CVE-2024-38544
MEDIUMLinux Kernel 4.12-6.9.3 - Use-After-Free in rxe_comp_queue_pkt
Title source: llmDescription
In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix seg fault in rxe_comp_queue_pkt In rxe_comp_queue_pkt() an incoming response packet skb is enqueued to the resp_pkts queue and then a decision is made whether to run the completer task inline or schedule it. Finally the skb is dereferenced to bump a 'hw' performance counter. This is wrong because if the completer task is already running in a separate thread it may have already processed the skb and freed it which can cause a seg fault. This has been observed infrequently in testing at high scale. This patch fixes this by changing the order of enqueuing the packet until after the counter is accessed.
References (9)
Core 9
Core References
Scores
CVSS v3
6.3
EPSS
0.0025
EPSS Percentile
16.3%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-416
Status
published
Products (26)
linux/Kernel
4.12.0 - 5.4.285linux
linux/Kernel
5.11.0 - 5.15.168linux
linux/Kernel
5.16.0 - 6.1.93linux
linux/Kernel
5.5.0 - 5.10.227linux
linux/Kernel
6.2.0 - 6.6.33linux
linux/Kernel
6.7.0 - 6.8.12linux
linux/Kernel
6.9.0 - 6.9.3linux
Linux/Linux
< 4.12
Linux/Linux
0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 - 21b4c6d4d89030fd4657a8e7c8110fd941049794
Linux/Linux
0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 - 2b23b6097303ed0ba5f4bc036a1c07b6027af5c6
... and 16 more
Published
Jun 19, 2024
Tracked Since
Feb 18, 2026