usb: gadget: midi2: remove default configfs groups on teardown
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.6.157, 6.12.109, 6.18.50, 7.2.4
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: midi2: remove default configfs groups on teardown f_midi2_alloc_inst() creates default configfs child groups for the default endpoint and default block using configfs_add_default_group(), setting their internal refcount to 1. However, during function teardown in f_midi2_free_inst() or EP cleanup in f_midi2_ep_opts_release(), configfs_remove_default_groups() is never called, therefore never dropping the refcount and leaking struct f_midi2_ep_opts and f_midi2_block_opts. Add the missing configfs_remove_default_groups() in the afformentioned functions to free the structs properly.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From 8b645922b22303cec4628dbbbf6c8553d1cdec87 · fixed in 79dbedf40ad930f83839e564394dc5d1a54938c6; From 8b645922b22303cec4628dbbbf6c8553d1cdec87 · fixed in 4beda67ee72e0c8df5b49951dd8b96f6adb25e02; From 8b645922b22303cec4628dbbbf6c8553d1cdec87 · fixed in a15c2acd3083461f91725760e59dff88b33c28f6; From 8b645922b22303cec4628dbbbf6c8553d1cdec87 · fixed in 9ea5dfb2bfef4f8a7e704d1921d8a790cb7fb700; From 8b645922b22303cec4628dbbbf6c8553d1cdec87 · fixed in 0f6bffb5008f0cba9cad5ded2caccc64466a6e54
- Linux Linux
6.6
- KernelLinux
From 6.6.0 · fixed in 6.6.157; From 6.7.0 · fixed in 6.12.109; From 6.13.0 · fixed in 6.18.50; From 6.19.0 · fixed in 7.2.4