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CVE-2026-98495

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Last modified

CVE-2026-98495 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: net: arp: terminate device name before lookup The ARP ioctl copies a user-provided struct arpreq into a stack object. Its arp_dev field may contain IFNAMSIZ bytes without a NUL terminator. Such input is passed to dev_get_by_name_rcu() or __dev_get_by_name(), where strcmp() can read past the end of the stack object when a matching alternative interface name exists. Terminate the field before the lookup to prevent the out-of-bounds read..

Description

In the Linux kernel, the following vulnerability has been resolved: net: arp: terminate device name before lookup The ARP ioctl copies a user-provided struct arpreq into a stack object. Its arp_dev field may contain IFNAMSIZ bytes without a NUL terminator. Such input is passed to dev_get_by_name_rcu() or __dev_get_by_name(), where strcmp() can read past the end of the stack object when a matching alternative interface name exists. Terminate the field before the lookup to prevent the out-of-bounds read.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc, < ae6d704dbf9542b0a0830ec91a2db4f30307e7d8; >= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc, < 47107491b48ceef0a2faa7a010cfa961f211ef9f; >= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc, < 7389757d88f54237951d7497d9c4dae7cc6d64be; >= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc, < 1b08c5c3ac27c9ff91c5309f4a32b4e91ce2263b; >= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc, < 414bbad9928598904313299ac9e037a73f520be1; >= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc, < ba664d83638640cf454b65167339cbf20dfd6f10; >= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc, < 35e716a70733472ede300540082d64c33bf3b4c9; >= 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc, < d8b6529e80bcb4fb8177121404cbb3377acaebd2
LinuxLinux5.5

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98495?
In the Linux kernel, the following vulnerability has been resolved: net: arp: terminate device name before lookup The ARP ioctl copies a user-provided struct arpreq into a stack object. Its arp_dev field may contain IFNAMSIZ bytes without a NUL terminator. Such input is passed to dev_get_by_name_rcu() or __dev_get_by_name(), where strcmp() can read past the end of the stack object when a matching alternative interface name exists. Terminate the field before the lookup to prevent the out-of-bounds read.
How severe is CVE-2026-98495?
Severity scoring for CVE-2026-98495 is pending analysis.
How do I fix CVE-2026-98495?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST