CVE-2026-23021: net: usb: pegasus: fix memory leak in update_eth_regs_async()
Modified
AliasesUBUNTU-CVE-2026-23021DEBIAN-CVE-2026-23021
Published 31-01-2026Last modified 19-10-2026
Vulnerability summary
CVE-2026-23021 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 6.6% of scored vulnerabilities.
CVSS score
5.5/10
010
Medium · v3.1 (NVD)EPSS score
0.18%
0%100%
Low · +0.02 pp in 30 daysKEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 41 · Related 35DLA-4475-1DLA-4476-1DSA-6126-1DSA-6127-1MGASA-2026-0097MGASA-2026-0098OPENSUSE-SU-2026:20416-1SUSE-SU-2026:0962-1SUSE-SU-2026:1081-1SUSE-SU-2026:20667-1SUSE-SU-2026:20720-1SUSE-SU-2026:20838-1SUSE-SU-2026:20845-1SUSE-SU-2026:20873-1SUSE-SU-2026:20876-1SUSE-SU-2026:20931-1USN-8096-1USN-8096-2USN-8096-3USN-8096-4USN-8096-5USN-8116-1USN-8141-1USN-8163-1USN-8163-2USN-8243-1USN-8278-1USN-8278-2USN-8289-1USN-8289-2USN-8296-1USN-8296-2USN-8393-1USN-8440-1USN-8499-1USN-8570-1USN-8570-2USN-8594-1USN-8604-1USN-8605-1USN-8669-1
Timeline
- 31-01-2026PublishedVulnerability first disclosed.
- 19-10-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: net: usb: pegasus: fix memory leak in update_eth_regs_async() When asynchronously writing to the device registers and if usb_submit_urb() fail, the code fail to release allocated to this point resources.
CVSS metrics
3 scores · 3 sources · 1 versionMedium 5.5Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.18%
Chance of exploitation in the next 30 days
Percentile
7%
Versus all other CVEs
30-day change
Increase +0.02 pp
From 0.16% on 22-09-2026
22-09-202622-10-2026
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
Ubuntu156 products
- linuxAll versions (No fix recorded) | < 5.15.0-173.183 | < 6.8.0-117.117
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.15.0-1103.110 | < 6.8.0-1055.58
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 323b34963d113efb566635f43858f40cce01d5f9, < 5397ea6d21c35a17707e201a60761bdee00bcc4e | ≥ 323b34963d113efb566635f43858f40cce01d5f9, < a40af9a2904a1ab8ce61866ebe2a894ef30754ba | ≥ 323b34963d113efb566635f43858f40cce01d5f9, < ac5d92d2826dec51e5d4c6854865bc5817277452 | ≥ 323b34963d113efb566635f43858f40cce01d5f9, < 93f18eaa190374e0f2d253e3b1a65cee19a7abe6 | ≥ 323b34963d113efb566635f43858f40cce01d5f9, < 471dfb97599eec74e0476046b3ef8e7037f27b34 | ≥ 323b34963d113efb566635f43858f40cce01d5f9, < ce6eef731aba23a988decea1df3b08cf978f7b01 | ≥ 323b34963d113efb566635f43858f40cce01d5f9, < afa27621a28af317523e0836dad430bec551eb54 | 3.10
- linux_kernel≥ 3.10.1, < 5.10.248 | ≥ 5.11, < 5.15.198 | ≥ 5.16, < 6.1.161 | ≥ 6.2, < 6.6.121 | ≥ 6.7, < 6.12.66 | ≥ 6.13, < 6.18.6 | 3.10 | 6.19:rc1 | 6.19:rc2 | 6.19:rc3 | 6.19:rc4 | 6.19:rc5 | 6.19:rc6 | 6.19:rc7 | 6.19:rc8
Debian1 product
- linux< 6.1.162-1 | < 6.12.69-1 | < 6.18.8-1
3 vendors · 159 products
