CVE-2026-90080octeontx2-pf: fix NULL deref of af_xdp_zc_qidx on rep setup
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from efabce29015189cb5cd8066cf29eb1d754de6c3c before b003d5b4e46ca5033859db601e12d36da24d0e40; from efabce29015189cb5cd8066cf29eb1d754de6c3c before 7e33c6bd049b532d2ec4916895ef07e538bed905; from efabce29015189cb5cd8066cf29eb1d754de6c3c before b09a0503c755b6609fad59a84cc7f05b6843a03c; 9bd7273cf1f9c5761d696cca821d25602e8f7009; from 6.14.9 before 6.15 | CNA record |
References
- https://git.kernel.org/stable/c/b003d5b4e46ca5033859db601e12d36da24d0e40
- https://git.kernel.org/stable/c/7e33c6bd049b532d2ec4916895ef07e538bed905
- https://git.kernel.org/stable/c/b09a0503c755b6609fad59a84cc7f05b6843a03c
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.