CVE-2026-22994None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: bpf: Fix reference count leak in bpf_prog_test_run_xdp() syzbot is reporting unregister_netdevice: waiting for sit0 to become free. Usage count = 2 problem. A debu…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
0.1% → 0.1%
In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix reference count leak in bpf_prog_test_run_xdp()
syzbot is reporting
unregister_netdevice: waiting for sit0 to become free. Usage count = 2
problem. A debug printk() patch found that a refcount is obtained at xdp_convert_md_to_buff() from bpf_prog_test_run_xdp().
According to commit ec94670fcb3b ("bpf: Support specifying ingress via xdp_md context in BPF_PROG_TEST_RUN"), the refcount obtained by xdp_convert_md_to_buff() will be released by xdp_convert_buff_to_md().
Therefore, we can consider that the error handling path introduced by commit 1c1949982524 ("bpf: introduce frags support to bpf_prog_test_run_xdp()") forgot to call xdp_convert_buff_to_md().
Linux >= 1c194998252469cad00a08bd9ef0b99fd255c260 < 368569bc546d3368ee9980ba79fc42fdff9a3365Linux >= 1c194998252469cad00a08bd9ef0b99fd255c260 < 98676ee71fd4eafeb8be63c7f3f1905d40e03101Linux >= 1c194998252469cad00a08bd9ef0b99fd255c260 < fb9ef40cccdbacce36029b305d0ef1e12e4fea38Linux >= 1c194998252469cad00a08bd9ef0b99fd255c260 < 737be05a765761d7d7c9f7fe92274bd8e6f6951eLinux >= 1c194998252469cad00a08bd9ef0b99fd255c260 < ec69daabe45256f98ac86c651b8ad1b2574489a7Linux 5.18Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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