CVE-2021-47179

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-47179
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.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494 Patch
https://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48 Patch
https://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42 Patch
https://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb Patch
https://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb Patch
https://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a Patch
https://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53 Patch
https://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494 Patch
https://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48 Patch
https://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42 Patch
https://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb Patch
https://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb Patch
https://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a Patch
https://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

21 Nov 2024, 06:35

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494 - Patch () https://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494 - Patch
References () https://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48 - Patch () https://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48 - Patch
References () https://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42 - Patch () https://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42 - Patch
References () https://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb - Patch () https://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb - Patch
References () https://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb - Patch () https://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb - Patch
References () https://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a - Patch () https://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a - Patch
References () https://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53 - Patch () https://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53 - Patch

16 May 2024, 21:20

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CWE CWE-476
First Time Linux
Linux linux Kernel
References () https://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494 - () https://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494 - Patch
References () https://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48 - () https://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48 - Patch
References () https://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42 - () https://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42 - Patch
References () https://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb - () https://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb - Patch
References () https://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb - () https://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb - Patch
References () https://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a - () https://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a - Patch
References () https://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53 - () https://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53 - Patch

04 Apr 2024, 14:15

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb -

25 Mar 2024, 13:47

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: NFSv4: corrige una desreferencia de puntero NULL en pnfs_mark_matching_lsegs_return(). Confirme los cambios de144ff4234f _pnfs_return_layout() para llamar a pnfs_mark_matching_lsegs_return() pasando NULL como argumento de estructura pnfs_layout_range. Desafortunadamente, pnfs_mark_matching_lsegs_return() no verifica si tenemos un valor aquí antes de eliminar la referencia a él, lo que provoca un error. Puedo alcanzar este bloqueo de manera consistente cuando ejecuto pruebas básicas de Connectathon en NFS v4.1/v4.2 contra Ontap.

25 Mar 2024, 10:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-03-25 10:15

Updated : 2024-11-21 06:35

NVD link : CVE-2021-47179

Mitre link : CVE-2021-47179

CVE.ORG link : CVE-2021-47179

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference


NetmanageIT Website NetmanageIT OSINT Web NetmanageIT OpenCTI NetmanageIT PDF Tools NetmanageIT CTO Corner Blog NetmanageIT Email Header Analyzer NetmanageIT Password Pusher NetmanageIT Internet Health and Latency Dashboard NetmanageIT Dedicated Speed Test Site NetmanageIT Ubuntu Mirror 10Gbps Copyright OpenCVE 2024