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VulnerabilityPublished Updated

CVE-2026-93107: Linux kernel · RDMA/rxe: Avoid reprocessing the current packet after the QP enters the error state

Affects Linux kernelSource CVE Database V5

0

Not known to be exploited · CVSS 8.2 High · fixed in c319b986a88cedf600c4497cd7814a891b2f9e7c : patch Linux kernel soon.

Data as of 26 Oct 2026, 13:47 UTC

CVSS 3.1 base score
8.2High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 45% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in c319b986a88cedf600c4497cd7814a891b2f9e7c, 399713f1f0eac641351c8ceaec0ab8244ddcf78c, 62a4b48767e06fdd64548450fae2b1ffc6ff5d69 +2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 17 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 49dc9c1f0c7e396654a31a480328fffd902fa494, < c319b986a88cedf600c4497cd7814a891b2f9e7c
Fixed in
  • c319b986a88cedf600c4497cd7814a891b2f9e7c
LinuxLinuxAffected
  • ≥ 49dc9c1f0c7e396654a31a480328fffd902fa494, < 399713f1f0eac641351c8ceaec0ab8244ddcf78c
Fixed in
  • 399713f1f0eac641351c8ceaec0ab8244ddcf78c
LinuxLinuxAffected
  • ≥ 49dc9c1f0c7e396654a31a480328fffd902fa494, < 62a4b48767e06fdd64548450fae2b1ffc6ff5d69
Fixed in
  • 62a4b48767e06fdd64548450fae2b1ffc6ff5d69
LinuxLinuxAffected
  • ≥ 49dc9c1f0c7e396654a31a480328fffd902fa494, < 15ae32c4a3551c4c9da457370bdfdd65d171e512
Fixed in
  • 15ae32c4a3551c4c9da457370bdfdd65d171e512
LinuxLinuxAffected
  • ≥ 49dc9c1f0c7e396654a31a480328fffd902fa494, < 0d37e2503efd1069a74be740eadf63ea17c96810
Fixed in
  • 0d37e2503efd1069a74be740eadf63ea17c96810
LinuxLinuxAffected
  • =6.4
Fixed in–

AI-suggested

A fix for this vulnerability is available and included in Linux kernel version 6.4. Users and administrators should upgrade to this version or later to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.

Description

CVE-2026-93107 is a high-severity vulnerability in the Linux kernel's RDMA/rxe subsystem. It involves improper handling of packets when a Queue Pair (QP) enters an error state, causing the same packet to be reprocessed multiple times. This leads to duplicate completions indistinguishable from legitimate receives, resulting in data stream corruption for user-level protocols relying on exactly-once delivery. The flaw can cause a kernel NULL pointer dereference and system instability. A fix has been implemented in Linux kernel version 6.4.

References

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