Strix
75.5K

CVE-2026-98031

UnknownEPSS 0.17%

Last modified

CVE-2026-98031 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: nexthop: Initialize extack in remove_nh_grp_entry() remove_nh_grp_entry() prints the extack message when a listener fails to replace the reduced nexthop group. However, extack is not initialized and listeners are not required to set a message when returning an error. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: nexthop: Initialize extack in remove_nh_grp_entry() remove_nh_grp_entry() prints the extack message when a listener fails to replace the reduced nexthop group. However, extack is not initialized and listeners are not required to set a message when returning an error. Neither netdevsim nor mlxsw do so when an allocation fails, resulting in the dereference of an uninitialized stack pointer. Fix by zero-initializing extack, as was done in commit 6347c5314cee ("nexthop: initialize extack in nh_res_bucket_migrate()").

Metrics

EPSS Probability
0.17%

6.2th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

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

VendorProductVersions
LinuxLinux>= 833a1065eeb14437a9a0dfa9dad06ea09894e0b5, < 35d9ec61466109ef0c2de87067338d929f629527; >= 833a1065eeb14437a9a0dfa9dad06ea09894e0b5, < 704319510af2179cf03955747d714ab291075c25; >= 833a1065eeb14437a9a0dfa9dad06ea09894e0b5, < 17acbcd4c5a6ca3dd3f9e52eb203c9175bde609a; >= 833a1065eeb14437a9a0dfa9dad06ea09894e0b5, < 030c878eaedf0449e2b5401a0a0146d0afcc645e; >= 833a1065eeb14437a9a0dfa9dad06ea09894e0b5, < d643cea4248668dc493c513aa7cbc6505eb1a4a9; >= 833a1065eeb14437a9a0dfa9dad06ea09894e0b5, < d80677ad7aa5bebfccfd58caa4852b65abe70561; >= 833a1065eeb14437a9a0dfa9dad06ea09894e0b5, < 5bd9e4e7cdaa03879e9b73b12ab52cceb1edd55b
LinuxLinux5.11

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98031?
In the Linux kernel, the following vulnerability has been resolved: nexthop: Initialize extack in remove_nh_grp_entry() remove_nh_grp_entry() prints the extack message when a listener fails to replace the reduced nexthop group. However, extack is not initialized and listeners are not required to set a message when returning an error. Neither netdevsim nor mlxsw do so when an allocation fails, resulting in the dereference of an uninitialized stack pointer. Fix by zero-initializing extack, as was done in commit 6347c5314cee ("nexthop: initialize extack in nh_res_bucket_migrate()").
How severe is CVE-2026-98031?
Severity scoring for CVE-2026-98031 is pending analysis. The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2026-98031?
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.

How Strix Helps

Related CVEs from 2026

View all 2026CVEs →

Are you affected by CVE-2026-98031?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST