CVE-2022-50080
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2022
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
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 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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 033ddf12bcf5326b93bd604f50a7474a434a35f9 | affected | git | b37e0f17653c00b586cdbcdf0dbca475358ecffd | Unavailable | None listed |
| 033ddf12bcf5326b93bd604f50a7474a434a35f9 | affected | git | 965333345fe952cc7eebc8e3a565ffc709441af2 | Unavailable | None listed |
| 033ddf12bcf5326b93bd604f50a7474a434a35f9 | affected | git | 578c349570d2a912401963783b36e0ec7a25c053 | Unavailable | None listed |
| 033ddf12bcf5326b93bd604f50a7474a434a35f9 | affected | git | c12f0e6126ad223806a365084e86370511654bf1 | Unavailable | None listed |
| 033ddf12bcf5326b93bd604f50a7474a434a35f9 | affected | git | 2f8e79a1a6128214cb9b205a9869341af5dfb16b | Unavailable | None listed |
| 033ddf12bcf5326b93bd604f50a7474a434a35f9 | affected | git | 58c008d4d398f792ca67f35650610864725518fd | Unavailable | None listed |
| 033ddf12bcf5326b93bd604f50a7474a434a35f9 | affected | git | 573ae4f13f630d6660008f1974c0a8a29c30e18a | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.16 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.16 | Unavailable | None listed |
| 4.19.256 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.211 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.137 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.62 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 5.18.19 | unaffected | semver | Unavailable | 5.18.* | None listed |
| 5.19.3 | unaffected | semver | Unavailable | 5.19.* | None listed |
| 6.0 | unaffected | original_commit_for_fix | Unavailable | * | None listed |