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CVE-2025-38730VulnerabilityPublished Updated

CVE-2025-38730: Linux hwe edge · In the Linux kernel, the following vulnerability has been resolved: io_uring/net: commit partial buffers on retry Ring provided buffers are

Affects linux-hwe-edgeSource GCVE Database

0

Mentioned vulnerabilities

Not known to be exploited · CVSS 7.8 High · fixed in 6.8.0-1051.57~22.04.1 : patch linux-hwe-edge soon.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 3.1 base score
7.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 6.8.0-1051.57~22.04.1, 6.8.0-1047.50~22.04.2, 6.8.0-1046.49~22.04.1 +2
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 4 Sep 2025

  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
linux-hwe-edgeAffected
  • Red Hat
  • Red Hat Enterprise Linux
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • Red Hat Enterprise Linux BaseOS EUS (v. 10.0)
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)
  • <6.8.0-1046.49~22.04.1
  • <6.8.0-1051.57~22.04.1
  • <6.8.0-1047.50~22.04.2
  • <6.8.0-100.100~22.04.1
  • <6.8.0-1044.44~22.04.1
Fixed in
  • 6.8.0-1046.49~22.04.1
  • 6.8.0-1051.57~22.04.1
  • 6.8.0-1047.50~22.04.2
  • 6.8.0-100.100~22.04.1
  • 6.8.0-1044.44~22.04.1

AI-suggested

Red Hat has released updated kernel packages that address these vulnerabilities. Users of Red Hat Enterprise Linux 10.0 Extended Update Support and related products should apply the provided kernel updates and reboot their systems to ensure the fixes take effect. Refer to Red Hat's official update article (https://access.redhat.com/articles/11258) for detailed instructions. No other mitigation actions are indicated by the vendor advisory.

Description

In the Linux kernel, the following vulnerability has been resolved: io_uring/net: commit partial buffers on retry Ring provided buffers are potentially only valid within the single execution context in which they were acquired. io_uring deals with this and invalidates them on retry. But on the networking side, if MSG_WAITALL is set, or if the socket is of the streaming type and too little was processed, then it will hang on to the buffer rather than recycle or commit it. This is problematic for two reasons: 1) If someone unregisters the provided buffer ring before a later retry, then the req->buf_list will no longer be valid. 2) If multiple sockers are using the same buffer group, then multiple receives can consume the same memory. This can cause data corruption in the application, as either receive could land in the same userspace buffer. Fix this by disallowing partial retries from pinning a provided buffer across multiple executions, if ring provided buffers are used.

References

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