CVE-2026-72433: Linux kernel · netfilter: nft_meta_bridge: fix NFT_META_BRI_IIFPVID stack leak
Affects Linux kernelSource GCVE Database
Not known to be exploited · fixed in 5.15.0-1117.124~20.04.1 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 13:47 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 5.15.0-1117.124~20.04.1, 5.15.0-1123.132~20.04.1, 5.15.0-1122.131~20.04.1 +41
Exploitation evidence
Disclosed: evidence found.
CVE published 15 Aug 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 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
An official patch is available and should be applied to affected systems. The vendor advisory from Ubuntu confirms that the issue has been fixed in updated linux-hwe-edge kernel packages. Users should update to the fixed versions to remediate this vulnerability.
Description
A stack leak vulnerability in the Linux kernel's netfilter nft_meta_bridge component (NFT_META_BRI_IIFPVID) has been resolved. This issue involved improper handling of a return value leading to a stack leak. The vulnerability affects specific versions of the linux-hwe-edge kernel. A patch is available to address this issue.
References
- nvd.nist.gov/vuln/detail/CVE-2026-72433 (opens in a new tab)
- git.kernel.org/stable/c/27dd2997746d54ebc079bb13161cc1bdd401d4a6 (opens in a new tab)
- git.kernel.org/stable/c/4dce8bf588a89bef99b446136d15685a837e7acf (opens in a new tab)
- git.kernel.org/stable/c/7e23965d44f06ed93fb5362fb1e321b769eecc3b (opens in a new tab)
- git.kernel.org/stable/c/92c9682b36f0c8f7a1f14d4558b72793f62e90a1 (opens in a new tab)
- git.kernel.org/stable/c/a853c3769b73ceb2d2b735aff621d1d51fe0553d (opens in a new tab)
- git.kernel.org/stable/c/b1b0b9efe641afa5c2d4ba2ec77aed7b6f4bc398 (opens in a new tab)
- git.kernel.org/stable/c/c37a39b963034cc2d141baf46017614cb1fc275f (opens in a new tab)
- git.kernel.org/stable/c/f73b7de5338fcca7f63ca88597a050c119501531 (opens in a new tab)
- ubuntu.com/security/CVE-2026-72433 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-72433 (opens in a new tab)
- git.kernel.org/linus/27dd2997746d54ebc079bb13161cc1bdd401d4a6 (opens in a new tab)
- ubuntu.com/security/notices/USN-8876-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8878-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8879-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8877-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8875-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8888-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8889-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8887-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8888-2 (opens in a new tab)