CVE-2025-38095high

CVE-2025-38095: high-severity vulnerability in Linux

dma-buf: insert memory barrier before updating num_fences

Published · Updated

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.8epss 0.2%
exploitation probability
0.2%top 90% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved: dma-buf: insert memory barrier before updating num_fences smp_store_mb() inserts memory barrier after storing operation. It is different with what the comment is originally aiming so Null pointer dereference can be happened if memory update is reordered.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · Linux
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References
https://git.kernel.org/stable/c/08680c4dadc6e736c75bc2409d833f03f9003c51https://git.kernel.org/stable/c/3becc659f9cb76b481ad1fb71f54d5c8d6332d3fhttps://git.kernel.org/stable/c/72c7d62583ebce7baeb61acce6057c361f73be4ahttps://git.kernel.org/stable/c/90eb79c4ed98a4e24a62ccf61c199ab0f680fa8fhttps://git.kernel.org/stable/c/c9d2b9a80d06a58f37e0dc8c827075639b443927https://git.kernel.org/stable/c/d0b7f11dd68b593bd970e5735be00e8d89bace30https://git.kernel.org/stable/c/fe1bebd0edb22e3536cbc920ec713331d1367ad4https://lists.debian.org/debian-lts-announce/2025/08/msg00010.htmlhttps://lists.debian.org/debian-lts-announce/2025/10/msg00007.html