What’s Vulnerable › Vulnerabilities

CVE-2026-43184: rnbd-srv: Zero the rsp buffer before using it

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-06 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: rnbd-srv: Zero the rsp buffer before using it Before using the data buffer to send back the response message, zero it completely. This prevents any stray bytes to be picked up by the client side when there the message is exchanged between different protocol versions.

Affected products

• Linux kernel: from 5.8 before 5.10.252; from 5.11 before 5.15.202; from 5.16 before 6.1.165; from 6.2 before 6.6.128; from 6.7 before 6.12.75; from 6.13 before 6.18.16 — fixed in 5.10.252, 5.15.202, 6.1.165, 6.12.75, 6.18.16, 6.19.6

How to fix

Upgrade to a fixed version: Linux kernel 5.10.252, 5.15.202, 6.1.165, 6.12.75. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/30868a6a5238849d554295aff3ce61d242d7fad8
• https://git.kernel.org/stable/c/69d26698e4fd44935510553809007151b2fe4db5
• https://git.kernel.org/stable/c/7aac0a30dcf41cdb510526740d9a2ab1520c5d98
• https://git.kernel.org/stable/c/852475278ca5e96e0c0275950e1a84203e602b33
• https://git.kernel.org/stable/c/b646e54d23b9b592d612a2036aab14e0f6c14206
• https://git.kernel.org/stable/c/c94ede3c436dfbd9cedd9cb69f604f6fc901b6a2
• https://git.kernel.org/stable/c/e2cacec7d4291300a282feb3af8eba57b93b15aa
• https://git.kernel.org/stable/c/e4272754063d52c9ad0169865add8816ba696471

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