CVE-2022-50007
Last modified
CVE-2022-50007 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: xfrm: fix refcount leak in __xfrm_policy_check() The issue happens on an error path in __xfrm_policy_check(). When the fetching process of the object `pols[1]` fails, the function simply returns 0, forgetting to decrement the reference count of `pols[0]`, which is incremented earlier by either xfrm_sk_policy_lookup() or xfrm_policy_lookup(). EPSS estimates a 0.21% chance of exploitation in the next 30 days.
Description
In the Linux kernel, the following vulnerability has been resolved: xfrm: fix refcount leak in __xfrm_policy_check() The issue happens on an error path in __xfrm_policy_check(). When the fetching process of the object `pols[1]` fails, the function simply returns 0, forgetting to decrement the reference count of `pols[0]`, which is incremented earlier by either xfrm_sk_policy_lookup() or xfrm_policy_lookup(). This may result in memory leaks. Fix it by decreasing the reference count of `pols[0]` in that path.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | >= 2.6.20, < 4.9.327 | — |
| Linux | Linux Kernel | >= 4.10, < 4.14.292 | — |
| Linux | Linux Kernel | >= 4.15, < 4.19.257 | — |
| Linux | Linux Kernel | >= 4.20, < 5.4.212 | — |
| Linux | Linux Kernel | >= 5.5, < 5.10.140 | — |
| Linux | Linux Kernel | >= 5.11, < 5.15.64 | — |
| Linux | Linux Kernel | >= 5.16, < 5.19.6 | — |
| Linux | Linux Kernel | 2.6.19 | — |
| Linux | Linux Kernel | 6.0 | Rc1 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
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