Vulnerability · Published Feb 22, 2022 · Assigned by mitre
CVE-2022-25636
High 7.8
In plain English
A high-severity security flaw in the kernel-tools-libs-devel package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.6% (higher than 86% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.8High
Exploit odds (30 days)2.6%top 14.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack tooling1Public PoC
Official description
net/netfilter/nf_dup_netdev.c in the Linux kernel 5.4 through 5.6.10 allows local users to gain privileges because of a heap out-of-bounds write. This is related to nf_tables_offload.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | kernel-tools-libs-devel | 4.18.0-348.23.1.el8_5 | ALSA-2022:1550 |
| Debian:12 | linux | 5.16.11-1 | DEBIAN-CVE-2022-25636 |
| Debian:13 | linux | 5.16.11-1 | DEBIAN-CVE-2022-25636 |
| Debian:14 | linux | 5.16.11-1 | DEBIAN-CVE-2022-25636 |
| Rocky Linux:8 | kernel | 0:4.18.0-348.23.1.el8_5 | RLSA-2022:1550 |
| Rocky Linux:8 | kernel-rt | 0:4.18.0-348.23.1.rt7.153.el8_5 | RLSA-2022:1555 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2022-25636 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2022-25636 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2022-25636 |
Affected products (as reported)
References
- https://www.openwall.com/lists/oss-security/2022/02/21/2 x_refsource_MISC
- https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf.git/commit/?id=b1a5983f56e371046dcf164f90bfaf704d2b89f6 x_refsource_MISC
- [oss-security] 20220222 Re: Linux kernel: heap out of bounds write in nf_dup_netdev.c since 5.4 mailing-list, x_refsource_MLIST
- DSA-5095 vendor-advisory, x_refsource_DEBIAN
- https://www.oracle.com/security-alerts/cpujul2022.html x_refsource_MISC
- https://nickgregory.me/linux/security/2022/03/12/cve-2022-25636/ x_refsource_MISC
- https://github.com/Bonfee/CVE-2022-25636 x_refsource_MISC
- http://packetstormsecurity.com/files/166444/Kernel-Live-Patch-Security-Notice-LSN-0085-1.html x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20220325-0002/ x_refsource_CONFIRM