CVE-2026-63927: linux Use After Free

CVSS: 7.8v3.1HighAwaiting analysis

AliasesUBUNTU-CVE-2026-63927DEBIAN-CVE-2026-63927

Published 19-07-2026Last modified 19-10-2026

Vulnerability summary

CVE-2026-63927 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5.2% of scored vulnerabilities.

Overall risk

31/100

0100

Medium · default modelHow is this calculated?

CVSS score

7.8/10

010

High · v3.1 (CVE.org)

EPSS score

0.16%

0%100%

Low · 0.00 pp in 30 days

KEVNot listedIn no KEV catalog

RansomwareNone recordedNo known use recorded

Public exploits0No public exploits recorded

Timeline

19-07-2026
PublishedVulnerability first disclosed.
19-10-2026
Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: usb: dwc2: Fix use after free in debug code We're not allowed to dereference "urb" after calling usb_hcd_giveback_urb() so save the urb->status ahead of time.

CVSS metrics

4 scores · 4 sources · 1 version

v3.17.8

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

Versus all other CVEs

30-day change

0.00 pp

From 0.16% on 20-09-2026

20-09-202620-10-2026

EPSS score

0.16%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected systems

Ubuntu167 products

linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 6.8.0-146.146 | < 7.0.0-28.28
linux-allwinner-5.19All versions (No fix recorded)
linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 6.8.0-1066.69 | < 7.0.0-1009.9
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-5.15< 5.15.0-1117.124~20.04.1
linux-aws-5.19All versions (No fix recorded)
linux-aws-5.3All versions (No fix recorded)
linux-aws-5.4All versions (No fix recorded)
linux-aws-5.8All versions (No fix recorded)
linux-aws-6.14All versions (No fix recorded)
linux-aws-6.17All versions (No fix recorded)
linux-aws-6.2All versions (No fix recorded)
linux-aws-6.5All versions (No fix recorded)
linux-aws-6.8< 6.8.0-1066.69~22.04.1
linux-aws-fipsAll versions (No fix recorded) | < 5.15.0-1117.124+fips1 | < 6.8.0-1066.69+fips1
linux-aws-hweAll versions (No fix recorded)
linux-azureAll versions (No fix recorded) | < 5.15.0-1123.132 | < 6.8.0-1070.78 | < 7.0.0-1010.10
linux-azure-4.15All versions (No fix recorded)
linux-azure-5.11All versions (No fix recorded)
linux-azure-5.13All versions (No fix recorded)
linux-azure-5.15< 5.15.0-1123.132~20.04.1
linux-azure-5.19All versions (No fix recorded)
linux-azure-5.3All versions (No fix recorded)
linux-azure-5.4All versions (No fix recorded)
linux-azure-5.8All versions (No fix recorded)
linux-azure-6.11All versions (No fix recorded)
linux-azure-6.14All versions (No fix recorded)
linux-azure-6.17All versions (No fix recorded)
linux-azure-6.2All versions (No fix recorded)
linux-azure-6.5All versions (No fix recorded)
linux-azure-6.8< 6.8.0-1070.78~22.04.1
linux-azure-7.0< 7.0.0-1014.14~24.04.1
linux-azure-edgeAll versions (No fix recorded)
linux-azure-fdeAll versions (No fix recorded) | < 6.8.0-1068.75 | < 7.0.0-1009.9
linux-azure-fde-5.15< 5.15.0-1122.131~20.04.1
linux-azure-fde-5.19All versions (No fix recorded)
linux-azure-fde-6.14All versions (No fix recorded)
linux-azure-fde-6.17All versions (No fix recorded)
linux-azure-fde-6.2All versions (No fix recorded)
linux-azure-fde-6.8< 6.8.0-1068.75~22.04.1
linux-azure-fde-7.0All versions (No fix recorded)
linux-azure-fipsAll versions (No fix recorded) | < 5.15.0-1123.132+fips1 | < 6.8.0-1069.77+fips1
linux-azure-nvidiaAll versions (No fix recorded)
linux-azure-nvidia-6.14All versions (No fix recorded)
linux-bluefieldAll versions (No fix recorded) | < 5.15.0-1101.103 | < 6.8.0-1032.37
linux-fipsAll versions (No fix recorded) | < 5.15.0-198.208+fips1 | < 6.8.0-146.146+fips1
linux-gcpAll versions (No fix recorded) | < 5.15.0-1118.128 | < 6.8.0-1070.78 | < 7.0.0-1008.8
linux-gcp-4.15All versions (No fix recorded)
linux-gcp-5.11All versions (No fix recorded)
linux-gcp-5.13All versions (No fix recorded)
linux-gcp-5.15< 5.15.0-1118.128~20.04.1
linux-gcp-5.19All versions (No fix recorded)
linux-gcp-5.3All versions (No fix recorded)
linux-gcp-5.4All versions (No fix recorded)
linux-gcp-5.8All versions (No fix recorded)
linux-gcp-6.11All versions (No fix recorded)
linux-gcp-6.14All versions (No fix recorded)
linux-gcp-6.17All versions (No fix recorded)
linux-gcp-6.2All versions (No fix recorded)
linux-gcp-6.5All versions (No fix recorded)
linux-gcp-6.8< 6.8.0-1070.78~22.04.1
linux-gcp-7.0< 7.0.0-1011.11~24.04.1
linux-gcp-fipsAll versions (No fix recorded) | < 5.15.0-1118.128+fips1 | < 6.8.0-1070.78+fips1
linux-gkeAll versions (No fix recorded) | < 5.15.0-1113.119 | < 6.8.0-1065.73 | < 7.0.0-1003.4
linux-gke-4.15All versions (No fix recorded)
linux-gke-5.15All versions (No fix recorded)
linux-gke-5.4All versions (No fix recorded)
linux-gkeopAll versions (No fix recorded) | < 5.15.0-1100.108 | < 6.8.0-1051.55
linux-gkeop-5.15All versions (No fix recorded)
linux-gkeop-5.4All versions (No fix recorded)
linux-hweAll versions (No fix recorded)
linux-hwe-5.11All versions (No fix recorded)
linux-hwe-5.13All versions (No fix recorded)
linux-hwe-5.15< 5.15.0-198.208~20.04.1
linux-hwe-5.19All versions (No fix recorded)
linux-hwe-5.4All versions (No fix recorded)
linux-hwe-5.8All versions (No fix recorded)
linux-hwe-6.11All versions (No fix recorded)
linux-hwe-6.14All versions (No fix recorded)
linux-hwe-6.17All versions (No fix recorded)
linux-hwe-6.2All versions (No fix recorded)
linux-hwe-6.5All versions (No fix recorded)
linux-hwe-6.8All versions (No fix recorded)
linux-hwe-7.0< 7.0.0-28.28~24.04.1
linux-hwe-edgeAll versions (No fix recorded)
linux-ibmAll versions (No fix recorded) | < 5.15.0-1111.115 | < 6.8.0-1066.67 | < 7.0.0-1010.10
linux-ibm-5.15< 5.15.0-1111.115~20.04.1
linux-ibm-5.4All versions (No fix recorded)
linux-ibm-6.8< 6.8.0-1066.67~22.04.1
linux-intel-5.13All versions (No fix recorded)
linux-intel-iot-realtimeAll versions (No fix recorded) | < 5.15.0-1109.111
linux-intel-iotg< 5.15.0-1112.118
linux-intel-iotg-5.15< 5.15.0-1112.118~20.04.1
linux-iotAll versions (No fix recorded)
linux-kvmAll versions (No fix recorded) | < 5.15.0-1109.114
linux-lowlatency< 5.15.0-195.205 | < 6.8.0-146.146.1
linux-lowlatency-hwe-5.15< 5.15.0-195.205~20.04.1
linux-lowlatency-hwe-5.19All versions (No fix recorded)
linux-lowlatency-hwe-6.11All versions (No fix recorded)
linux-lowlatency-hwe-6.2All versions (No fix recorded)
linux-lowlatency-hwe-6.5All versions (No fix recorded)
linux-lowlatency-hwe-6.8< 6.8.0-146.146.1~22.04.1
linux-lts-xenialAll versions (No fix recorded)
linux-nvidia< 5.15.0-1112.113 | < 6.8.0-1064.67 | < 7.0.0-1016.16
linux-nvidia-6.11All versions (No fix recorded)
linux-nvidia-6.17All versions (No fix recorded)
linux-nvidia-6.2All versions (No fix recorded)
linux-nvidia-6.5All versions (No fix recorded)
linux-nvidia-6.8< 6.8.0-1064.67~22.04.1
linux-nvidia-7.0< 7.0.0-1016.16~24.04.1
linux-nvidia-bos< 7.0.0-2016.16
linux-nvidia-lowlatency< 6.8.0-1064.67.1
linux-nvidia-tegraAll versions (No fix recorded) | < 6.8.0-1036.39
linux-nvidia-tegra-5.15All versions (No fix recorded)
linux-nvidia-tegra-igxAll versions (No fix recorded)
linux-oemAll versions (No fix recorded)
linux-oem-5.10All versions (No fix recorded)
linux-oem-5.13All versions (No fix recorded)
linux-oem-5.14All versions (No fix recorded)
linux-oem-5.17All versions (No fix recorded)
linux-oem-5.6All versions (No fix recorded)
linux-oem-6.0All versions (No fix recorded)
linux-oem-6.1All versions (No fix recorded)
linux-oem-6.11All versions (No fix recorded)
linux-oem-6.14All versions (No fix recorded)
linux-oem-6.17All versions (No fix recorded)
linux-oem-6.5All versions (No fix recorded)
linux-oem-6.8All versions (No fix recorded)
linux-oem-7.0< 7.0.0-1009.9
linux-oracleAll versions (No fix recorded) | < 5.15.0-1114.120 | < 6.8.0-1063.66 | < 7.0.0-1008.8
linux-oracle-5.0All versions (No fix recorded)
linux-oracle-5.11All versions (No fix recorded)
linux-oracle-5.13All versions (No fix recorded)
linux-oracle-5.15< 5.15.0-1114.120~20.04.1
linux-oracle-5.3All versions (No fix recorded)
linux-oracle-5.4All versions (No fix recorded)
linux-oracle-5.8All versions (No fix recorded)
linux-oracle-6.14All versions (No fix recorded)
linux-oracle-6.17All versions (No fix recorded)
linux-oracle-6.5All versions (No fix recorded)
linux-oracle-6.8All versions (No fix recorded)
linux-oracle-7.0< 7.0.0-1011.11~24.04.1
linux-raspiAll versions (No fix recorded) | < 7.0.0-1015.15
linux-raspi-5.4All versions (No fix recorded)
linux-raspi-realtimeAll versions (No fix recorded)
linux-raspi2All versions (No fix recorded)
linux-realtimeAll versions (No fix recorded) | < 5.15.0-1116.125 | < 6.8.1-1061.62 | < 7.0.0-28.28.1
linux-realtime-6.14All versions (No fix recorded)
linux-realtime-6.17All versions (No fix recorded)
linux-realtime-6.8< 6.8.1-1061.62~22.04.1
linux-riscvAll versions (No fix recorded) | < 7.0.0-28.28.1
linux-riscv-5.11All versions (No fix recorded)
linux-riscv-5.15< 5.15.0-1111.115~20.04.1
linux-riscv-5.19All versions (No fix recorded)
linux-riscv-5.8All versions (No fix recorded)
linux-riscv-6.14All versions (No fix recorded)
linux-riscv-6.17All versions (No fix recorded)
linux-riscv-6.5All versions (No fix recorded)
linux-riscv-6.8< 6.8.0-146.146~22.04.1
linux-riscv-7.0< 7.0.0-28.28.1~24.04.3
linux-starfive-5.19All versions (No fix recorded)
linux-starfive-6.2All versions (No fix recorded)
linux-starfive-6.5All versions (No fix recorded)
linux-xilinxAll versions (No fix recorded)
linux-xilinx-zynqmpAll versions (No fix recorded) | < 5.15.0-1080.84

Show all 167

Debian1 product

linux< 6.1.176-1 | < 6.12.94-1 | < 7.0.12-1

Linux1 product

linux≥ 7359d482eb4d3967cc8be354405ae6be6eaf732c, < d5fc183ed614aeba6779cc992325be560f9a4451 | ≥ 7359d482eb4d3967cc8be354405ae6be6eaf732c, < 63b0dafa676aad4d0c3f01a61ad8e2990907660c | ≥ 7359d482eb4d3967cc8be354405ae6be6eaf732c, < 9fe1d84f7e2cf33634e8afb7f4b7f8de182dd913 | ≥ 7359d482eb4d3967cc8be354405ae6be6eaf732c, < 0584af4fe40fa5e254a05d69ce658746de641708 | ≥ 7359d482eb4d3967cc8be354405ae6be6eaf732c, < a15eeeceb94cbc04edef395e4d777ff554bdc27d | ≥ 7359d482eb4d3967cc8be354405ae6be6eaf732c, < 84ea928ed584756e59c6ac09736f12d1db95ded0 | ≥ 7359d482eb4d3967cc8be354405ae6be6eaf732c, < 6d0b79d1d1118145e48a68192b6d733e39387053 | ≥ 7359d482eb4d3967cc8be354405ae6be6eaf732c, < 9ea06a3fbf9f16e0d98c52cb3b99642be15ec281 | 3.10

3 vendors · 169 products

References

32 links

Show all 32 references

git.kernel.org/linus/9ea06a3fbf9f16e0d98c52cb3b99642be15ec281REPORT
ubuntu.com/security/notices/USN-8593-1Advisory
ubuntu.com/security/notices/USN-8603-1Advisory
ubuntu.com/security/notices/USN-8618-1Advisory
ubuntu.com/security/notices/USN-8663-1Advisory
ubuntu.com/security/notices/USN-8664-1Advisory
ubuntu.com/security/notices/USN-8728-1Advisory
ubuntu.com/security/notices/USN-8728-2Advisory
ubuntu.com/security/notices/USN-8728-3Advisory
ubuntu.com/security/notices/USN-8878-1Advisory
ubuntu.com/security/notices/USN-8879-1Advisory
ubuntu.com/security/notices/USN-8877-1Advisory
ubuntu.com/security/notices/USN-8875-1Advisory
ubuntu.com/security/notices/USN-8886-1Advisory
ubuntu.com/security/notices/USN-8903-1Advisory
ubuntu.com/security/notices/USN-8905-1Advisory
ubuntu.com/security/notices/USN-8906-1Advisory
ubuntu.com/security/notices/USN-8904-1Advisory
ubuntu.com/security/notices/USN-8903-2Advisory
ubuntu.com/security/notices/USN-8875-2Advisory
ubuntu.com/security/notices/USN-8905-2Advisory
security-tracker.debian.org/tracker/CVE-2026-63927Advisory

Vulnerability summary

Advisory lineage

Timeline

Description

CVSS metrics

EPSS trend

Known exploited

Public exploits

Weaknesses

Affected systems

References

Related vulnerabilities