Double Free in Linux Kernel
CVE-2022-4744
A double-free flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user registers the device when the register_netdevice function fails (NETDEV_REGISTER notifier). This flaw allows a local user to crash or potentially escalate their privileges on the system.
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: 0.005 (38.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Linux Kernel
- Kernel — versions Linux kernel 5.16-rc7
Weakness classification (CWE)
Public proof-of-concept exploits
References
- git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/ (Vendor Advisory)
- packetstormsecurity.com/files/171912/CentOS-Stream-9-Missing-Kernel-Security-Fi… (VDB Entry, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2023/05/msg00006.html (mailing-list, Mailing List, Third Party Advisory)
- security.netapp.com/advisory/ntap-20230526-0009/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2022-4744?
- CVE-2022-4744 is a high-severity vulnerability in Linux Kernel, classified under CWE-460. CVSS score: 7.8/10. Published 2023-03-30.
- How severe is CVE-2022-4744?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2022-4744 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.