Riskcovery

CVE-2026-97571

bnxt_en: Propagate TPA buffer allocation failures in bnxt_queue_mem_alloc()

State
Published
Severity
Not scored
Published
Sep 25, 2026
Updated
Oct 19, 2026
Reserved
Sep 24, 2026

Read the record on cve.org

Description

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

bnxt_en: Propagate TPA buffer allocation failures in bnxt_queue_mem_alloc()

bnxt_alloc_one_tpa_info_data() returns -ENOMEM as soon as one allocation fails. This leaves the remaining rxr->rx_tpa[] entries zeroed.

bnxt_queue_mem_alloc() discards that return value, so the partially initialized ring is installed by bnxt_queue_start().

Since the agg_id is picked by the hardware and bnxt_alloc_agg_idx maps it to a SW index in rxr->rx_tpa[], it is possible that an uninitialized slot can be chosen which would hand a zero DMA address to the device.

Fix this by checking the return value of bnxt_alloc_one_tpa_info_data and unwinding, freeing the ring buffers.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 0997443906b96a051011f220a61e6dce4602ec54 to before d7db2e4953e4626339fd0075564a3e447650d37bAffected
  • bd649c5cc958169b8a8a3e77ea926d92d472b02a to before c8050386a2209b2a474c1eb4bd1574dc19129bfbAffected
  • bd649c5cc958169b8a8a3e77ea926d92d472b02a to before 37e08dc821a57fe0592c917486b638caa888b46dAffected
  • bd649c5cc958169b8a8a3e77ea926d92d472b02a to before b814dfbfeb0a68c9a52073f2caa05a2d5247a329Affected
  • 6.12.20 to before 6.12.112Affected
LinuxLinux
  • 6.13Affected
  • before 6.13Not affected
  • 6.12.112 through 6.12.*Not affected
  • 6.18.53 through 6.18.*Not affected
  • 7.2.7 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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