CVE-2026-98594: Linux kernel · tg3: clean up PHYLIB resources on probe failure
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 28 Oct 2026, 01:28 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Exploitation evidence
Disclosed: evidence found.
CVE published 18 Oct 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.
Description
In the Linux kernel, the following vulnerability has been resolved: tg3: clean up PHYLIB resources on probe failure tg3_get_invariants() can register an MDIO bus and connect a PHY for USE_PHYLIB devices. If tg3_init_one() later fails, its common error path releases the mappings and netdev without undoing those PHYLIB resources. Disconnect the PHY and unregister the MDIO bus before the remaining teardown. Guard PHY cleanup with USE_PHYLIB to match tg3_phy_init(), and call tg3_mdio_fini() unconditionally to match tg3_mdio_init(). The existing IS_CONNECTED and MDIOBUS_INITED flags make both helpers safe when initialization only completed partially. This issue was identified during our ongoing static-analysis research while reviewing kernel code.
References
- ubuntu.com/security/CVE-2026-98594 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-98594 (opens in a new tab)
- git.kernel.org/stable/c/0844402326d4e48a28688f93ec6442e93bb442fa (opens in a new tab)
- git.kernel.org/stable/c/ce86d6929d03e6b0abcb781dfa50f9f0816bff78 (opens in a new tab)
- git.kernel.org/stable/c/6515c41503eef849abd2c7364f34e4bb25110f90 (opens in a new tab)
- git.kernel.org/stable/c/b6c0c757c65893ad7bb17e8bcf33cdd8257d7b3d (opens in a new tab)
- git.kernel.org/stable/c/d2abb0013b933d59ee441185df0eca9e8c0b33eb (opens in a new tab)
- git.kernel.org/stable/c/a92e1a412c53dc0d9ad639e7abf8b3fc70a5b6ad (opens in a new tab)
- git.kernel.org/stable/c/a449eedb3b1eb5b8b1f5ed116a1bfe85eaaf81df (opens in a new tab)
- git.kernel.org/stable/c/e766321288b507afb70d2bfef6ba443213329f79 (opens in a new tab)