CVE-2026-98031
nexthop: Initialize extack in remove_nh_grp_entry()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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()").
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 25, 2026 |
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Affected Versions
Linux / Linux
833a1065eeb14437a9a0dfa9dad06ea09894e0b5 < 030c878eaedf0449e2b5401a0a0146d0afcc645e 833a1065eeb14437a9a0dfa9dad06ea09894e0b5 < d643cea4248668dc493c513aa7cbc6505eb1a4a9 833a1065eeb14437a9a0dfa9dad06ea09894e0b5 < d80677ad7aa5bebfccfd58caa4852b65abe70561 833a1065eeb14437a9a0dfa9dad06ea09894e0b5 < 5bd9e4e7cdaa03879e9b73b12ab52cceb1edd55b
Linux / Linux
5.11
References
git.kernel.org: https://git.kernel.org/stable/c/030c878eaedf0449e2b5401a0a0146d0afcc645e git.kernel.org: https://git.kernel.org/stable/c/d643cea4248668dc493c513aa7cbc6505eb1a4a9 git.kernel.org: https://git.kernel.org/stable/c/d80677ad7aa5bebfccfd58caa4852b65abe70561 git.kernel.org: https://git.kernel.org/stable/c/5bd9e4e7cdaa03879e9b73b12ab52cceb1edd55b