Answer in brief
CVE-2022-50080 records a Medium severity (CVSS 5.5) vulnerability in tee: add overflow check in register_shm_helper(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.0:rc1:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=033ddf12bcf5326b93bd604f50a7474a434a35f9 <b37e0f17653c00b586cdbcdf0dbca475358ecffd || >=033ddf12bcf5326b93bd604f50a7474a434a35f9 <965333345fe952cc7eebc8e3a565ffc709441af2 || >=033ddf12bcf5326b93bd604f50a7474a434a35f9 <578c349570d2a912401963783b36e0ec7a25c053 || >=033ddf12bcf5326b93bd604f50a7474a434a35f9 <c12f0e6126ad223806a365084e86370511654bf1 || >=033ddf12bcf5326b93bd604f50a7474a434a35f9 <2f8e79a1a6128214cb9b205a9869341af5dfb16b || >=033ddf12bcf5326b93bd604f50a7474a434a35f9 <58c008d4d398f792ca67f35650610864725518fd || >=033ddf12bcf5326b93bd604f50a7474a434a35f9 <573ae4f13f630d6660008f1974c0a8a29c30e18a | b37e0f17653c00b586cdbcdf0dbca475358ecffd, 965333345fe952cc7eebc8e3a565ffc709441af2, 578c349570d2a912401963783b36e0ec7a25c053, c12f0e6126ad223806a365084e86370511654bf1, 2f8e79a1a6128214cb9b205a9869341af5dfb16b, 58c008d4d398f792ca67f35650610864725518fd, 573ae4f13f630d6660008f1974c0a8a29c30e18a |
| Linux/Linuxgeneric | 4.16 | Not reported |
Published upstream
Jun 18, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.