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CVE-2024-50130— netfilter: bpf: must hold reference on net namespace

EPSS 0.04% · P11
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I. Basic Information for CVE-2024-50130

Vulnerability Information
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Vulnerability Title
netfilter: bpf: must hold reference on net namespace
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于netfilter: bpf模块在__nf_unregister_net_hook函数中未能正确持有网络命名空间引用，可能导致释放后重用问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 84601d6ee68ae820dec97450934797046d62db4b ~ f41bd93b3e0508edc7ba820357f949071dcc0acc -
LinuxLinux 6.4 -

II. Public POCs for CVE-2024-50130

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III. Intelligence Information for CVE-2024-50130

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Same Patch Batch · Linux · 2024-11-05 · 50 CVEs total

CVE-2024-50124Bluetooth: ISO: Fix UAF on iso_sock_timeout
CVE-2024-50129net: pse-pd: Fix out of bound for loop
CVE-2024-50134drm/vboxvideo: Replace fake VLA at end of vbva_mouse_pointer_shape with real VLA
CVE-2024-50136net/mlx5: Unregister notifier on eswitch init failure
CVE-2024-50135nvme-pci: fix race condition between reset and nvme_dev_disable()
CVE-2024-50137reset: starfive: jh71x0: Fix accessing the empty member on JH7110 SoC
CVE-2024-50138bpf: Use raw_spinlock_t in ringbuf
CVE-2024-50132tracing/probes: Fix MAX_TRACE_ARGS limit handling
CVE-2024-50125Bluetooth: SCO: Fix UAF on sco_sock_timeout
CVE-2024-50123bpf: Add the missing BPF_LINK_TYPE invocation for sockmap
CVE-2024-50127net: sched: fix use-after-free in taprio_change()
CVE-2024-50121nfsd: cancel nfsd_shrinker_work using sync mode in nfs4_state_shutdown_net
CVE-2024-50122PCI: Hold rescan lock while adding devices during host probe
CVE-2024-50120smb: client: Handle kstrdup failures for passwords
CVE-2024-50119cifs: fix warning when destroy 'cifs_io_request_pool'
CVE-2024-50118btrfs: reject ro->rw reconfiguration if there are hard ro requirements
CVE-2024-50117drm/amd: Guard against bad data for ATIF ACPI method
CVE-2024-50116nilfs2: fix kernel bug due to missing clearing of buffer delay flag
CVE-2024-50115KVM: nSVM: Ignore nCR3[4:0] when loading PDPTEs from memory
CVE-2024-50114KVM: arm64: Unregister redistributor for failed vCPU creation

Showing top 20 of 50 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-50130

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