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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No Fix Known
No patch has been released yet. Apply workarounds or mitigations where available.
| Vendor | Product | Versions | Fixed In |
|---|---|---|---|
| linux | linux_kernel | 5.1 - 5.4.173 | - |
| linux | linux_kernel | 5.5 - 5.10.93 | - |
| linux | linux_kernel | 5.11 - 5.15.16 |
Published
CVE disclosed publicly
Last Modified
Most recent update
Indexed to CVEInsight
Added to this platform
AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
12
Affected Products
11
References
linux / linux_kernel
| - |
| linux | linux_kernel | 5.16 - 5.16.2 | - |
| netapp | h410c_firmware | - | - |
| netapp | h300s_firmware | - | - |
| netapp | h500s_firmware | - | - |
| netapp | h700s_firmware | - | - |
| netapp | h300e_firmware | - | - |
| netapp | h500e_firmware | - | - |
| netapp | h700e_firmware | - | - |
| netapp | h410s_firmware | - | - |
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability
Impact