Bug 2324331 (CVE-2024-50157) - CVE-2024-50157 kernel: RDMA/bnxt_re: Avoid CPU lockups due fifo occupancy check loop
Summary: CVE-2024-50157 kernel: RDMA/bnxt_re: Avoid CPU lockups due fifo occupancy che...
Keywords:
Status: NEW
Alias: CVE-2024-50157
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2324388
Blocks:
TreeView+ depends on / blocked
 
Reported: 2024-11-07 10:02 UTC by OSIDB Bzimport
Modified: 2024-11-07 16:39 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2024-11-07 10:02:21 UTC
In the Linux kernel, the following vulnerability has been resolved:

RDMA/bnxt_re: Avoid CPU lockups due fifo occupancy check loop

Driver waits indefinitely for the fifo occupancy to go below a threshold
as soon as the pacing interrupt is received. This can cause soft lockup on
one of the processors, if the rate of DB is very high.

Add a loop count for FPGA and exit the __wait_for_fifo_occupancy_below_th
if the loop is taking more time. Pacing will be continuing until the
occupancy is below the threshold. This is ensured by the checks in
bnxt_re_pacing_timer_exp and further scheduling the work for pacing based
on the fifo occupancy.


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