In the Linux kernel, the following vulnerability has been resolved: btrfs: fix memory leak in btrfs_do_encoded_write() Local fuzzing of 6.12.94 has… (CVE-2026-74722)
A memory leak vulnerability in the Linux kernel's Btrfs filesystem code was identified and fixed. The issue occurs in the btrfs_do_encoded_write() function, where an extent changeset was not properly freed, leading to unreferenced memory objects. This flaw was discovered through local fuzzing of kernel version 6.12.94. The fix involves freeing the extent changeset before returning from the affected function.
AI Analysis
Technical Summary
The vulnerability CVE-2026-74722 in the Linux kernel affects the Btrfs filesystem implementation. Local fuzzing of kernel version 6.12.94 revealed a memory leak in the btrfs_do_encoded_write() function caused by failure to free an extent changeset before returning. This results in unreferenced memory objects accumulating, which could degrade system performance or stability over time. The issue was resolved by ensuring the extent changeset is freed properly in the function's control flow.
Potential Impact
The impact of this vulnerability is a memory leak within the kernel's Btrfs filesystem code. While it does not directly indicate code execution or privilege escalation, the leak could lead to resource exhaustion and potential system instability if exploited repeatedly. There is no evidence of active exploitation in the wild.
Mitigation Recommendations
A fix for this memory leak has been implemented in the Linux kernel source code. Users should update to a kernel version that includes this fix. Since no specific patch links or vendor advisories are provided, verify with the official Linux kernel release notes or trusted sources for the fixed version. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix memory leak in btrfs_do_encoded_write() Local fuzzing of 6.12.94 has… (CVE-2026-74722)
Description
A memory leak vulnerability in the Linux kernel's Btrfs filesystem code was identified and fixed. The issue occurs in the btrfs_do_encoded_write() function, where an extent changeset was not properly freed, leading to unreferenced memory objects. This flaw was discovered through local fuzzing of kernel version 6.12.94. The fix involves freeing the extent changeset before returning from the affected function.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-74722 in the Linux kernel affects the Btrfs filesystem implementation. Local fuzzing of kernel version 6.12.94 revealed a memory leak in the btrfs_do_encoded_write() function caused by failure to free an extent changeset before returning. This results in unreferenced memory objects accumulating, which could degrade system performance or stability over time. The issue was resolved by ensuring the extent changeset is freed properly in the function's control flow.
Potential Impact
The impact of this vulnerability is a memory leak within the kernel's Btrfs filesystem code. While it does not directly indicate code execution or privilege escalation, the leak could lead to resource exhaustion and potential system instability if exploited repeatedly. There is no evidence of active exploitation in the wild.
Mitigation Recommendations
A fix for this memory leak has been implemented in the Linux kernel source code. Users should update to a kernel version that includes this fix. Since no specific patch links or vendor advisories are provided, verify with the official Linux kernel release notes or trusted sources for the fixed version. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-424m-4r3p-f43g
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-74722"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a8a27f0acd9273b499bc718
Added to database: 08/22/2026, 22:51:28 UTC
Last enriched: 08/23/2026, 00:39:16 UTC
Last updated: 08/23/2026, 02:12:14 UTC
Views: 3
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