CVE-2024-44954
Published: September 5, 2024Last modified: September 5, 2024
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: line6: Fix racy access to midibuf There can be concurrent accesses to line6 midibuf from both the URB completion callback and the rawmidi API access. This could be a cause of KMSAN warning triggered by syzkaller below (so put as reported-by here). This patch protects the midibuf call of the former code path with a spinlock for avoiding the possible races.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 4.7 |
| Attack Vector | LOCAL |
| Attack complexity | HIGH |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.106-r0) |
| Stream | linux-lts | Fixed (6.6.58-r0) |
References
- https://git.kernel.org/stable/c/15b7a03205b31bc5623378c190d22b7ff60026f1
- https://git.kernel.org/stable/c/40f3d5cb0e0cbf7fa697913a27d5d361373bdcf5
- https://git.kernel.org/stable/c/51d87f11dd199bbc6a85982b088ff27bde53b48a
- https://git.kernel.org/stable/c/535df7f896a568a8a1564114eaea49d002cb1747
- https://git.kernel.org/stable/c/643293b68fbb6c03f5e907736498da17d43f0d81
- https://git.kernel.org/stable/c/a54da4b787dcac60b598da69c9c0072812b8282d
- https://git.kernel.org/stable/c/c80f454a805443c274394b1db0d1ebf477abd94e
- https://git.kernel.org/stable/c/e7e7d2b180d8f297cea6db43ea72402fd33e1a29