CVE-2026-23145
Unknown Unknown - Not Provided
Reference Count Leak in Linux Kernel ext4 xattr Handling

Publication date: 2026-02-14

Last updated on: 2026-03-17

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: ext4: fix iloc.bh leak in ext4_xattr_inode_update_ref The error branch for ext4_xattr_inode_update_ref forget to release the refcount for iloc.bh. Find this when review code.
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Meta Information
Published
2026-02-14
Last Modified
2026-03-17
Generated
2026-06-16
AI Q&A
2026-02-14
EPSS Evaluated
2026-06-15
NVD
EUVD
Affected Vendors & Products
Showing 12 associated CPEs
Vendor Product Version / Range
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel From 5.10.246 (inc) to 5.10.249 (exc)
linux linux_kernel From 5.15.195 (inc) to 5.15.199 (exc)
linux linux_kernel From 5.4.301 (inc) to 5.5 (exc)
linux linux_kernel From 6.1.157 (inc) to 6.1.162 (exc)
linux linux_kernel From 6.12.54 (inc) to 6.12.67 (exc)
linux linux_kernel From 6.17.4 (inc) to 6.18.7 (exc)
linux linux_kernel From 6.6.113 (inc) to 6.6.122 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-401 The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.
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Executive Summary

This vulnerability is related to the Linux kernel's ext4 filesystem. Specifically, there was a bug in the ext4_xattr_inode_update_ref function where an error branch failed to release a reference count for iloc.bh, causing a resource leak.

Impact Analysis

The vulnerability causes a leak of a reference count in the ext4 filesystem code. While the exact impact is not detailed, such leaks can lead to resource exhaustion or instability in the filesystem over time.

Compliance Impact

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Detection Guidance

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Mitigation Strategies

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