Answer in brief
CVE-2024-50130 records a High severity (CVSS 7.8) vulnerability in netfilter: bpf: must hold reference on net namespace. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=84601d6ee68ae820dec97450934797046d62db4b <f41bd93b3e0508edc7ba820357f949071dcc0acc || >=84601d6ee68ae820dec97450934797046d62db4b <d0d7939543a1b3bb93af9a18d258a774daf8f162 || >=84601d6ee68ae820dec97450934797046d62db4b <1230fe7ad3974f7bf6c78901473e039b34d4fb1f | f41bd93b3e0508edc7ba820357f949071dcc0acc, d0d7939543a1b3bb93af9a18d258a774daf8f162, 1230fe7ad3974f7bf6c78901473e039b34d4fb1f |
| Linux/Linuxgeneric | 6.4 | Not reported |
Published upstream
Nov 5, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: netfilter: bpf: must hold reference on net namespace BUG: KASAN: slab-use-after-free in __nf_unregister_net_hook+0x640/0x6b0 Read of size 8 at addr ffff8880106fe400 by task repro/72= bpf_nf_link_release+0xda/0x1e0 bpf_link_free+0x139/0x2d0 bpf_link_release+0x68/0x80 __fput+0x414/0xb60 Eric says: It seems that bpf was able to defer the __nf_unregister_net_hook() after exit()/close() time. Perhaps a netns reference is missing, because the netns has been dismantled/freed already. bpf_nf_link_attach() does : link->net = net; But I do not see a reference being taken on net. Add such a reference and release it after hook unreg. Note that I was unable to get syzbot reproducer to work, so I do not know if this resolves this splat.
Quoted source text, attributed separately from HOL analysis.