CVE-2022-49698
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-49698
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49698.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-49698
- Downstream
- Published
- 2025-02-26T07:01:44Z
- Modified
- 2025-08-09T19:01:26Z
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
netfilter: use getrandomu32 instead of prandom
bh might occur while updating per-cpu rndstate from user context, ie. localout path.
BUG: using smpprocessorid() in preemptible [00000000] code: nginx/2725 caller is nftngrandomeval+0x24/0x54 [nftnumgen] Call Trace: checkpreemptiondisabled+0xde/0xe0 nftngrandomeval+0x24/0x54 [nftnumgen]
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.
- References