CVE - CVE-2021-47179

CVE-ID
CVE-2021-47179	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494 URL:https://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494 MISC:https://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48 URL:https://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48 MISC:https://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42 URL:https://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42 MISC:https://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb URL:https://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb MISC:https://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb URL:https://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb MISC:https://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a URL:https://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a MISC:https://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53 URL:https://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53
Assigning CNA
kernel.org
Date Record Created
20240325	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240325)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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