CVE-2022-49622
HIGH
MEDIUM
Priority: 0.02
BB Relevance:
41/100
Published: 2025-02-26
Modified: 2026-10-30
First seen: 2026-10-30
Status: active
Attack Surface
Low Complexity
No Interaction
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
High
I:
High
A:
High
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: avoid skb access on nf_stolen When verdict is NF_STOLEN, the skb might have been freed. When tracing is enabled, this can result in a use-after-free: 1. access to skb->nf_trace 2. access to skb->mark 3. computation of trace id 4. dump of packet payload To avoid 1, keep a cached copy of skb->nf_trace in the trace state struct. Refresh this copy whenever verdict is != STOLEN. Avoid 2 by skipping skb->mark access if verdict is STOLEN. 3 is avoided by precomputing the trace id. Only dump the packet when verdict is not "STOLEN".
Weakness Classification (1)
Affected Software (10)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | 5efa0fc6d7f7930b18801f07cefae8eeacd6ac02 < 348218a4601e93de4d1e9fab29837cf656e4bf99 |
| Linux | Linux | 5efa0fc6d7f7930b18801f07cefae8eeacd6ac02 < 453a67af8bd77463b33cb0336dd7f2341e332d29 |
| Linux | Linux | 5efa0fc6d7f7930b18801f07cefae8eeacd6ac02 < 0016d5d46d7440729a3132f61a8da3bf7f84e2ba |
| Linux | Linux | 5efa0fc6d7f7930b18801f07cefae8eeacd6ac02 < e34b9ed96ce3b06c79bf884009b16961ca478f87 |
| Linux | Linux | 4.10 |
| linux | linux_kernel | < 5.18.13 |
| linux | linux_kernel | 5.19 |
| linux | linux_kernel | 5.19 |
| linux | linux_kernel | 5.19 |
| linux | linux_kernel | 5.19 |