CVE-2021-47535
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-47535
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47535.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-47535
- Related
- Published
- 2024-05-24T15:15:17Z
- Modified
- 2024-09-18T03:18:52.421599Z
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
drm/msm/a6xx: Allocate enough space for GMU registers
In commit 142639a52a01 ("drm/msm/a6xx: fix crashstate capture for A650") we changed a6xxgetgmu_registers() to read 3 sets of registers. Unfortunately, we didn't change the memory allocation for the array. That leads to a KASAN warning (this was on the chromeos-5.4 kernel, which has the problematic commit backported to it):
BUG: KASAN: slab-out-of-bounds in a6xxgetgmuregisters+0x144/0x430 Write of size 8 at addr ffffff80c89432b0 by task A618-worker/209 CPU: 5 PID: 209 Comm: A618-worker Tainted: G W 5.4.156-lockdep #22 Hardware name: Google Lazor Limozeen without Touchscreen (rev5 - rev8) (DT) Call trace: dumpbacktrace+0x0/0x248 showstack+0x20/0x2c dumpstack+0x128/0x1ec printaddressdescription+0x88/0x4a0 _kasanreport+0xfc/0x120 kasanreport+0x10/0x18 _asanreportstore8noabort+0x1c/0x24 a6xxgetgmuregisters+0x144/0x430 a6xxgpustateget+0x330/0x25d4 msmgpucrashstatecapture+0xa0/0x84c recoverworker+0x328/0x838 kthreadworkerfn+0x32c/0x574 kthread+0x2dc/0x39c retfrom_fork+0x10/0x18
Allocated by task 209: _kasankmalloc+0xfc/0x1c4 kasankmalloc+0xc/0x14 kmemcachealloctrace+0x1f0/0x2a0 a6xxgpustateget+0x164/0x25d4 msmgpucrashstatecapture+0xa0/0x84c recoverworker+0x328/0x838 kthreadworkerfn+0x32c/0x574 kthread+0x2dc/0x39c retfrom_fork+0x10/0x18
- References
Affected packages
Debian:11 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source