CVE-2026-97954: Linux kernel · net/rds: fix tcp stream corruption with large pages
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 17:16 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 25 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix has been implemented in the Linux kernel to address this issue by correctly limiting the scatterlist mapping size. Users should apply the updated kernel versions that include this fix. There is no indication that additional mitigation steps are required beyond applying the patch.
Description
A vulnerability in the Linux kernel's RDS TCP implementation caused TCP stream corruption on systems with large page sizes. The issue arises because rds_message_map_pages() assigns PAGE_SIZE bytes to each scatterlist entry even when the total length ends in a partial page, leading to bytes beyond the congestion map being transmitted and corrupting the RDS stream. This was fixed by limiting the final scatterlist mapping to the remaining bytes, allowing RDS-TCP to function correctly on systems with page sizes larger than 8 KB.
References
- ubuntu.com/security/CVE-2026-97954 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-97954 (opens in a new tab)
- git.kernel.org/stable/c/ef3565a418b8309589fe9b5df098a892c9146b06 (opens in a new tab)
- git.kernel.org/stable/c/f4649a716be20ef9272f97a166dea1825ba5b554 (opens in a new tab)
- git.kernel.org/stable/c/2ac09b5353fe6858411fdc8c6efa60d832e20f13 (opens in a new tab)
- git.kernel.org/stable/c/8cbfeb54bf781d9693778aaba133bb58c0285332 (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-97954 (opens in a new tab)
- git.kernel.org/stable/c/3230961a72b312d0e47101d1428084d0a02bff52 (opens in a new tab)
- git.kernel.org/stable/c/348492de88bc6ea06b6f3dd544a7a00d908a807b (opens in a new tab)
- git.kernel.org/stable/c/7d7705ce73eac1de1146706d887bc969a48ebb6d (opens in a new tab)
- git.kernel.org/stable/c/ee74a4b42e3a2f9635ba376be9e58311322eebe4 (opens in a new tab)