7.5

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

Analyzed
AliasesUBUNTU-CVE-2026-43184DEBIAN-CVE-2026-43184
Published 06-05-2026Last modified 05-08-2026

Vulnerability summary

CVE-2026-43184 is a high (CVSS 7.5) vulnerability in linux. EPSS estimates a 0.44% chance of exploitation in the next 30 days, higher than 38.6% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 0% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.44%
0%100%
Low · -0.13 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 32 · Related 32
OPENSUSE-SU-2026:20965-1SUSE-SU-2026:22099-1SUSE-SU-2026:22112-1SUSE-SU-2026:22117-1SUSE-SU-2026:22127-1SUSE-SU-2026:4935-1

Timeline

  1. 06-05-2026
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.44%

Chance of exploitation in the next 30 days

Percentile

39%

Versus all other CVEs

30-day change

Decrease -0.13 pp

From 0.58% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu157 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-134.134
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1060.63
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 2de6c8de192b9341ffa5e84afe1ce6196d4eef41, < e4272754063d52c9ad0169865add8816ba696471 | ≥ 2de6c8de192b9341ffa5e84afe1ce6196d4eef41, < e2cacec7d4291300a282feb3af8eba57b93b15aa | ≥ 2de6c8de192b9341ffa5e84afe1ce6196d4eef41, < b646e54d23b9b592d612a2036aab14e0f6c14206 | ≥ 2de6c8de192b9341ffa5e84afe1ce6196d4eef41, < 30868a6a5238849d554295aff3ce61d242d7fad8 | ≥ 2de6c8de192b9341ffa5e84afe1ce6196d4eef41, < 7aac0a30dcf41cdb510526740d9a2ab1520c5d98 | ≥ 2de6c8de192b9341ffa5e84afe1ce6196d4eef41, < c94ede3c436dfbd9cedd9cb69f604f6fc901b6a2 | ≥ 2de6c8de192b9341ffa5e84afe1ce6196d4eef41, < 852475278ca5e96e0c0275950e1a84203e602b33 | ≥ 2de6c8de192b9341ffa5e84afe1ce6196d4eef41, < 69d26698e4fd44935510553809007151b2fe4db5 | 5.8
  • linux_kernel≥ 5.8, < 5.10.252 | ≥ 5.11, < 5.15.202 | ≥ 5.16, < 6.1.165 | ≥ 6.2, < 6.6.128 | ≥ 6.7, < 6.12.75 | ≥ 6.13, < 6.18.16 | ≥ 6.19, < 6.19.6
Debian1 product
  • linux< 6.1.170-1 | < 6.12.85-1 | < 6.19.6-1

3 vendors · 160 products

References

37 links
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