Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: netfilter: use get_random_u32 instead of prandom bh might occur while updating per-cpu rnd_state from user context, ie. local_out path. BUG: using smp_processor_id() in preemptible [00000000] code: nginx/2725 caller is nft_ng_random_eval+0x24/0x54 [nft_numgen] Call Trace: check_preemption_disabled+0xde/0xe0 nft_ng_random_eval+0x24/0x54 [nft_numgen] Use the random driver instead, this also avoids need for local prandom state. Moreover, prandom now uses the random driver since d4150779e60f ("random32: use real rng for non-deterministic randomness"). Based on earlier patch from Pablo Neira.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 978d8f9055c3a7c35db2ac99cd2580b993396e33 before 15cc30ac2a8d7185f8ebf97dd1ddd90a7c79783b; affected 978d8f9055c3a7c35db2ac99cd2580b993396e33 before d0906b0fffc9f19bc42708ca3e84e2089088386c; affected 978d8f9055c3a7c35db2ac99cd2580b993396e33 before 6ce71f83f798be7e1ca68707fec449fbecb38852; affected 978d8f9055c3a7c35db2ac99cd2580b993396e33 before b1fd94e704571f98b21027340eecf821b2bdffba |
| Linux / Linux | affected 4.18; unaffected 0 before 4.18; unaffected 5.10.127 through 5.10.*; unaffected 5.15.51 through 5.15.*; unaffected 5.18.8 through 5.18.*; unaffected 5.19 through * |
CWE
No CWE identifiers supplied.