CVE-2026-98837
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
ALSA: caiaq: unregister the input device when probe fails
In the Linux kernel, the following vulnerability has been resolved: ALSA: caiaq: unregister the input device when probe fails setup_card() registers the input device, whose name and phys point into struct snd_usb_caiaqdev, and then goes on to snd_card_register() and snd_usb_caiaq_control_init(). If either fails, snd_probe() calls snd_card_free(), which frees the device state but leaves the input device registered: card_free() only clears the pointer, and the input device is unregistered from snd_disconnect() alone. Reading its "uevent" attribute afterwards dereferences freed memory: BUG: KASAN: slab-use-after-free in string+0x4a9/0x4f0 Read of size 1 at addr ffff8880208f5043 by task caiaq/4967 add_uevent_var+0x183/0x3a0 input_dev_uevent+0x162/0x900 dev_uevent+0x2f1/0x870 uevent_show+0x1ca/0x3a0 ... Unregister the input device on the probe error path, as snd_disconnect() does. snd_usb_caiaq_input_disconnect() is a no-op when no input device was registered. Reproduced with a raw-gadget Audio Kontrol 1 and a temporary hack that makes snd_usb_caiaq_control_init() fail.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| f537e3ad69609f6924a4db6b4a7f6561f5288bdd | affected | git | df2787819bd137111b56b8631dd581b0cce7144d | Unavailable | None listed |
| 6251e3e256337a30160ef59ab1580dde4d1acd28 | affected | git | 850810c12686f80cdf7530f4f21e0157d904f739 | Unavailable | None listed |
| e59ecd4ee3a450db6cb4e4ecaa3efdd593f80056 | affected | git | 84727facd8506140cd04f2b0a8b1c4ddeac41cea | Unavailable | None listed |
| 28abd224db4a49560b452115bca3672a20e45b2f | affected | git | 2e5a413cc2a489c9427ecd3d73ad764bfb0c7103 | Unavailable | None listed |
| 28abd224db4a49560b452115bca3672a20e45b2f | affected | git | 0b7bd20f6379bc5e431fd74d866390f5b5b63f3c | Unavailable | None listed |
| da938aa9fc7826901921dcea225948ab21a97e45 | affected | git | Unavailable | Unavailable | None listed |
| 09616e25f502080ba684fc7fcf959d1376ab756d | affected | git | Unavailable | Unavailable | None listed |
| b956e48371f2ff72b76be9a829800ecec963bd45 | affected | git | Unavailable | Unavailable | None listed |
| 096dd8519cf2f768e9e14f224b627f7aaee1a9c5 | affected | git | Unavailable | Unavailable | None listed |
| 6.6.140 | affected | semver | 6.6.160 | Unavailable | None listed |
| 6.12.86 | affected | semver | 6.12.113 | Unavailable | None listed |
| 6.18.27 | affected | semver | 6.18.56 | Unavailable | None listed |
| 5.10.258 | affected | semver | 5.11 | Unavailable | None listed |
| 5.15.209 | affected | semver | 5.16 | Unavailable | None listed |
| 6.1.175 | affected | semver | 6.2 | Unavailable | None listed |
| 7.0.4 | affected | semver | 7.1 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 7.1 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 7.1 | Unavailable | None listed |
| 6.6.160 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.113 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.56 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.10 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |