CVE-2022-50080
published 2025-06-18CVE-2022-50080: In the Linux kernel, the following vulnerability has been resolved: tee: add overflow check in register_shm_helper() With special lengths supplied by user…
PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.22%
12.9th percentile
In the Linux kernel, the following vulnerability has been resolved:
tee: add overflow check in register_shm_helper()
With special lengths supplied by user space, register_shm_helper() has
an integer overflow when calculating the number of pages covered by a
supplied user space memory region.
This causes internal_get_user_pages_fast() a helper function of
pin_user_pages_fast() to do a NULL pointer dereference:
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010
Modules linked in:
CPU: 1 PID: 173 Comm: optee_example_a Not tainted 5.19.0 #11
Hardware name: QEMU QEMU Virtual Machine, BIOS 0.0.0 02/06/2015
pc : internal_get_user_pages_fast+0x474/0xa80
Call trace:
internal_get_user_pages_fast+0x474/0xa80
pin_user_pages_fast+0x24/0x4c
register_shm_helper+0x194/0x330
tee_shm_register_user_buf+0x78/0x120
tee_ioctl+0xd0/0x11a0
__arm64_sys_ioctl+0xa8/0xec
invoke_syscall+0x48/0x114
Fix this by adding an an explicit call to access_ok() in
tee_shm_register_user_buf() to catch an invalid user space address
early.
Affected
20 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.0.2-1 (bookworm) | linux 6.0.2-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 033ddf12bcf5326b93bd604f50a7474a434a35f9 < b37e0f17653c00b586cdbcdf0dbca475358ecffd | b37e0f17653c00b586cdbcdf0dbca475358ecffd |
| linux | linux | >= 033ddf12bcf5326b93bd604f50a7474a434a35f9 < 965333345fe952cc7eebc8e3a565ffc709441af2 | 965333345fe952cc7eebc8e3a565ffc709441af2 |
| linux | linux | >= 033ddf12bcf5326b93bd604f50a7474a434a35f9 < 578c349570d2a912401963783b36e0ec7a25c053 | 578c349570d2a912401963783b36e0ec7a25c053 |
| linux | linux | >= 033ddf12bcf5326b93bd604f50a7474a434a35f9 < c12f0e6126ad223806a365084e86370511654bf1 | c12f0e6126ad223806a365084e86370511654bf1 |
| linux | linux | >= 033ddf12bcf5326b93bd604f50a7474a434a35f9 < 2f8e79a1a6128214cb9b205a9869341af5dfb16b | 2f8e79a1a6128214cb9b205a9869341af5dfb16b |
| linux | linux | >= 033ddf12bcf5326b93bd604f50a7474a434a35f9 < 58c008d4d398f792ca67f35650610864725518fd | 58c008d4d398f792ca67f35650610864725518fd |
| linux | linux | >= 033ddf12bcf5326b93bd604f50a7474a434a35f9 < 573ae4f13f630d6660008f1974c0a8a29c30e18a | 573ae4f13f630d6660008f1974c0a8a29c30e18a |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.140-1 | 5.10.140-1 |
| linux | linux_kernel | >= 0 < 6.0.2-1 | 6.0.2-1 |
| linux | linux_kernel | >= 0 < 6.0.2-1 | 6.0.2-1 |
| linux | linux_kernel | >= 0 < 6.0.2-1 | 6.0.2-1 |
| linux | linux_kernel | >= 4.16 < 4.19.256 | 4.19.256 |
| linux | linux_kernel | >= 4.20 < 5.4.211 | 5.4.211 |
| linux | linux_kernel | >= 5.11 < 5.15.62 | 5.15.62 |
| linux | linux_kernel | >= 5.16 < 5.18.19 | 5.18.19 |
| linux | linux_kernel | >= 5.19 < 5.19.3 | 5.19.3 |
| linux | linux_kernel | >= 5.5 < 5.10.137 | 5.10.137 |
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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Red Hat
kernel: tee: add overflow check in register_shm_helper()
vendor_redhat·2025-06-18·CVSS 5.5
CVE-2022-50080 [MEDIUM] kernel: tee: add overflow check in register_shm_helper()
kernel: tee: add overflow check in register_shm_helper()
In the Linux kernel, the following vulnerability has been resolved:
tee: add overflow check in register_shm_helper()
With special lengths supplied by user space, register_shm_helper() has
an integer overflow when calculating the number of pages covered by a
supplied user space memory region.
This causes internal_get_user_pages_fast() a helper function of
pin_user_pages_fast() to do a NULL pointer dereference:
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010
Modules linked in:
CPU: 1 PID: 173 Comm: optee_example_a Not tainted 5.19.0 #11
Hardware name: QEMU QEMU Virtual Machine, BIOS 0.0.0 02/06/2015
pc : internal_get_user_pages_fast+0x474/0xa80
Call trace:
internal_get_user_pages_fast+0x474/0xa80
p
Debian
CVE-2022-50080: linux - In the Linux kernel, the following vulnerability has been resolved: tee: add ov...
vendor_debian·2022·CVSS 5.5
CVE-2022-50080 [MEDIUM] CVE-2022-50080: linux - In the Linux kernel, the following vulnerability has been resolved: tee: add ov...
In the Linux kernel, the following vulnerability has been resolved: tee: add overflow check in register_shm_helper() With special lengths supplied by user space, register_shm_helper() has an integer overflow when calculating the number of pages covered by a supplied user space memory region. This causes internal_get_user_pages_fast() a helper function of pin_user_pages_fast() to do a NULL pointer dereference: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010 Modules linked in: CPU: 1 PID: 173 Comm: optee_example_a Not tainted 5.19.0 #11 Hardware name: QEMU QEMU Virtual Machine, BIOS 0.0.0 02/06/2015 pc : internal_get_user_pages_fast+0x474/0xa80 Call trace: internal_get_user_pages_fast+0x474/0xa80 pin_user_pages_fast+0x24/0x4c register_shm_helper+0x194/0x3
GHSA
GHSA-cqg3-9qgq-grfj: In the Linux kernel, the following vulnerability has been resolved:
tee: add overflow check in register_shm_helper()
With special lengths supplied b
ghsa_unreviewed·2025-06-18
CVE-2022-50080 [MEDIUM] CWE-476 GHSA-cqg3-9qgq-grfj: In the Linux kernel, the following vulnerability has been resolved:
tee: add overflow check in register_shm_helper()
With special lengths supplied b
In the Linux kernel, the following vulnerability has been resolved:
tee: add overflow check in register_shm_helper()
With special lengths supplied by user space, register_shm_helper() has
an integer overflow when calculating the number of pages covered by a
supplied user space memory region.
This causes internal_get_user_pages_fast() a helper function of
pin_user_pages_fast() to do a NULL pointer dereference:
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010
Modules linked in:
CPU: 1 PID: 173 Comm: optee_example_a Not tainted 5.19.0 #11
Hardware name: QEMU QEMU Virtual Machine, BIOS 0.0.0 02/06/2015
pc : internal_get_user_pages_fast+0x474/0xa80
Call trace:
internal_get_user_pages_fast+0x474/0xa80
pin_user_pages_fast+0x24/0x4c
register_shm_helper+0x194
OSV
CVE-2022-50080: In the Linux kernel, the following vulnerability has been resolved: tee: add overflow check in register_shm_helper() With special lengths supplied by
osv·2025-06-18·CVSS 5.5
CVE-2022-50080 [MEDIUM] CVE-2022-50080: In the Linux kernel, the following vulnerability has been resolved: tee: add overflow check in register_shm_helper() With special lengths supplied by
In the Linux kernel, the following vulnerability has been resolved: tee: add overflow check in register_shm_helper() With special lengths supplied by user space, register_shm_helper() has an integer overflow when calculating the number of pages covered by a supplied user space memory region. This causes internal_get_user_pages_fast() a helper function of pin_user_pages_fast() to do a NULL pointer dereference: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010 Modules linked in: CPU: 1 PID: 173 Comm: optee_example_a Not tainted 5.19.0 #11 Hardware name: QEMU QEMU Virtual Machine, BIOS 0.0.0 02/06/2015 pc : internal_get_user_pages_fast+0x474/0xa80 Call trace: internal_get_user_pages_fast+0x474/0xa80 pin_user_pages_fast+0x24/0x4c register_shm_helper+0x194/0x3
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/2f8e79a1a6128214cb9b205a9869341af5dfb16bhttps://git.kernel.org/stable/c/573ae4f13f630d6660008f1974c0a8a29c30e18ahttps://git.kernel.org/stable/c/578c349570d2a912401963783b36e0ec7a25c053https://git.kernel.org/stable/c/58c008d4d398f792ca67f35650610864725518fdhttps://git.kernel.org/stable/c/965333345fe952cc7eebc8e3a565ffc709441af2https://git.kernel.org/stable/c/b37e0f17653c00b586cdbcdf0dbca475358ecffdhttps://git.kernel.org/stable/c/c12f0e6126ad223806a365084e86370511654bf1
2025-06-18
Published