8.4
High
CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Vulnerability
Active exploitation observed
· CISA KEV catalogue
Required action
Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.
Ransomware campaigns
Not observed so far
Weakness
CWE-190
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| kernel | 8.4 | No fix stated |
| linux_kernel | 8.4 | No fix stated |
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