A notable vulnerability has been resolved in the Linux kernel, specifically the mm/damon/tests/sysfs-kunit.h, which is related to a memory leak issue found in the damon_sysfs_test_add_targets() function. This vulnerability has been assigned the identifier CVE-2024-50068.

The memory leak occurred mainly due to the sysfs_target->regions not getting properly deallocated in damon_sysfs_test_add_targets(). This issue caused the following memory leak:

unreferenced object xffffff80c2a8db80 (size 96):
  comm "kunit_try_catch", pid 187, jiffies 4294894363
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace (crc ):
    [<0000000001e3714d>] kmemleak_alloc+x34/x40
    [<000000008e6835c1>] __kmalloc_cache_noprof+x26c/x2f4
    [<000000001286d9f8>] damon_sysfs_test_add_targets+x1cc/x738
    [<0000000032ef8f77>] kunit_try_run_case+x13c/x3ac
    [<00000000f3edea23>] kunit_generic_run_threadfn_adapter+x80/xec
    [<00000000adf936cf>] kthread+x2e8/x374
    [<0000000041bb1628>] ret_from_fork+x10/x20

The developers managed to correct the issue by ensuring that the memory allocated to sysfs_target->regions in damon_sysfs_regions_alloc() gets properly freed in damon_sysfs_test_add_targets(). This fix successfully eliminates the memory leak, making the Linux kernel more secure and reliable.

To learn more about the Linux kernel and this specific vulnerability, you can visit the official Linux kernel Git repository. You can also review the relevant code and patches related to CVE-2024-50068 as they become available.

If you are using a Linux-based system, it is crucial to keep your kernel updated and apply security patches regularly to protect your system from potential exploits and vulnerabilities. Regularly visit the official Linux kernel mailing list and related forums to stay informed about the latest developments and fixes.

Timeline

Published on: 10/29/2024 01:15:04 UTC
Last modified on: 10/30/2024 16:57:35 UTC