CVE-2026-68466
Published: August 18, 2026Last modified: August 18, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: mtd: rawnand: lpc32xx_slc: fail DMA transfer on completion timeout lpc32xx_xmit_dma() waits for the DMA completion callback but ignores wait_for_completion_timeout(). A timed out DMA transfer is therefore unmapped and reported as successful to the NAND read/write path. Return -ETIMEDOUT when the completion wait expires. Terminate the DMA channel before unmapping the scatterlist so the timed out transfer cannot continue to access the buffer after the error is returned.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.8 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | CHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.182-r0) |
| 25 LTS | linux-lts | Fixed (6.12.103-r0) | |
| Stream | linux-lts | Fixed (6.18.43-r0) |
References
- https://git.kernel.org/stable/c/17a8ce84964f243c8f89dc7353ac7e8d3137bc74
- https://git.kernel.org/stable/c/307e4f4c1d4e1575b3495ecc6e41aa2adc40f491
- https://git.kernel.org/stable/c/623c4d8e740debb4af28981e3d4e209f9d0260a4
- https://git.kernel.org/stable/c/8f5c3ee53a5dc1a0f7cfd780485f2c8b5d17f91d
- https://git.kernel.org/stable/c/bd4a622786f92e1f183f7557ab89dd32891cef60
- https://git.kernel.org/stable/c/c367af37ce7238c96c6071337149099467160746
- https://git.kernel.org/stable/c/cb2031f8b226efbd13735c07b075e5f14ec11f6d
- https://git.kernel.org/stable/c/cf7258f57d18026b8f77c0e80ff1805e9caf7250