CVE-2022-49698
published 2025-02-26CVE-2022-49698: 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…
PriorityP340high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.29%
21.0th percentile
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
16 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.18.14-1 (bookworm) | linux 5.18.14-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 978d8f9055c3a7c35db2ac99cd2580b993396e33 < 15cc30ac2a8d7185f8ebf97dd1ddd90a7c79783b | 15cc30ac2a8d7185f8ebf97dd1ddd90a7c79783b |
| linux | linux | >= 978d8f9055c3a7c35db2ac99cd2580b993396e33 < d0906b0fffc9f19bc42708ca3e84e2089088386c | d0906b0fffc9f19bc42708ca3e84e2089088386c |
| linux | linux | >= 978d8f9055c3a7c35db2ac99cd2580b993396e33 < 6ce71f83f798be7e1ca68707fec449fbecb38852 | 6ce71f83f798be7e1ca68707fec449fbecb38852 |
| linux | linux | >= 978d8f9055c3a7c35db2ac99cd2580b993396e33 < b1fd94e704571f98b21027340eecf821b2bdffba | b1fd94e704571f98b21027340eecf821b2bdffba |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.127-1 | 5.10.127-1 |
| linux | linux_kernel | >= 0 < 5.18.14-1 | 5.18.14-1 |
| linux | linux_kernel | >= 0 < 5.18.14-1 | 5.18.14-1 |
| linux | linux_kernel | >= 0 < 5.18.14-1 | 5.18.14-1 |
| linux | linux_kernel | >= 0 < 5.4.0-225.245 | 5.4.0-225.245 |
| linux | linux_kernel | >= 4.18 < 5.10.127 | 5.10.127 |
| linux | linux_kernel | >= 5.11 < 5.15.51 | 5.15.51 |
| linux | linux_kernel | >= 5.16 < 5.18.8 | 5.18.8 |
| ubuntu | linux-bluefield | — | — |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
vendor_ubuntu7.8HIGH
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OSV
linux-raspi, linux-raspi-5.4 vulnerabilities
osv·2026-03-03·CVSS 7.8
CVE-2022-49698 [HIGH] linux-raspi, linux-raspi-5.4 vulnerabilities
linux-raspi, linux-raspi-5.4 vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- Padata parallel execution mechanism;
- Netfilter;
(CVE-2022-49698, CVE-2025-21726, CVE-2025-40019)
OSV
linux-azure, linux-azure-5.4, linux-azure-fips vulnerabilities
osv·2026-02-20·CVSS 7.8
CVE-2022-49698 [HIGH] linux-azure, linux-azure-5.4, linux-azure-fips vulnerabilities
linux-azure, linux-azure-5.4, linux-azure-fips vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- Padata parallel execution mechanism;
- Netfilter;
(CVE-2022-49698, CVE-2025-21726, CVE-2025-40019)
OSV
linux-oracle, linux-oracle-5.4 vulnerabilities
osv·2026-02-12·CVSS 7.8
CVE-2022-49698 [HIGH] linux-oracle, linux-oracle-5.4 vulnerabilities
linux-oracle, linux-oracle-5.4 vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- Padata parallel execution mechanism;
- Netfilter;
(CVE-2022-49698, CVE-2025-21726, CVE-2025-40019)
OSV
linux-xilinx-zynqmp vulnerabilities
osv·2026-02-11·CVSS 7.8
CVE-2022-49698 [HIGH] linux-xilinx-zynqmp vulnerabilities
linux-xilinx-zynqmp vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- Padata parallel execution mechanism;
- Netfilter;
(CVE-2022-49698, CVE-2025-21726, CVE-2025-40019)
OSV
linux-aws-fips, linux-fips, linux-gcp-fips vulnerabilities
osv·2026-01-30·CVSS 7.8
CVE-2022-49698 [HIGH] linux-aws-fips, linux-fips, linux-gcp-fips vulnerabilities
linux-aws-fips, linux-fips, linux-gcp-fips vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- Padata parallel execution mechanism;
- Netfilter;
(CVE-2022-49698, CVE-2025-21726, CVE-2025-40019)
OSV
linux, linux-aws, linux-aws-5.4, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-iot, linux-kvm vulnerabilities
osv·2026-01-30·CVSS 7.8
CVE-2022-49698 [HIGH] linux, linux-aws, linux-aws-5.4, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-iot, linux-kvm vulnerabilities
linux, linux-aws, linux-aws-5.4, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-iot, linux-kvm vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- Padata parallel execution mechanism;
- Netfilter;
(CVE-2022-49698, CVE-2025-21726, CVE-2025-40019)
GHSA
GHSA-crf3-5v2r-wq3r: In the Linux kernel, the following vulnerability has been resolved:
netfilter: use get_random_u32 instead of prandom
bh might occur while updating p
ghsa_unreviewed·2025-10-24
CVE-2022-49698 [HIGH] GHSA-crf3-5v2r-wq3r: In the Linux kernel, the following vulnerability has been resolved:
netfilter: use get_random_u32 instead of prandom
bh might occur while updating p
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.
OSV
CVE-2022-49698: In the Linux kernel, the following vulnerability has been resolved: netfilter: use get_random_u32 instead of prandom bh might occur while updating per
osv·2025-02-26·CVSS 7.8
CVE-2022-49698 [HIGH] CVE-2022-49698: In the Linux kernel, the following vulnerability has been resolved: netfilter: use get_random_u32 instead of prandom bh might occur while updating per
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.
Ubuntu
Linux kernel (BlueField) vulnerabilities
vendor_ubuntu·2026-04-29·CVSS 4.7
CVE-2022-48875 [MEDIUM] Linux kernel (BlueField) vulnerabilities
Title: Linux kernel (BlueField) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Qualys discovered that several vulnerabilities existed in the AppArmor
Linux kernel Security Module (LSM). An unprivileged local attacker could
use these issues to load, replace, and remove arbitrary AppArmor profiles
causing denial of service, exposure of sensitive information (kernel
memory), local privilege escalation, or possibly escape a container.
(LP: #2143853, CVE-2026-23268, CVE-2026-23269, CVE-2026-23403,
CVE-2026-23404, CVE-2026-23405, CVE-2026-23406, CVE-2026-23407,
CVE-2026-23408, CVE-2026-23409, CVE-2026-23410, CVE-2026-23411)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update c
Ubuntu
Linux kernel (Raspberry Pi) vulnerabilities
vendor_ubuntu·2026-03-03·CVSS 7.8
CVE-2022-49698 [HIGH] Linux kernel (Raspberry Pi) vulnerabilities
Title: Linux kernel (Raspberry Pi) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- Padata parallel execution mechanism;
- Netfilter;
(CVE-2022-49698, CVE-2025-21726, CVE-2025-40019)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapacka
Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2026-02-20·CVSS 7.8
CVE-2025-21726 [HIGH] Linux kernel (Azure) vulnerabilities
Title: Linux kernel (Azure) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- Padata parallel execution mechanism;
- Netfilter;
(CVE-2022-49698, CVE-2025-21726, CVE-2025-40019)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.
Ubuntu
Linux kernel (Oracle) vulnerabilities
vendor_ubuntu·2026-02-12·CVSS 7.8
CVE-2025-21726 [HIGH] Linux kernel (Oracle) vulnerabilities
Title: Linux kernel (Oracle) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- Padata parallel execution mechanism;
- Netfilter;
(CVE-2022-49698, CVE-2025-21726, CVE-2025-40019)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e
Ubuntu
Linux kernel (Xilinx ZynqMP) vulnerabilities
vendor_ubuntu·2026-02-11·CVSS 7.8
CVE-2025-21726 [HIGH] Linux kernel (Xilinx ZynqMP) vulnerabilities
Title: Linux kernel (Xilinx ZynqMP) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- Padata parallel execution mechanism;
- Netfilter;
(CVE-2022-49698, CVE-2025-21726, CVE-2025-40019)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapack
Ubuntu
Linux kernel (FIPS) vulnerabilities
vendor_ubuntu·2026-01-30·CVSS 7.8
CVE-2022-49698 [HIGH] Linux kernel (FIPS) vulnerabilities
Title: Linux kernel (FIPS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- Padata parallel execution mechanism;
- Netfilter;
(CVE-2022-49698, CVE-2025-21726, CVE-2025-40019)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2026-01-30·CVSS 7.8
CVE-2025-40019 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- Padata parallel execution mechanism;
- Netfilter;
(CVE-2022-49698, CVE-2025-21726, CVE-2025-40019)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux
Red Hat
kernel: netfilter: use get_random_u32 instead of prandom
vendor_redhat·2025-02-26·CVSS 7.8
CVE-2022-49698 [HIGH] CWE-362 kernel: netfilter: use get_random_u32 instead of prandom
kernel: netfilter: use get_random_u32 instead of prandom
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.
Package: kernel (Red Hat Enterprise Linux 10) - Not affected
Package: kernel
Debian
CVE-2022-49698: linux - In the Linux kernel, the following vulnerability has been resolved: netfilter: ...
vendor_debian·2022·CVSS 7.8
CVE-2022-49698 [HIGH] CVE-2022-49698: linux - In the Linux kernel, the following vulnerability has been resolved: netfilter: ...
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.
Scope: local
bookworm: resolved (fixed in 5.18.14-1)
bullseye: resolved (fixed in 5.10.127-1)
forky: resolved (fixed in 5.18.14-1)
sid: r
No detection rules found.
No public exploits indexed.
2025-02-26
Published