drm/imagination: acquire vm_ctx->lock before mapping memory to GPU VM
In the Linux kernel, the following vulnerability has been resolved: drm/imagination: acquire vm_ctx->lock before mapping memory to GPU VM The drm gpuvm code doesn't protect find operation against map operation, and the driver needs to ensure a map operation shouldn't happen when a find operation is in progress. In some cases a find operation will be in progress when doing map/unmap operations, and the find operation will do a NULL pointer dereference. An example of the stack trace of such NULL dereference is shown below: ``` Unable to handle kernel access to user memory without uaccess routines at virtual address 0000000000000010 [] drm_gpuva_find+0x28/0x6c [drm_gpuvm] [] pvr_vm_unmap+0x34/0x68 [powervr] [] pvr_ioctl_vm_unmap+0x2e/0x50 [powervr] [] drm_ioctl_kernel+0x8e/0xdc [] drm_ioctl+0x1be/0x3e0 [] __riscv_sys_ioctl+0xba/0xc4 [] do_trap_ecall_u+0x23e/0x3f4 [] handle_exception+0x168/0x174 ``` As all occurences of drm_gpuva_find*() are already guarded by vm_ctx->lock, make pvr_vm_map() to acquire this lock to prevent disturbing any find operation. This fixes the NULL deference problem in drm_gpuva_find*().
CVE-2026-68260
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:CVE-2026-68260
Kernel
Source reference: /affected/1/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 6.12.101
Source reference:
/affected/1/ranges6.18.42Source reference:
/affected/1/ranges7.1.6Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "ff5f643de0bf27874c4033cd57a0bd034b5c7d11"
},
{
"fixed": "1f1f2618e44b21a7d4eb30d3bbd7e015ffbbbadf"
},
{
"fixed": "6253bb56bb2ebdf317d8b599ce737a2510cc2e17"
},
{
"fixed": "15f58d44c24477a6ebffa44ec05207b81cfa55d9"
},
{
"fixed": "17e2030f37600994440f875dc410615d5c66ee6d"
}
]
}
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68260.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.8.0"
},
{
"fixed": "6.12.101"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.13.0"
},
{
"fixed": "6.18.42"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.19.0"
},
{
"fixed": "7.1.6"
}
]
}
],
"package": {
"name": "Kernel",
"ecosystem": "Linux"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68260.json"
}
}
]- Related CVEs
- CVE-2026-68260
Source reference:
/id
Publisher severity
No explicit severity was provided.
- Event
- #50752 · Revision 1
- Added to Heist Feed
- Publisher date