CVE-2026-22978: Linux kernel · wifi: avoid kernel-infoleak from struct iw_point struct iw_point has a 32bit hole on
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 3.3 Low · fixed in 5.15.0-1103.110~20.04.1 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 17:16 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 5.15.0-1103.110~20.04.1, 5.15.0-1110.119~20.04.1, 5.15.0-1103.112~20.04.1 +68
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 23 Jan 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
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 25.10linuxpkg:deb/ubuntu/linux?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-oraclepkg:deb/ubuntu/linux-oracle?arch=source&distro=questingOther 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 patch is available and included in updated Linux kernel packages for Ubuntu 20.04 LTS and 22.04 LTS releases. Users should apply the official kernel updates and reboot their systems to ensure the fix is applied. Due to an ABI change, third-party kernel modules must be recompiled and reinstalled after updating. Follow vendor guidance for updating to the fixed kernel versions listed in the advisory. No additional mitigation is required beyond applying the official patch.
Description
A medium-severity information leak vulnerability (CVE-2026-22978) in the Linux kernel's wifi subsystem was resolved. The flaw involved a 32-bit hole in the struct iw_point on 64-bit architectures that could disclose kernel memory to user space if the structure was not properly zeroed. This vulnerability affects multiple Linux kernel versions prior to certain patched releases. The issue is part of a broader set of Linux kernel security fixes addressing various subsystems. A patch is available and should be applied to mitigate the risk.
References
- ubuntu.com/security/CVE-2026-22978 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-22978 (opens in a new tab)
- git.kernel.org/linus/21cbf883d073abbfe09e3924466aa5e0449e7261 (opens in a new tab)
- git.kernel.org/stable/c/024f71a57d563fbe162e528c8bf2d27e9cac7c7b (opens in a new tab)
- git.kernel.org/stable/c/21cbf883d073abbfe09e3924466aa5e0449e7261 (opens in a new tab)
- git.kernel.org/stable/c/442ceac0393185e9982323f6682a52a53e8462b1 (opens in a new tab)
- git.kernel.org/stable/c/a3827e310b5a73535646ef4a552d53b3c8bf74f6 (opens in a new tab)
- git.kernel.org/stable/c/d21ec867d84c9f3a9845d7d8c90c9ce35dbe48f8 (opens in a new tab)
- git.kernel.org/stable/c/d943b5f592767b107ba8c12a902f17431350378c (opens in a new tab)
- git.kernel.org/stable/c/e3c35177103ead4658b8a62f41e3080d45885464 (opens in a new tab)
- ubuntu.com/security/notices/USN-8096-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8096-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8096-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-8096-4 (opens in a new tab)
- ubuntu.com/security/notices/USN-8116-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8096-5 (opens in a new tab)
- ubuntu.com/security/notices/USN-8141-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8163-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8163-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8243-1 (opens in a new tab)