Vulnerability · Published Mar 23, 2023 · Assigned by mitre
CVE-2023-28772
Medium 6.7
In plain English
A medium-severity buffer overflow 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 0.7% (higher than 54% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.7Medium
Exploit odds (30 days)0.7%top 46.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
Official description
An issue was discovered in the Linux kernel before 5.13.3. lib/seq_buf.c has a seq_buf_putmem_hex buffer overflow.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | bpftool | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-abi-stablelists | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-core | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-cross-headers | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-debug | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-debug-core | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-debug-devel | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-debug-modules | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-debug-modules-extra | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-devel | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-doc | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-headers | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-modules | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-modules-extra | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-tools | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-tools-libs | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-tools-libs-devel | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-zfcpdump | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-zfcpdump-core | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-zfcpdump-devel | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-zfcpdump-modules | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-zfcpdump-modules-extra | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | perf | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | python3-perf | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| Debian:12 | linux | 5.14.6-1 | DEBIAN-CVE-2023-28772 |
| Debian:13 | linux | 5.14.6-1 | DEBIAN-CVE-2023-28772 |
| Debian:14 | linux | 5.14.6-1 | DEBIAN-CVE-2023-28772 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2023-28772 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2023-28772 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2023-28772 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2023-28772 |
Affected products (as reported)
Weakness: CWE-120 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
References
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.3
- https://github.com/torvalds/linux/commit/d3b16034a24a112bb83aeb669ac5b9b01f744bb7
- https://lore.kernel.org/lkml/20210625122453.5e2fe304%40oasis.local.home/
- https://lkml.kernel.org/r/20210626032156.47889-1-yun.zhou%40windriver.com
- https://security.netapp.com/advisory/ntap-20230427-0005/