AZL-90860
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-90860.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-90860
- Upstream
- Published
- 2026-06-25T09:16:40Z
- Modified
- 2026-08-28T17:48:11Z
- Summary
- CVE-2026-53227 affecting package kernel for versions less than 6.6.143.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
net: openvswitch: fix possible kfree_skb of ERR_PTR
After the patch in the "Fixes" tag, the allocation of the "reply" skb can happen either before or after locking the ovs_mutex.
However, error cleanups still follow the classical reversed order, assuming "reply" is allocated before locking: it is freed after unlocking.
If "reply" allocation happens after locking the mutex and it fails, "reply" is left with an ERR_PTR, and execution jumps to the correspondent cleanup stage which will try to free an invalid pointer.
Fix this by setting the pointer to NULL after having saved its error value.
- References