Description (CNA)
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()").
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 833a1065eeb14437a9a0dfa9dad06ea09894e0b5 before 35d9ec61466109ef0c2de87067338d929f629527; affected 833a1065eeb14437a9a0dfa9dad06ea09894e0b5 before 704319510af2179cf03955747d714ab291075c25; affected 833a1065eeb14437a9a0dfa9dad06ea09894e0b5 before 17acbcd4c5a6ca3dd3f9e52eb203c9175bde609a; affected 833a1065eeb14437a9a0dfa9dad06ea09894e0b5 before 030c878eaedf0449e2b5401a0a0146d0afcc645e; affected 833a1065eeb14437a9a0dfa9dad06ea09894e0b5 before d643cea4248668dc493c513aa7cbc6505eb1a4a9; affected 833a1065eeb14437a9a0dfa9dad06ea09894e0b5 before d80677ad7aa5bebfccfd58caa4852b65abe70561; affected 833a1065eeb14437a9a0dfa9dad06ea09894e0b5 before 5bd9e4e7cdaa03879e9b73b12ab52cceb1edd55b |
| Linux / Linux | affected 5.11; unaffected 0 before 5.11; unaffected 5.15.222 through 5.15.*; unaffected 6.1.189 through 6.1.*; unaffected 6.6.158 through 6.6.*; unaffected 6.12.111 through 6.12.*; unaffected 6.18.53 through 6.18.*; unaffected 7.2.7 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/35d9ec61466109ef0c2de87067338d929f629527
- https://git.kernel.org/stable/c/704319510af2179cf03955747d714ab291075c25
- https://git.kernel.org/stable/c/17acbcd4c5a6ca3dd3f9e52eb203c9175bde609a
- https://git.kernel.org/stable/c/030c878eaedf0449e2b5401a0a0146d0afcc645e
- https://git.kernel.org/stable/c/d643cea4248668dc493c513aa7cbc6505eb1a4a9
- https://git.kernel.org/stable/c/d80677ad7aa5bebfccfd58caa4852b65abe70561
- https://git.kernel.org/stable/c/5bd9e4e7cdaa03879e9b73b12ab52cceb1edd55b