CVE-2022-4744: linux linux_kernel Improper Cleanup on Thrown Exception
Vulnerability summary
CVE-2022-4744 is a high (CVSS 7.8) Improper Cleanup on Thrown Exception vulnerability in linux linux_kernel. EPSS estimates a 0.46% chance of exploitation in the next 30 days, higher than 39.8% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 32 · Related 25Timeline
- 30-03-2023PublishedVulnerability first disclosed.
- 14-02-2025Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
5 scores · 5 sources · 1 version- OSV · Red hatEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.46%
Chance of exploitation in the next 30 days
Percentile
40%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.46% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Redhat67 products
- bpftool< 0:5.14.0-70.50.2.el9_0
- bpftool-debuginfo< 0:5.14.0-70.50.2.el9_0
- kernel< 0:5.14.0-70.50.2.el9_0
- kernel-abi-stablelists< 0:5.14.0-70.50.2.el9_0
- kernel-core< 0:5.14.0-70.50.2.el9_0
Ubuntu39 products
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
- linux-aws-5.13All versions (No fix recorded)
- linux-aws-5.3All versions (No fix recorded)
- linux-aws-5.8All versions (No fix recorded)
Debian1 product
- linux< 5.15.15-1
Linux1 product
- linux_kernel≥ 5.5, < 5.10.136 | ≥ 5.11, < 5.15.12
4 vendors · 108 products
References
18 links- git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=158b515f703eARTICLEVendor Advisory
- packetstormsecurity.com/files/171912/CentOS-Stream-9-Missing-Kernel-Security-Fix.htmlThird Party AdvisoryVDB Entry
- security.netapp.com/advisory/ntap-20230526-0009/Third Party Advisory
