CVE-2026-90080: Linux

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: efabce29015189cb5cd8066cf29eb1d754de6c3c преди b003d5b4e46ca5033859db601e12d36da24d0e40; efabce29015189cb5cd8066cf29eb1d754de6c3c преди 7e33c6bd049b532d2ec4916895ef07e538bed905; efabce29015189cb5cd8066cf29eb1d754de6c3c преди b09a0503c755b6609fad59a84cc7f05b6843a03c; 9bd7273cf1f9c5761d696cca821d25602e8f7009; 6.14.9 преди 6.15
• Linux Linux: 6.15; преди 6.15; 6.18.52 до 6.18.*; 7.2.6 до 7.2.*; от 7.3 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-90080
• https://nvd.nist.gov/vuln/detail/CVE-2026-90080
• https://git.kernel.org/stable/c/b003d5b4e46ca5033859db601e12d36da24d0e40
• https://git.kernel.org/stable/c/7e33c6bd049b532d2ec4916895ef07e538bed905
• https://git.kernel.org/stable/c/b09a0503c755b6609fad59a84cc7f05b6843a03c