AZL-97100
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-97100.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-97100
- Upstream
- Published
- 2026-08-22T16:16:44Z
- Modified
- 2026-08-31T05:26:27Z
- Summary
- CVE-2026-74695 affecting package kernel 6.6.150.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nfflowtable: drop existing skb dst before skbdstset_noref()
Incoming skbs passing through netfilter flowtable offload hooks (or XFRM offload path) might already carry a ref-counted dst_entry assigned during earlier RX or routing steps.
Calling skbdstsetnoref() when skb already holds a ref-counted dst overwrites skb->skbrefdst, leaking the previous dstentry reference count and triggering a DEBUGNETWARNONONCE assertion in skbdstcheck_unset():
WARNING: at skbdstcheckunset include/linux/skbuff.h:1170 WARNING: at skbdstsetnoref include/linux/skbuff.h:1234 WARNING: at nfflowoffloadiphook+0xf6c/0x2b60 net/netfilter/nfflowtable_ip.c:864
Drop any existing dstentry reference with skbdst_drop(skb) before setting the non-referenced flowtable destination.
- References