firmware | — | — |
| h410s-firmware | — | — |
| h500e-firmware | — | — |
| h500s-firmware | — | — |
| h700e-firmware | — | — |
| h700s-firmware | — | — |
| linux-kernel | 5.16 | 5.16.2 |
References
Similar Threats
- Unknown CVE-2020-29374
- Unknown CVE-2020-0465
- Unknown CVE-2018-25020
- Unknown CVE-2020-27068
- Unknown CVE-2021-0707
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