CVE-2026-23335 PUBLISHED

RDMA/irdma: Fix kernel stack leak in irdma_create_user_ah()

Assigner: Linux
Reserved: 13.01.2026 Published: 25.03.2026 Updated: 25.03.2026

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

RDMA/irdma: Fix kernel stack leak in irdma_create_user_ah()

struct irdma_create_ah_resp { // 8 bytes, no padding __u32 ah_id; // offset 0 - SET (uresp.ah_id = ah->sc_ah.ah_info.ah_idx) __u8 rsvd[4]; // offset 4 - NEVER SET <- LEAK };

rsvd[4]: 4 bytes of stack memory leaked unconditionally. Only ah_id is assigned before ib_respond_udata().

The reserved members of the structure were not zeroed.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from b48c24c2d710cf34810c555dcef883a3d35a9c08 to 14b47c07c69930254f549a17ee245c80a65b1609 (excl.)
  • affected from b48c24c2d710cf34810c555dcef883a3d35a9c08 to 1b1fac4c7a3ab7f52e9cfb91e5c91216646ca4d8 (excl.)
  • affected from b48c24c2d710cf34810c555dcef883a3d35a9c08 to 2fd37450d271d74b3847baed284f9cfdf198c6f8 (excl.)
  • affected from b48c24c2d710cf34810c555dcef883a3d35a9c08 to cfe962216c164fe2b1c1fb6ac925a7413f5abc84 (excl.)
  • affected from b48c24c2d710cf34810c555dcef883a3d35a9c08 to c9bd0007c4bdb7806bbd323287e50f9cf467c51a (excl.)
  • affected from b48c24c2d710cf34810c555dcef883a3d35a9c08 to 74586c6da9ea222a61c98394f2fc0a604748438c (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 5.14 is affected
  • unaffected from 0 to 5.14 (excl.)
  • unaffected from 6.1.167 to 6.1.* (incl.)
  • unaffected from 6.6.130 to 6.6.* (incl.)
  • unaffected from 6.12.77 to 6.12.* (incl.)
  • unaffected from 6.18.17 to 6.18.* (incl.)
  • unaffected from 6.19.7 to 6.19.* (incl.)
  • unaffected from 7.0-rc2 to * (incl.)

References