CVE-2022-49698— netfilter: use get_random_u32 instead of prandom
Affected Version Matrix 10
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 978d8f9055c3a7c35db2ac99cd2580b993396e33< 15cc30ac2a8d7185f8ebf97dd1ddd90a7c79783b | affected |
978d8f9055c3a7c35db2ac99cd2580b993396e33< d0906b0fffc9f19bc42708ca3e84e2089088386c | affected | ||
978d8f9055c3a7c35db2ac99cd2580b993396e33< 6ce71f83f798be7e1ca68707fec449fbecb38852 | affected | ||
978d8f9055c3a7c35db2ac99cd2580b993396e33< b1fd94e704571f98b21027340eecf821b2bdffba | affected | ||
4.18 | affected | ||
< 4.18 | unaffected | ||
5.10.127≤ 5.10.* | unaffected | ||
5.15.51≤ 5.15.* | unaffected | ||
| … +2 more rows | |||
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I. Basic Information for CVE-2022-49698
Vulnerability Information
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Vulnerability Title
netfilter: use get_random_u32 instead of prandom
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于netfilter中使用prandom可能导致抢占问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2022-49698
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|---|
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Patches & Fixes for CVE-2022-49698 (4)
Same Patch Batch · Linux · 2025-02-26 · 706 CVEs total
| CVE-2022-49496 | media: mediatek: vcodec: prevent kernel crash when rmmod mtk-vcodec-dec.ko | |
| CVE-2022-49487 | mtd: rawnand: intel: fix possible null-ptr-deref in ebu_nand_probe() | |
| CVE-2022-49486 | ASoC: fsl: Fix refcount leak in imx_sgtl5000_probe | |
| CVE-2022-49488 | drm/msm/mdp5: Return error code in mdp5_mixer_release when deadlock is detected | |
| CVE-2022-49489 | drm/msm/disp/dpu1: set vbif hw config to NULL to avoid use after memory free during pm run | |
| CVE-2022-49490 | drm/msm/mdp5: Return error code in mdp5_pipe_release when deadlock is detected | |
| CVE-2022-49491 | drm/rockchip: vop: fix possible null-ptr-deref in vop_bind() | |
| CVE-2022-49492 | nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags | |
| CVE-2022-49493 | ASoC: rt5645: Fix errorenous cleanup order | |
| CVE-2022-49494 | mtd: rawnand: cadence: fix possible null-ptr-deref in cadence_nand_dt_probe() | |
| CVE-2022-49495 | drm/msm/hdmi: check return value after calling platform_get_resource_byname() | |
| CVE-2022-49497 | net: remove two BUG() from skb_checksum_help() | |
| CVE-2022-49503 | ath9k_htc: fix potential out of bounds access with invalid rxstatus->rs_keyix | |
| CVE-2022-49508 | HID: elan: Fix potential double free in elan_input_configured | |
| CVE-2022-49506 | drm/mediatek: Add vblank register/unregister callback functions | |
| CVE-2022-49504 | scsi: lpfc: Inhibit aborts if external loopback plug is inserted | |
| CVE-2022-49505 | NFC: NULL out the dev->rfkill to prevent UAF | |
| CVE-2022-49502 | media: rga: fix possible memory leak in rga_probe | |
| CVE-2022-49499 | drm/msm: Fix null pointer dereferences without iommu | |
| CVE-2022-49498 | ALSA: pcm: Check for null pointer of pointer substream before dereferencing it |
Showing top 20 of 706 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-46300
net: skbuff: preserve shared-frag marker during coalescing - CVE-2026-43503
net: skbuff: propagate shared-frag marker through frag-trans - CVE-2026-43502
net/rds: handle zerocopy send cleanup before the message is - CVE-2026-43501
ipv6: rpl: reserve mac_len headroom when recompressed SRH gr - CVE-2026-43498
accel/ivpu: Disallow re-exporting imported GEM objects
Same vendor: Linux
- CVE-2026-46300
net: skbuff: preserve shared-frag marker during coalescing - CVE-2026-43503
net: skbuff: propagate shared-frag marker through frag-trans - CVE-2026-43502
net/rds: handle zerocopy send cleanup before the message is - CVE-2026-43501
ipv6: rpl: reserve mac_len headroom when recompressed SRH gr - CVE-2026-43498
accel/ivpu: Disallow re-exporting imported GEM objects
V. Comments for CVE-2022-49698
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