🔐 CVE Alert

CVE-2022-49698

UNKNOWN 0.0

netfilter: use get_random_u32 instead of prandom

CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th

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.

Vendor linux
Product linux
Ecosystems
Industries
Technology
Published Feb 26, 2025
Last Updated May 11, 2026
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Affected Versions

Linux / Linux
978d8f9055c3a7c35db2ac99cd2580b993396e33 < 15cc30ac2a8d7185f8ebf97dd1ddd90a7c79783b 978d8f9055c3a7c35db2ac99cd2580b993396e33 < d0906b0fffc9f19bc42708ca3e84e2089088386c 978d8f9055c3a7c35db2ac99cd2580b993396e33 < 6ce71f83f798be7e1ca68707fec449fbecb38852 978d8f9055c3a7c35db2ac99cd2580b993396e33 < b1fd94e704571f98b21027340eecf821b2bdffba
Linux / Linux
4.18

References

NVD ↗ CVE.org ↗ EPSS Data ↗
git.kernel.org: https://git.kernel.org/stable/c/15cc30ac2a8d7185f8ebf97dd1ddd90a7c79783b git.kernel.org: https://git.kernel.org/stable/c/d0906b0fffc9f19bc42708ca3e84e2089088386c git.kernel.org: https://git.kernel.org/stable/c/6ce71f83f798be7e1ca68707fec449fbecb38852 git.kernel.org: https://git.kernel.org/stable/c/b1fd94e704571f98b21027340eecf821b2bdffba