CVE-2026-23384

In the Linux kernel, the following vulnerability has been resolved:

RDMA/ionic: Fix kernel stack leak in ionic_create_cq()

struct ionic_cq_resp resp {
__u32 cqid[2]; // offset 0 – PARTIALLY SET (see below)
__u8 udma_mask; // offset 8 – SET (resp.udma_mask = vcq->udma_mask)
__u8 rsvd[7]; // offset 9 – NEVER SET <- LEAK }; rsvd[7]: 7 bytes of stack memory leaked unconditionally. cqid[2]: The loop at line 1256 iterates over udma_idx but skips indices where !(vcq->udma_mask & BIT(udma_idx)). The array has 2 entries but
udma_count could be 1, meaning cqid[1] might never be written via
ionic_create_cq_common(). If udma_mask only has bit 0 set, cqid[1] (4
bytes) is also leaked. So potentially 11 bytes leaked.

More information : https://git.kernel.org/stable/c/547d0b07ad73915b323bc21f85c5d3252bebbbcf