CVE-2026-100082
xen-blkback: Avoid UAF when reading I/O statistics
Description
In the Linux kernel, the following vulnerability has been resolved: xen-blkback: Avoid UAF when reading I/O statistics Reading I/O statistics via sysfs concurrently with tearing down a frontend device might result in UAF or a NULL dereference, as the reading of the statistics data is not synchronized with freeing the data. Use a rwlock for synchronizing. This is XSA-528 / CVE-2026-100082
INFO
Published Date :
Nov. 6, 2026, 7:17 p.m.
Last Modified :
Nov. 6, 2026, 7:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Apply the kernel patch that introduces rwlock synchronization.
- Update the Linux kernel to a patched version.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-100082.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-100082 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-100082
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-100082 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-100082 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Nov. 06, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: xen-blkback: Avoid UAF when reading I/O statistics Reading I/O statistics via sysfs concurrently with tearing down a frontend device might result in UAF or a NULL dereference, as the reading of the statistics data is not synchronized with freeing the data. Use a rwlock for synchronizing. This is XSA-528 / CVE-2026-100082 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/100xxx/CVE-2026-100082.json">CVE-2026-100082</a> Added Reference https://git.kernel.org/stable/c/253cff0526781e28b1b0f9fdacd74ecdc23d3ab7 Added Reference https://git.kernel.org/stable/c/2c9ccbe0ffcff3615c7ad917c49b67571a41f21c Added Reference https://git.kernel.org/stable/c/58ba056991dbcec8a75e6861cb4479ac947b69e6 Added Reference https://git.kernel.org/stable/c/b0378161c28e77e4d0e2eda3c9433ab4394d2a2f Added Reference https://git.kernel.org/stable/c/b764e17313534794aeb99c901869f213e36a16ef Added Reference https://git.kernel.org/stable/c/c49934da934cf495faf782aa5d84f413221c9be6 Added Reference https://git.kernel.org/stable/c/fe9ead8c5bdb752e329cecfecbdb5dfca5e9996b -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 06, 2026
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2026/11/06/11 Added Reference http://xenbits.xen.org/xsa/advisory-528.html