vulnerability
Ubuntu: (CVE-2021-47179): linux vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | Mar 25, 2024 | Nov 19, 2024 | Feb 11, 2025 |
Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
Mar 25, 2024
Added
Nov 19, 2024
Modified
Feb 11, 2025
Description
In the Linux kernel, the following vulnerability has been resolved:
NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()
Commit de144ff4234f changes _pnfs_return_layout() to call
pnfs_mark_matching_lsegs_return() passing NULL as the struct
pnfs_layout_range argument. Unfortunately,
pnfs_mark_matching_lsegs_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.
Solution(s)
ubuntu-upgrade-linuxubuntu-upgrade-linux-awsubuntu-upgrade-linux-aws-5-4ubuntu-upgrade-linux-azureubuntu-upgrade-linux-azure-5-4ubuntu-upgrade-linux-bluefieldubuntu-upgrade-linux-fipsubuntu-upgrade-linux-gcpubuntu-upgrade-linux-gcp-5-4ubuntu-upgrade-linux-gkeopubuntu-upgrade-linux-hwe-5-4ubuntu-upgrade-linux-kvmubuntu-upgrade-linux-oracleubuntu-upgrade-linux-oracle-5-4ubuntu-upgrade-linux-raspiubuntu-upgrade-linux-raspi-5-4
References
- CVE-2021-47179
- https://attackerkb.com/topics/CVE-2021-47179
- URL-https://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494
- URL-https://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48
- URL-https://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42
- URL-https://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb
- URL-https://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a
- URL-https://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53
- URL-https://www.cve.org/CVERecord?id=CVE-2021-47179
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