CVE-2021-47614: RDMA/irdma: Fix a user-after-free in add_pble_prm

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-06-19 · updated 2026-08-04
Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/irdma: Fix a user-after-free in add_pble_prm When irdma_hmc_sd_one fails, 'chunk' is freed while its still on the PBLE info list. Add the chunk entry to the PBLE info list only after successful setting of the SD in irdma_hmc_sd_one.

Affected products

Linux kernel: from 5.14 before 5.15.10 — fixed in 5.15.10

How to fix

Upgrade to a fixed version: Linux kernel 5.15.10. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/11eebcf63e98fcf047a876a51d76afdabc3b8b9b
https://git.kernel.org/stable/c/1e11a39a82e95ce86f849f40dda0d9c0498cebd9
https://git.kernel.org/stable/c/11eebcf63e98fcf047a876a51d76afdabc3b8b9b
https://git.kernel.org/stable/c/1e11a39a82e95ce86f849f40dda0d9c0498cebd9

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