rnbd-srv: Zero the rsp buffer before using it

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Summary

CVECVE-2026-43184
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-06 12:16:37 UTC
Updated2026-05-11 20:56:19 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS: 0.000460000 probability, percentile 0.140500000 (date 2026-05-12)

Problem Types: NVD-CWE-noinfo

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 2de6c8de192b9341ffa5e84afe1ce6196d4eef41 e4272754063d52c9ad0169865add8816ba696471 git Not specified
CNA Linux Linux affected 2de6c8de192b9341ffa5e84afe1ce6196d4eef41 e2cacec7d4291300a282feb3af8eba57b93b15aa git Not specified
CNA Linux Linux affected 2de6c8de192b9341ffa5e84afe1ce6196d4eef41 b646e54d23b9b592d612a2036aab14e0f6c14206 git Not specified
CNA Linux Linux affected 2de6c8de192b9341ffa5e84afe1ce6196d4eef41 30868a6a5238849d554295aff3ce61d242d7fad8 git Not specified
CNA Linux Linux affected 2de6c8de192b9341ffa5e84afe1ce6196d4eef41 7aac0a30dcf41cdb510526740d9a2ab1520c5d98 git Not specified
CNA Linux Linux affected 2de6c8de192b9341ffa5e84afe1ce6196d4eef41 c94ede3c436dfbd9cedd9cb69f604f6fc901b6a2 git Not specified
CNA Linux Linux affected 2de6c8de192b9341ffa5e84afe1ce6196d4eef41 852475278ca5e96e0c0275950e1a84203e602b33 git Not specified
CNA Linux Linux affected 2de6c8de192b9341ffa5e84afe1ce6196d4eef41 69d26698e4fd44935510553809007151b2fe4db5 git Not specified
CNA Linux Linux affected 5.8 Not specified
CNA Linux Linux unaffected 5.8 semver Not specified
CNA Linux Linux unaffected 5.10.252 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.202 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.165 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.128 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.75 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.16 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.6 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/e2cacec7d4291300a282feb3af8eba57b93b15aa 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/c94ede3c436dfbd9cedd9cb69f604f6fc901b6a2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/e4272754063d52c9ad0169865add8816ba696471 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/852475278ca5e96e0c0275950e1a84203e602b33 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/7aac0a30dcf41cdb510526740d9a2ab1520c5d98 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/b646e54d23b9b592d612a2036aab14e0f6c14206 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/30868a6a5238849d554295aff3ce61d242d7fad8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/69d26698e4fd44935510553809007151b2fe4db5 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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