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CVE-2026-98899

HIGHCVSS 7.8/10EPSS 0.17%

Last modified

CVE-2026-98899 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: mark the rcu locked areas properly When we bump the uref counter, there's no need to keep the rcu lock because the referred hash table can't disappear. Also, from the same reason in mtype_gc we need the rcu lock and not a spinlock.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: mark the rcu locked areas properly When we bump the uref counter, there's no need to keep the rcu lock because the referred hash table can't disappear. Also, from the same reason in mtype_gc we need the rcu lock and not a spinlock.

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.17%

6.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

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

VendorProductVersions
LinuxLinux>= f66ee0410b1c3481ee75e5db9b34547b4d582465, < 67bd3d2350d17c2f4fb158c3f917c10b15ecbc94; >= f66ee0410b1c3481ee75e5db9b34547b4d582465, < 892399abd1a005a455d5b74d86d82b9773405f2b; >= f66ee0410b1c3481ee75e5db9b34547b4d582465, < eee5172741b2c0e73210020732043e5d589295d3; >= f66ee0410b1c3481ee75e5db9b34547b4d582465, < ecb48c6b9edc78de8dd456c365727ae14b88c1ee; >= f66ee0410b1c3481ee75e5db9b34547b4d582465, < 0c46c9ce24130657ec7460c27fba5d445f5abd06; >= f66ee0410b1c3481ee75e5db9b34547b4d582465, < ca9fab1ca15534cef1630e81a479e94b3bbcdb6a; >= f66ee0410b1c3481ee75e5db9b34547b4d582465, < 5d0c22e73656d050daffad10a2ba8765ce8441c8; 5dd9488ae41070b69d2f4acb580f77db5705f9ca; a469bab3386aebff33c59506f3a95e35b91118fd; >= 5.4.24, < 5.5; >= 5.5.8, < 5.6
LinuxLinux5.6

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98899?
In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: mark the rcu locked areas properly When we bump the uref counter, there's no need to keep the rcu lock because the referred hash table can't disappear. Also, from the same reason in mtype_gc we need the rcu lock and not a spinlock.
How severe is CVE-2026-98899?
CVE-2026-98899 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2026-98899?
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