DEBIAN-CVE-2022-48867
- Source
- https://security-tracker.debian.org/tracker/CVE-2022-48867
- Import Source
- https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-48867.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2022-48867
- Upstream
- Published
- 2024-08-21T07:15:03Z
- Modified
- 2025-09-25T22:40:33Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Prevent use after free on completion memory On driver unload any pending descriptors are flushed at the time the interrupt is freed: idxddmaenginedrvremove() -> drvdisablewq() -> idxdwqfreeirq() -> idxdflushpendingdescs(). If there are any descriptors present that need to be flushed this flow triggers a "not present" page fault as below: BUG: unable to handle page fault for address: ff391c97c70c9040 #PF: supervisor read access in kernel mode #PF: errorcode(0x0000) - not-present page The address that triggers the fault is the address of the descriptor that was freed moments earlier via: drvdisablewq()->idxdwqfreeresources() Fix the use after free by freeing the descriptors after any possible usage. This is done after idxdwq_reset() to ensure that the memory remains accessible during possible completion writes by the device.
- References
Affected packages
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
Debian:14 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source