CVE-2026-90085

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinuxb907194a5d5bcd3b01d28d095f6a4d9fcd9c5354 < fb736d733b0a60377cf53010571c261886446fd5affected
LinuxLinuxb907194a5d5bcd3b01d28d095f6a4d9fcd9c5354 < 537e11a1700f64dc6754108f0e1333ad63d4f548affected
LinuxLinuxb907194a5d5bcd3b01d28d095f6a4d9fcd9c5354 < fdf7358e2688f12eff41290bc45030b7aff0845eaffected
LinuxLinuxb907194a5d5bcd3b01d28d095f6a4d9fcd9c5354 < ec65631bd5ec251cdf67a4919fac7a3149a6e235affected
LinuxLinux6.11affected
LinuxLinux0 < 6.11unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References