CVE-2022-50289
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-15

Last updated on: 2025-12-03

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix memory leak in ocfs2_stack_glue_init() ocfs2_table_header should be free in ocfs2_stack_glue_init() if ocfs2_sysfs_init() failed, otherwise kmemleak will report memleak. BUG: memory leak unreferenced object 0xffff88810eeb5800 (size 128): comm "modprobe", pid 4507, jiffies 4296182506 (age 55.888s) hex dump (first 32 bytes): c0 40 14 a0 ff ff ff ff 00 00 00 00 01 00 00 00 .@.............. 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000001e59e1cd>] __register_sysctl_table+0xca/0xef0 [<00000000c04f70f7>] 0xffffffffa0050037 [<000000001bd12912>] do_one_initcall+0xdb/0x480 [<0000000064f766c9>] do_init_module+0x1cf/0x680 [<000000002ba52db0>] load_module+0x6441/0x6f20 [<000000009772580d>] __do_sys_finit_module+0x12f/0x1c0 [<00000000380c1f22>] do_syscall_64+0x3f/0x90 [<000000004cf473bc>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
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Meta Information
Published
2025-09-15
Last Modified
2025-12-03
Generated
2026-06-16
AI Q&A
2025-09-15
EPSS Evaluated
2026-06-14
NVD
CVE-2022-50289
Affected Vendors & Products
Showing 12 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 2.6.27 (inc) to 4.9.337 (exc)
linux linux_kernel From 4.10 (inc) to 4.14.303 (exc)
linux linux_kernel From 4.15 (inc) to 4.19.270 (exc)
linux linux_kernel From 4.20 (inc) to 5.4.229 (exc)
linux linux_kernel From 5.5 (inc) to 5.10.163 (exc)
linux linux_kernel From 5.11 (inc) to 5.15.86 (exc)
linux linux_kernel From 5.16 (inc) to 6.0.16 (exc)
linux linux_kernel From 6.1 (inc) to 6.1.2 (exc)
linux linux_kernel 2.6.26
linux linux_kernel 2.6.26
linux linux_kernel 2.6.26
linux linux_kernel 2.6.26
Helpful Resources
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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Impact Analysis

The impact of this vulnerability is a memory leak in the Linux kernel, which can lead to increased memory usage and potentially degrade system performance or stability over time if the leak accumulates.

Executive Summary

This vulnerability is a memory leak in the Linux kernel's ocfs2 module. Specifically, the ocfs2_stack_glue_init() function does not free the ocfs2_table_header if ocfs2_sysfs_init() fails, causing a memory leak that is detected by kmemleak.

Detection Guidance

This vulnerability involves a memory leak in the Linux kernel's ocfs2_stack_glue_init() function when ocfs2_sysfs_init() fails. Detection can be done by monitoring kernel memory leak reports, specifically looking for kmemleak reports indicating unreferenced objects related to ocfs2. You can enable and check kmemleak reports using the following commands: 1. Enable kmemleak (if not already enabled): echo scan > /sys/kernel/debug/kmemleak 2. Check kmemleak reports: cat /sys/kernel/debug/kmemleak Look for entries mentioning ocfs2 or related memory leaks. Additionally, reviewing kernel logs (dmesg) for memory leak warnings or modprobe related errors may help detect this issue.

Mitigation Strategies

To mitigate this vulnerability, update your Linux kernel to a version where the ocfs2 memory leak in ocfs2_stack_glue_init() has been fixed. This patch ensures that ocfs2_table_header is properly freed if ocfs2_sysfs_init() fails, preventing the memory leak. Until the update is applied, monitor kmemleak reports and avoid triggering ocfs2_sysfs_init() failures if possible.

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