6.3

CVE-2024-38544

RDMA/rxe: Fix seg fault in rxe_comp_queue_pkt

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 4.12 < 5.4.285
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.227
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.168
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.93
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.33
Linux ≫ Linux Kernel Version >= 6.7 < 6.8.12
Linux ≫ Linux Kernel Version >= 6.9 < 6.9.3
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.25% 0.16
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 6.3 1 5.2
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
134c704f-9b21-4f2e-91b3-4a467353bcc0 6.3 1 5.2
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://git.kernel.org/stable/c/21b4c6d4d89030fd4657a8e7c8110fd941049794
Patch
https://git.kernel.org/stable/c/2b23b6097303ed0ba5f4bc036a1c07b6027af5c6
Patch
https://git.kernel.org/stable/c/30df4bef8b8e183333e9b6e9d4509d552c7da6eb
Patch
https://git.kernel.org/stable/c/bbad88f111a1829f366c189aa48e7e58e57553fc
Patch
https://git.kernel.org/stable/c/c91fb72a2ca6480d8d77262eef52dc5b178463a3
Patch
https://git.kernel.org/stable/c/de5a059e36657442b5637cc16df5163e435b9cb4
Patch
https://git.kernel.org/stable/c/e0e14dd35d4242340c7346aac60c7ff8fbf87ffc
Patch
https://git.kernel.org/stable/c/faa8d0ecf6c9c7c2ace3ca3e552180ada6f75e19
Patch
https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html