Vulnerability · Published Mar 23, 2022 · Assigned by mitre
CVE-2022-27666
High 7.8
In plain English
A high-severity security flaw in the bpftool package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 5.5% (higher than 93% 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)5.5%top 7.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack tooling1Public PoC
Official description
A heap buffer overflow flaw was found in IPsec ESP transformation code in net/ipv4/esp4.c and net/ipv6/esp6.c. This flaw allows a local attacker with a normal user privilege to overwrite kernel heap objects and may cause a local privilege escalation threat.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | bpftool | 4.18.0-372.13.1.el8_6 | ALSA-2022:5316 |
| AlmaLinux:9 | bpftool | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:8 | kernel | 4.18.0-372.13.1.el8_6 | ALSA-2022:5316 |
| AlmaLinux:9 | kernel | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:8 | kernel-abi-stablelists | 4.18.0-372.13.1.el8_6 | ALSA-2022:5316 |
| AlmaLinux:9 | kernel-abi-stablelists | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:8 | kernel-core | 4.18.0-372.13.1.el8_6 | ALSA-2022:5316 |
| AlmaLinux:9 | kernel-core | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:8 | kernel-cross-headers | 4.18.0-372.13.1.el8_6 | ALSA-2022:5316 |
| AlmaLinux:9 | kernel-cross-headers | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:8 | kernel-debug | 4.18.0-372.13.1.el8_6 | ALSA-2022:5316 |
| AlmaLinux:9 | kernel-debug | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:8 | kernel-debug-core | 4.18.0-372.13.1.el8_6 | ALSA-2022:5316 |
| AlmaLinux:9 | kernel-debug-core | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:8 | kernel-debug-devel | 4.18.0-372.13.1.el8_6 | ALSA-2022:5316 |
| AlmaLinux:9 | kernel-debug-devel | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:9 | kernel-debug-devel-matched | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:8 | kernel-debug-modules | 4.18.0-372.13.1.el8_6 | ALSA-2022:5316 |
| AlmaLinux:9 | kernel-debug-modules | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:8 | kernel-debug-modules-extra | 4.18.0-372.13.1.el8_6 | ALSA-2022:5316 |
| AlmaLinux:9 | kernel-debug-modules-extra | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:8 | kernel-devel | 4.18.0-372.13.1.el8_6 | ALSA-2022:5316 |
| AlmaLinux:9 | kernel-devel | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:9 | kernel-devel-matched | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:8 | kernel-doc | 4.18.0-372.13.1.el8_6 | ALSA-2022:5316 |
| AlmaLinux:9 | kernel-doc | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:9 | kernel-headers | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:8 | kernel-modules | 4.18.0-372.13.1.el8_6 | ALSA-2022:5316 |
| AlmaLinux:9 | kernel-modules | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:8 | kernel-modules-extra | 4.18.0-372.13.1.el8_6 | ALSA-2022:5316 |
| AlmaLinux:9 | kernel-modules-extra | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:8 | kernel-rt | 4.18.0-372.13.1.rt7.170.el8_6 | ALSA-2022:5344 |
| AlmaLinux:9 | kernel-rt | 5.14.0-70.17.1.rt21.89.el9_0 | ALSA-2022:5267 |
| AlmaLinux:8 | kernel-rt-core | 4.18.0-372.13.1.rt7.170.el8_6 | ALSA-2022:5344 |
| AlmaLinux:9 | kernel-rt-core | 5.14.0-70.17.1.rt21.89.el9_0 | ALSA-2022:5267 |
| AlmaLinux:8 | kernel-rt-debug | 4.18.0-372.13.1.rt7.170.el8_6 | ALSA-2022:5344 |
| AlmaLinux:9 | kernel-rt-debug | 5.14.0-70.17.1.rt21.89.el9_0 | ALSA-2022:5267 |
| AlmaLinux:8 | kernel-rt-debug-core | 4.18.0-372.13.1.rt7.170.el8_6 | ALSA-2022:5344 |
| AlmaLinux:9 | kernel-rt-debug-core | 5.14.0-70.17.1.rt21.89.el9_0 | ALSA-2022:5267 |
| AlmaLinux:8 | kernel-rt-debug-devel | 4.18.0-372.13.1.rt7.170.el8_6 | ALSA-2022:5344 |
| AlmaLinux:9 | kernel-rt-debug-devel | 5.14.0-70.17.1.rt21.89.el9_0 | ALSA-2022:5267 |
| AlmaLinux:8 | kernel-rt-debug-kvm | 4.18.0-372.13.1.rt7.170.el8_6 | ALSA-2022:5344 |
| AlmaLinux:9 | kernel-rt-debug-kvm | 5.14.0-70.17.1.rt21.89.el9_0 | ALSA-2022:5267 |
| AlmaLinux:8 | kernel-rt-debug-modules | 4.18.0-372.13.1.rt7.170.el8_6 | ALSA-2022:5344 |
| AlmaLinux:9 | kernel-rt-debug-modules | 5.14.0-70.17.1.rt21.89.el9_0 | ALSA-2022:5267 |
| AlmaLinux:8 | kernel-rt-debug-modules-extra | 4.18.0-372.13.1.rt7.170.el8_6 | ALSA-2022:5344 |
| AlmaLinux:9 | kernel-rt-debug-modules-extra | 5.14.0-70.17.1.rt21.89.el9_0 | ALSA-2022:5267 |
| AlmaLinux:8 | kernel-rt-devel | 4.18.0-372.13.1.rt7.170.el8_6 | ALSA-2022:5344 |
| AlmaLinux:9 | kernel-rt-devel | 5.14.0-70.17.1.rt21.89.el9_0 | ALSA-2022:5267 |
| AlmaLinux:8 | kernel-rt-kvm | 4.18.0-372.13.1.rt7.170.el8_6 | ALSA-2022:5344 |
| AlmaLinux:9 | kernel-rt-kvm | 5.14.0-70.17.1.rt21.89.el9_0 | ALSA-2022:5267 |
| AlmaLinux:8 | kernel-rt-modules | 4.18.0-372.13.1.rt7.170.el8_6 | ALSA-2022:5344 |
| AlmaLinux:9 | kernel-rt-modules | 5.14.0-70.17.1.rt21.89.el9_0 | ALSA-2022:5267 |
| AlmaLinux:8 | kernel-rt-modules-extra | 4.18.0-372.13.1.rt7.170.el8_6 | ALSA-2022:5344 |
| AlmaLinux:9 | kernel-rt-modules-extra | 5.14.0-70.17.1.rt21.89.el9_0 | ALSA-2022:5267 |
| AlmaLinux:8 | kernel-tools | 4.18.0-372.13.1.el8_6 | ALSA-2022:5316 |
| AlmaLinux:9 | kernel-tools | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:8 | kernel-tools-libs | 4.18.0-372.13.1.el8_6 | ALSA-2022:5316 |
| AlmaLinux:9 | kernel-tools-libs | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:8 | kernel-tools-libs-devel | 4.18.0-372.13.1.el8_6 | ALSA-2022:5316 |
| AlmaLinux:9 | kernel-tools-libs-devel | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:9 | kernel-zfcpdump | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:9 | kernel-zfcpdump-core | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:9 | kernel-zfcpdump-devel | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:9 | kernel-zfcpdump-devel-matched | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:9 | kernel-zfcpdump-modules | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:9 | kernel-zfcpdump-modules-extra | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:8 | perf | 4.18.0-372.13.1.el8_6 | ALSA-2022:5316 |
| AlmaLinux:9 | perf | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| AlmaLinux:8 | python3-perf | 4.18.0-372.13.1.el8_6 | ALSA-2022:5316 |
| AlmaLinux:9 | python3-perf | 5.14.0-70.17.1.el9_0 | ALSA-2022:5249 |
| Debian:12 | linux | 5.16.18-1 | DEBIAN-CVE-2022-27666 |
| Debian:13 | linux | 5.16.18-1 | DEBIAN-CVE-2022-27666 |
| Debian:14 | linux | 5.16.18-1 | DEBIAN-CVE-2022-27666 |
| Rocky Linux:8 | kernel | 0:4.18.0-372.13.1.el8_6 | RLSA-2022:5316 |
| Rocky Linux:8 | kernel-rt | 0:4.18.0-372.13.1.rt7.170.el8_6 | RLSA-2022:5344 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2022-27666 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2022-27666 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2022-27666 |
Affected products (as reported)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2061633 x_refsource_MISC
- https://github.com/torvalds/linux/commit/ebe48d368e97d007bfeb76fcb065d6cfc4c96645 x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20220429-0001/ x_refsource_CONFIRM
- DSA-5127 vendor-advisory, x_refsource_DEBIAN
- DSA-5173 vendor-advisory, x_refsource_DEBIAN