Vulnerability · Published Apr 2, 2021 · Assigned by mitre
CVE-2021-30002
Medium 6.2
In plain English
A medium-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 0.4% (higher than 31% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.2Medium
Exploit odds (30 days)0.4%top 69.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
An issue was discovered in the Linux kernel before 5.11.3 when a webcam device exists. video_usercopy in drivers/media/v4l2-core/v4l2-ioctl.c has a memory leak for large arguments, aka CID-fb18802a338b.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | bpftool | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-abi-stablelists | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-core | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-cross-headers | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-debug | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-debug-core | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-debug-devel | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-debug-modules | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-debug-modules-extra | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-devel | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-doc | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-headers | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-modules | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-modules-extra | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-rt | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-rt-core | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-rt-debug | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-rt-debug-core | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-rt-debug-devel | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-rt-debug-kvm | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-rt-debug-modules | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-rt-debug-modules-extra | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-rt-devel | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-rt-kvm | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-rt-modules | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-rt-modules-extra | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-tools | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-tools-libs | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-tools-libs-devel | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-zfcpdump | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-zfcpdump-core | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-zfcpdump-devel | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-zfcpdump-modules | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-zfcpdump-modules-extra | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | perf | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | python3-perf | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| Debian:12 | linux | 5.10.24-1 | DEBIAN-CVE-2021-30002 |
| Debian:13 | linux | 5.10.24-1 | DEBIAN-CVE-2021-30002 |
| Debian:14 | linux | 5.10.24-1 | DEBIAN-CVE-2021-30002 |
| Rocky Linux:8 | kernel | 0:4.18.0-425.3.1.el8 | RLSA-2022:7683 |
| Rocky Linux:8 | kernel-rt | 0:4.18.0-425.3.1.rt7.213.el8 | RLSA-2022:7444 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2021-30002 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2021-30002 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2021-30002 |
Affected products (as reported)
References
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fb18802a338b36f675a388fc03d2aa504a0d0899 x_refsource_MISC
- https://bugzilla.suse.com/show_bug.cgi?id=1184120 x_refsource_MISC
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.3 x_refsource_MISC
- [debian-lts-announce] 20210623 [SECURITY] [DLA 2689-1] linux security update mailing-list, x_refsource_MLIST