ALSA: usb: 6fire: Avoid embedded URBs
Summary
| CVE | CVE-2026-98428 |
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| State | PUBLISHED |
|---|
| Assigner | Linux |
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| Source Priority | CVE Program / NVD first with legacy fallback |
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| Published | 2026-10-14 14:17:54 UTC |
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| Updated | 2026-10-26 07:17:10 UTC |
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| Description | In the Linux kernel, the following vulnerability has been resolved:
ALSA: usb: 6fire: Avoid embedded URBs
The USB 6fire driver uses URBs embedded in different structs for PCM,
MIDI and communication, and this is basically a buggy implementation
nowadays; since a URB is managed with a refcount, this may lead to a
UAF when the URB is released asynchronously.
For addressing the problem, this patch converts those embedded URBs to
ones that are properly allocated via usb_alloc_urb(). The
pcm_urb.packets[] is gone, as it's allocated by usb_alloc_urb(), hence
it's found in urb.iso_frame_desc[] instead.
The conversions are rather straightforward; each embedded struct urb
is changed to a pointer, and its callers are updated accordingly.
The resource for those structs are released in the common destructor
functions (usb6fire_comm_free(), etc), which are called at both the
init error path and the disconnect.
No functional changes, only compile-tested. |
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Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|
| CNA |
Linux |
Linux |
affected c6d43ba816d1cf1d125bfbfc938f2a28a87facf9 3ef9093d83ffecb8e5f6c9d5769a52d39df74f7a git |
Not specified |
| CNA |
Linux |
Linux |
affected c6d43ba816d1cf1d125bfbfc938f2a28a87facf9 8b8559aeaba2e51cfee1779b2383b085991f7d81 git |
Not specified |
| CNA |
Linux |
Linux |
affected c6d43ba816d1cf1d125bfbfc938f2a28a87facf9 52a43c2d57e774489ac3fbbac06ff02f19bd9a52 git |
Not specified |
| CNA |
Linux |
Linux |
affected c6d43ba816d1cf1d125bfbfc938f2a28a87facf9 999f433c09e4668412bd68ca207ae2b4af863862 git |
Not specified |
| CNA |
Linux |
Linux |
affected c6d43ba816d1cf1d125bfbfc938f2a28a87facf9 d181434549b3da668110a25d743848cce9897f4e git |
Not specified |
| CNA |
Linux |
Linux |
affected c6d43ba816d1cf1d125bfbfc938f2a28a87facf9 9fe49dbc023e82dfaee7b245997d820d01742a9a git |
Not specified |
| CNA |
Linux |
Linux |
affected 2.6.39 |
Not specified |
| CNA |
Linux |
Linux |
unaffected 2.6.39 semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.1.189 6.1.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.6.158 6.6.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.12.112 6.12.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.18.54 6.18.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 7.2.8 7.2.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 7.3 * original_commit_for_fix |
Not specified |
References
| Reference | Source | Link | Tags |
|---|
| git.kernel.org/stable/c/9fe49dbc023e82dfaee7b245997d820d01742a9a |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/d181434549b3da668110a25d743848cce9897f4e |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/999f433c09e4668412bd68ca207ae2b4af863862 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/3ef9093d83ffecb8e5f6c9d5769a52d39df74f7a |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/52a43c2d57e774489ac3fbbac06ff02f19bd9a52 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/8b8559aeaba2e51cfee1779b2383b085991f7d81 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| CVE Program record |
CVE.ORG |
www.cve.org |
canonical |
| NVD vulnerability detail |
NVD |
nvd.nist.gov |
canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.