CVE-2024-50157

Description

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.

CVSS Metrics

• v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.02%• Percentile: 4%

Affected Systems

• linux•linux

  ≥ 2ad4e6303a6d7518632739eaf67821a3553db1bd, < 7998e7efd1d557af118ac96f48ebc569b929b555 | ≥ 2ad4e6303a6d7518632739eaf67821a3553db1bd, < 2fb6b2e82413e401b72dfeacd7a60416fcfc5b41 | ≥ 2ad4e6303a6d7518632739eaf67821a3553db1bd, < 8be3e5b0c96beeefe9d5486b96575d104d3e7d17 | 6.6

• linux•linux_kernel

  ≥ 6.6, < 6.11.6 | 6.12:rc1 | 6.12:rc2 | 6.12:rc3

References (3)

• https://git.kernel.org/stable/c/7998e7efd1d557af118ac96f48ebc569b929b555
• https://git.kernel.org/stable/c/2fb6b2e82413e401b72dfeacd7a60416fcfc5b41
• https://git.kernel.org/stable/c/8be3e5b0c96beeefe9d5486b96575d104d3e7d17