Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: xhci: Fix command ring pointer corruption while aborting a command The command ring pointer is located at [6:63] bits of the command ring control register (CRCR). All the control bits like command stop, abort are located at [0:3] bits. While aborting a command, we read the CRCR and set the abort bit and write to the CRCR. The read will always give command ring pointer as all zeros. So we essentially write only the control bits. Since we split the 64 bit write into two 32 bit writes, there is a possibility of xHC command ring stopped before the upper dword (all zeros) is written. If that happens, xHC updates the upper dword of its internal command ring pointer with all zeros. Next time, when the command ring is restarted, we see xHC memory access failures. Fix this issue by only writing to the lower dword of CRCR where all control bits are located.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected b92cc66c047ff7cf587b318fe377061a353c120f before 22bcb65ea41072ab5d03c0c6290e04e0df6d09a0; affected b92cc66c047ff7cf587b318fe377061a353c120f before 62c182b5e763e5f4062e72678e72ce3e02dd4d1b; affected b92cc66c047ff7cf587b318fe377061a353c120f before 01c2dcb67e71c351006dd17cbba86c26b7f61eaf; affected b92cc66c047ff7cf587b318fe377061a353c120f before dec944bb7079b37968cf69c8a438f91f15c4cc61; affected b92cc66c047ff7cf587b318fe377061a353c120f before e54abefe703ab7c4e5983e889babd1447738ca42; affected b92cc66c047ff7cf587b318fe377061a353c120f before ff0e50d3564f33b7f4b35cadeabd951d66cfc570; affected bc47204b268516ae4085ebdc81a34ddda71b77c4; affected 88bd928daafb5912c269af628b1e5347620c9a62; affected 2818247b6565b7adfbcd53b74509448a8e1fad84; affected ef6273930e170a4f70a2c7f57a214813c5cf30bb; affected f83994f3e2438b982fb9821d948199b3327638d8; affected 3.0.49 before 3.1; affected 3.2.32 before 3.3; affected 3.4.13 before 3.5; affected 3.5.6 before 3.6; affected 3.6.1 before 3.7 |
| Linux / Linux | affected 3.7; unaffected 0 before 3.7; unaffected 4.14.252 through 4.14.*; unaffected 4.19.213 through 4.19.*; unaffected 5.4.155 through 5.4.*; unaffected 5.10.75 through 5.10.*; unaffected 5.14.14 through 5.14.*; unaffected 5.15 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/22bcb65ea41072ab5d03c0c6290e04e0df6d09a0
- https://git.kernel.org/stable/c/62c182b5e763e5f4062e72678e72ce3e02dd4d1b
- https://git.kernel.org/stable/c/01c2dcb67e71c351006dd17cbba86c26b7f61eaf
- https://git.kernel.org/stable/c/dec944bb7079b37968cf69c8a438f91f15c4cc61
- https://git.kernel.org/stable/c/e54abefe703ab7c4e5983e889babd1447738ca42
- https://git.kernel.org/stable/c/ff0e50d3564f33b7f4b35cadeabd951d66cfc570
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.
- https://git.kernel.org/stable/c/22bcb65ea41072ab5d03c0c6290e04e0df6d09a0
- https://git.kernel.org/stable/c/62c182b5e763e5f4062e72678e72ce3e02dd4d1b
- https://git.kernel.org/stable/c/01c2dcb67e71c351006dd17cbba86c26b7f61eaf
- https://git.kernel.org/stable/c/dec944bb7079b37968cf69c8a438f91f15c4cc61
- https://git.kernel.org/stable/c/e54abefe703ab7c4e5983e889babd1447738ca42
- https://git.kernel.org/stable/c/ff0e50d3564f33b7f4b35cadeabd951d66cfc570