Vulnerability in Linux
CVE-2022-33743
network backend may cause Linux netfront to use freed SKBs While adding logic to support XDP (eXpress Data Path), a code label was moved in a way allowing for SKBs having references (pointers) retained for further processing to nevertheless be freed.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (26.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 26.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Linux — versions consult Xen advisory XSA-405
- Linux Kernel
- Xen
- Debian Linux — versions 11.0
References
- xenbits.xenproject.org/xsa/advisory-405.txt (Vendor Advisory)
- xenbits.xen.org/xsa/advisory-405.html (Patch, Vendor Advisory)
- www.openwall.com/lists/oss-security/2022/07/05/5 (mailing-list, Patch, Mailing List, Third Party Advisory)
- www.debian.org/security/2022/dsa-5191 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-33743?
- CVE-2022-33743 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2022-07-05.
- How severe is CVE-2022-33743?
- High severity. CVSS v3 base score is 7.8 out of 10.