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CVE-2026-90085

octeontx2-af: fix NULL deref in NIX TM tree debugfs read path PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: fix NULL deref in NIX TM tree debugfs read path rvu_dbg_nix_tm_tree_display() dereferences pfvf->sq_ctx without checking whether the SQ context has been allocated. Reading /sys/kernel/debug/octeontx2/nix/tm_tree for a NIX LF whose transmit queues are not set up triggers a kernel oops. Guard the read path the same way rvu_dbg_nix_tm_tree_write() already does and return -EINVAL with a seq_file message when sq_ctx is NULL.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected b907194a5d5bcd3b01d28d095f6a4d9fcd9c5354 before fb736d733b0a60377cf53010571c261886446fd5; affected b907194a5d5bcd3b01d28d095f6a4d9fcd9c5354 before 537e11a1700f64dc6754108f0e1333ad63d4f548; affected b907194a5d5bcd3b01d28d095f6a4d9fcd9c5354 before fdf7358e2688f12eff41290bc45030b7aff0845e; affected b907194a5d5bcd3b01d28d095f6a4d9fcd9c5354 before ec65631bd5ec251cdf67a4919fac7a3149a6e235
Linux / Linuxaffected 6.11; unaffected 0 before 6.11; unaffected 6.12.110 through 6.12.*; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through *

CWE

No CWE identifiers supplied.

References