CVE-2026-43157 PUBLISHED

octeontx2-af: CGX: fix bitmap leaks

Assigner: Linux
Reserved: 01.05.2026 Published: 06.05.2026 Updated: 06.05.2026

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

octeontx2-af: CGX: fix bitmap leaks

The RX/TX flow-control bitmaps (rx_fc_pfvf_bmap and tx_fc_pfvf_bmap) are allocated by cgx_lmac_init() but never freed in cgx_lmac_exit(). Unbinding and rebinding the driver therefore triggers kmemleak:

<pre>unreferenced object (size 16): backtrace: rvu_alloc_bitmap cgx_probe </pre>

Free both bitmaps during teardown.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from e740003874edc13e468d19233f99787bedb4bb8e to ad8a13a45c5c24d0d32de9a1c3fd58498a675ece (excl.)
  • affected from e740003874edc13e468d19233f99787bedb4bb8e to 013ac469596a0b8671e62d89c89ae0bd46bbe667 (excl.)
  • affected from e740003874edc13e468d19233f99787bedb4bb8e to ccef79af58b43787c25710c9da96651c6ddfe50f (excl.)
  • affected from e740003874edc13e468d19233f99787bedb4bb8e to 6d389382ee655128056fbdab86baad8495ffbf33 (excl.)
  • affected from e740003874edc13e468d19233f99787bedb4bb8e to ccca14bbdcc25829d355b9f4d3249f43dadb71c1 (excl.)
  • affected from e740003874edc13e468d19233f99787bedb4bb8e to 3def995c4ede842adf509c410e92d09a0cedc965 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 5.18 is affected
  • unaffected from 0 to 5.18 (excl.)
  • unaffected from 6.1.165 to 6.1.* (incl.)
  • unaffected from 6.6.128 to 6.6.* (incl.)
  • unaffected from 6.12.75 to 6.12.* (incl.)
  • unaffected from 6.18.16 to 6.18.* (incl.)
  • unaffected from 6.19.6 to 6.19.* (incl.)
  • unaffected from 7.0 to * (incl.)

References