CVE-2021-47434
published 2024-05-22CVE-2021-47434: In the Linux kernel, the following vulnerability has been resolved: xhci: Fix command ring pointer corruption while aborting a command The command ring pointer…
PriorityP422medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.24%
14.7th percentile
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
28 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.14.16-1 (bookworm) | linux 5.14.16-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | >= 3.0.49 < 3.1 | 3.1 |
| linux | linux | >= 3.2.32 < 3.3 | 3.3 |
| linux | linux | >= 3.4.13 < 3.5 | 3.5 |
| linux | linux | >= 3.5.6 < 3.6 | 3.6 |
| linux | linux | >= 3.6.1 < 3.7 | 3.7 |
| linux | linux | >= b92cc66c047ff7cf587b318fe377061a353c120f < 22bcb65ea41072ab5d03c0c6290e04e0df6d09a0 | 22bcb65ea41072ab5d03c0c6290e04e0df6d09a0 |
| linux | linux | >= b92cc66c047ff7cf587b318fe377061a353c120f < 62c182b5e763e5f4062e72678e72ce3e02dd4d1b | 62c182b5e763e5f4062e72678e72ce3e02dd4d1b |
| linux | linux | >= b92cc66c047ff7cf587b318fe377061a353c120f < 01c2dcb67e71c351006dd17cbba86c26b7f61eaf | 01c2dcb67e71c351006dd17cbba86c26b7f61eaf |
| linux | linux | >= b92cc66c047ff7cf587b318fe377061a353c120f < dec944bb7079b37968cf69c8a438f91f15c4cc61 | dec944bb7079b37968cf69c8a438f91f15c4cc61 |
| linux | linux | >= b92cc66c047ff7cf587b318fe377061a353c120f < e54abefe703ab7c4e5983e889babd1447738ca42 | e54abefe703ab7c4e5983e889babd1447738ca42 |
| linux | linux | >= b92cc66c047ff7cf587b318fe377061a353c120f < ff0e50d3564f33b7f4b35cadeabd951d66cfc570 | ff0e50d3564f33b7f4b35cadeabd951d66cfc570 |
| linux | linux_kernel | < 4.14.252 | 4.14.252 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.84-1 | 5.10.84-1 |
| linux | linux_kernel | >= 0 < 5.14.16-1 | 5.14.16-1 |
| linux | linux_kernel | >= 0 < 5.14.16-1 | 5.14.16-1 |
| linux | linux_kernel | >= 0 < 5.14.16-1 | 5.14.16-1 |
| linux | linux_kernel | >= 4.15 < 4.19.213 | 4.19.213 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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OSV
CVE-2021-47434: In the Linux kernel, the following vulnerability has been resolved: xhci: Fix command ring pointer corruption while aborting a command The command rin
osv·2024-05-22·CVSS 5.5
CVE-2021-47434 [MEDIUM] CVE-2021-47434: In the Linux kernel, the following vulnerability has been resolved: xhci: Fix command ring pointer corruption while aborting a command The command rin
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, w
GHSA
GHSA-5ggq-5m2f-79jm: In the Linux kernel, the following vulnerability has been resolved:
xhci: Fix command ring pointer corruption while aborting a command
The command r
ghsa_unreviewed·2024-05-22
CVE-2021-47434 [MEDIUM] GHSA-5ggq-5m2f-79jm: In the Linux kernel, the following vulnerability has been resolved:
xhci: Fix command ring pointer corruption while aborting a command
The command r
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,
Red Hat
kernel: xhci: Fix command ring pointer corruption while aborting a command
vendor_redhat·2024-05-22·CVSS 5.5
CVE-2021-47434 [MEDIUM] CWE-822 kernel: xhci: Fix command ring pointer corruption while aborting a command
kernel: xhci: Fix command ring pointer corruption while aborting a command
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 r
Debian
CVE-2021-47434: linux - In the Linux kernel, the following vulnerability has been resolved: xhci: Fix c...
vendor_debian·2021·CVSS 5.5
CVE-2021-47434 [MEDIUM] CVE-2021-47434: linux - In the Linux kernel, the following vulnerability has been resolved: xhci: Fix c...
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, w
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/01c2dcb67e71c351006dd17cbba86c26b7f61eafhttps://git.kernel.org/stable/c/22bcb65ea41072ab5d03c0c6290e04e0df6d09a0https://git.kernel.org/stable/c/62c182b5e763e5f4062e72678e72ce3e02dd4d1bhttps://git.kernel.org/stable/c/dec944bb7079b37968cf69c8a438f91f15c4cc61https://git.kernel.org/stable/c/e54abefe703ab7c4e5983e889babd1447738ca42https://git.kernel.org/stable/c/ff0e50d3564f33b7f4b35cadeabd951d66cfc570https://git.kernel.org/stable/c/01c2dcb67e71c351006dd17cbba86c26b7f61eafhttps://git.kernel.org/stable/c/22bcb65ea41072ab5d03c0c6290e04e0df6d09a0https://git.kernel.org/stable/c/62c182b5e763e5f4062e72678e72ce3e02dd4d1bhttps://git.kernel.org/stable/c/dec944bb7079b37968cf69c8a438f91f15c4cc61https://git.kernel.org/stable/c/e54abefe703ab7c4e5983e889babd1447738ca42https://git.kernel.org/stable/c/ff0e50d3564f33b7f4b35cadeabd951d66cfc570
2024-05-22
Published