CVE-2026-90080None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: fix NULL deref of af_xdp_zc_qidx on rep setup af_xdp_zc_qidx tracks receive queues using AF_XDP zero-copy and is allocated during PF/VF probe. Represento…
▾ 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 19.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.2%
0.2% → 0.2%
In the Linux kernel, the following vulnerability has been resolved:
octeontx2-pf: fix NULL deref of af_xdp_zc_qidx on rep setup
af_xdp_zc_qidx tracks receive queues using AF_XDP zero-copy and is allocated during PF/VF probe. Representors and other non-AF_XDP paths leave the pointer NULL, but several call sites used test_bit() on it unconditionally.
Switching to devlink eswitch mode creates representors and runs otx2_init_hw_resources(), which reaches otx2_pool_aq_init() and oopses when dereferencing the NULL bitmap. Add NULL checks before every af_xdp_zc_qidx test_bit() use in the RSS, ethtool, XSK, and pool init paths.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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