CVE-2026-98302: Linux kernel · net: fddi: skfp: fix NULL deref when setting the MAC address while down
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in d6f63fdb298d546a47790cb373db65462c264d04 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 13:47 UTC
Rated Medium by Threat Radar's AI analysis · 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.
- Patch
- Available – fixed in d6f63fdb298d546a47790cb373db65462c264d04, 835903bea770ad96ab4322e18d98e00f8e0b39c3, 822903ed991971780db1db1be31a4f00e2b13e30 +5
Exploitation evidence
Disclosed: evidence found.
CVE published 6 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
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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AI-suggested
A fix is available and has been applied in the Linux kernel source. The patch guards the adapter reset call with a check for the interface running state, preventing the NULL dereference. Systems running affected versions should update to a fixed kernel version containing the patch. No additional action is required beyond applying the official fix.
Description
A NULL pointer dereference vulnerability exists in the Linux kernel's skfp driver for FDDI devices when setting the MAC address on an interface that is down. The issue arises because the driver calls ResetAdapter() unconditionally without checking if the interface is running, leading to dereferencing NULL transmit queue pointers and causing a kernel crash (oops). The fix involves skipping the adapter reset when the interface is down, preserving the MAC address setting without triggering the crash.
References
- git.kernel.org/stable/c/835903bea770ad96ab4322e18d98e00f8e0b39c3 (opens in a new tab)
- git.kernel.org/stable/c/5fd0f401b3eee95c93daa35ef99cb03d676031f0 (opens in a new tab)
- git.kernel.org/stable/c/731db6110b3148331ed8d5d11a564bfd520721d9 (opens in a new tab)
- git.kernel.org/stable/c/822903ed991971780db1db1be31a4f00e2b13e30 (opens in a new tab)
- git.kernel.org/stable/c/616ba18b2cfb72b7bea214bdd72df2485b2e37dc (opens in a new tab)
- git.kernel.org/stable/c/d6f63fdb298d546a47790cb373db65462c264d04 (opens in a new tab)
- git.kernel.org/stable/c/438131e7ae847e907d345bf504d7e25585561b5c (opens in a new tab)
- git.kernel.org/stable/c/7c8810c2e69c3d9ca6df870b40ae9218e50b4fb1 (opens in a new tab)