CVE-2021-47179
See a problem?- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-47179
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47179.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-47179
- Related
- Published
- 2024-03-25T10:15:09Z
- Modified
- 2024-09-18T01:00:22Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
NFSv4: Fix a NULL pointer dereference in pnfsmarkmatchinglsegsreturn()
Commit de144ff4234f changes pnfsreturnlayout() to call pnfsmarkmatchinglsegsreturn() passing NULL as the struct pnfslayoutrange argument. Unfortunately, pnfsmarkmatchinglsegs_return() doesn't check if we have a value here before dereferencing it, causing an oops.
I'm able to hit this crash consistently when running connectathon basic tests on NFS v4.1/v4.2 against Ontap.
- References
-
- https://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494
- https://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48
- https://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42
- https://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb
- https://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb
- https://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a
- https://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53
- https://security-tracker.debian.org/tracker/CVE-2021-47179
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