Answer in brief
CVE-2026-98837 records a Unknown severity vulnerability in ALSA: caiaq: unregister the input device when probe fails. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=6251e3e256337a30160ef59ab1580dde4d1acd28 <850810c12686f80cdf7530f4f21e0157d904f739 || >=e59ecd4ee3a450db6cb4e4ecaa3efdd593f80056 <84727facd8506140cd04f2b0a8b1c4ddeac41cea || >=28abd224db4a49560b452115bca3672a20e45b2f <2e5a413cc2a489c9427ecd3d73ad764bfb0c7103 || >=28abd224db4a49560b452115bca3672a20e45b2f <0b7bd20f6379bc5e431fd74d866390f5b5b63f3c || da938aa9fc7826901921dcea225948ab21a97e45 || 09616e25f502080ba684fc7fcf959d1376ab756d || b956e48371f2ff72b76be9a829800ecec963bd45 || f537e3ad69609f6924a4db6b4a7f6561f5288bdd || 096dd8519cf2f768e9e14f224b627f7aaee1a9c5 || >=6.12.86 <6.12.113 || >=6.18.27 <6.18.56 || >=5.10.258 <5.11 || >=5.15.209 <5.16 || >=6.1.175 <6.2 || >=6.6.140 <6.7 || >=7.0.4 <7.1 | 850810c12686f80cdf7530f4f21e0157d904f739, 84727facd8506140cd04f2b0a8b1c4ddeac41cea, 2e5a413cc2a489c9427ecd3d73ad764bfb0c7103, 0b7bd20f6379bc5e431fd74d866390f5b5b63f3c, 6.12.113, 6.18.56, 5.11, 5.16, 6.2, 6.7, 7.1 |
| Linux/Linuxgeneric | 7.1 | Not reported |
Published upstream
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 18, 2026
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.
Quoted source text, attributed separately from HOL analysis.