CVE-2022-49436
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-49436
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49436.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2022-49436
- Related
- Published
- 2025-02-26T07:01:20Z
- Modified
- 2025-02-26T07:01:20Z
- Downstream
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
powerpc/paprscm: Fix leaking nvdimmevents_map elements
Right now 'char *' elements allocated for individual 'statid' in 'paprscmpriv.nvdimmeventsmap[]' during paprscmpmucheckevents(), get leaked in paprscmremove() and paprscmpmuregister(), paprscmpmucheckevents() error paths.
Also individual 'statid' arent NULL terminated 'char *' instead they are fixed 8-byte sized identifiers. However paprscmpmuregister() assumes it to be a NULL terminated 'char *' and at other places it assumes it to be a 'paprscmperfstat.statid' sized string which is 8-byes in size.
Fix this by allocating the memory for paprscmpriv.nvdimmeventsmap to also include space for 'statid' entries. This is possible since number of available events/statids are known upfront. This saves some memory and one extra level of indirection from 'nvdimmeventsmap' to 'statid'. Also rest of the code can continue to call 'kfree(paprscmpriv.nvdimmevents_map)' without needing to iterate over the array and free up individual elements.
- 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