CVE-2022-49000
Intel VT-d IOMMU PCI Device Reference Count Leak Vulnerability
Description
In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix PCI device refcount leak in has_external_pci() for_each_pci_dev() is implemented by pci_get_device(). The comment of pci_get_device() says that it will increase the reference count for the returned pci_dev and also decrease the reference count for the input pci_dev @from if it is not NULL. If we break for_each_pci_dev() loop with pdev not NULL, we need to call pci_dev_put() to decrease the reference count. Add the missing pci_dev_put() before 'return true' to avoid reference count leak.
INFO
Published Date :
Oct. 21, 2024, 8:15 p.m.
Last Modified :
Oct. 31, 2024, 2:56 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
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information, practical solutions, and valuable tools related to
CVE-2022-49000.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2022-49000 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-49000 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Oct. 31, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://git.kernel.org/stable/c/10ed7655a17f6a3eaecd1293830488259ccd5723 No Types Assigned https://git.kernel.org/stable/c/10ed7655a17f6a3eaecd1293830488259ccd5723 Patch Changed Reference Type https://git.kernel.org/stable/c/17f67414718e6aba123335a33b7d15aa594fff34 No Types Assigned https://git.kernel.org/stable/c/17f67414718e6aba123335a33b7d15aa594fff34 Patch Changed Reference Type https://git.kernel.org/stable/c/afca9e19cc720bfafc75dc5ce429c185ca93f31d No Types Assigned https://git.kernel.org/stable/c/afca9e19cc720bfafc75dc5ce429c185ca93f31d Patch Changed Reference Type https://git.kernel.org/stable/c/b6eea8b2e858a20ad58ac62dc2de90fea2413f94 No Types Assigned https://git.kernel.org/stable/c/b6eea8b2e858a20ad58ac62dc2de90fea2413f94 Patch Added CWE NIST NVD-CWE-Other Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.0 up to (excluding) 5.10.158 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.82 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.0.12 *cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.1:rc6:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.1:rc7:*:*:*:*:*:* -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 21, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix PCI device refcount leak in has_external_pci() for_each_pci_dev() is implemented by pci_get_device(). The comment of pci_get_device() says that it will increase the reference count for the returned pci_dev and also decrease the reference count for the input pci_dev @from if it is not NULL. If we break for_each_pci_dev() loop with pdev not NULL, we need to call pci_dev_put() to decrease the reference count. Add the missing pci_dev_put() before 'return true' to avoid reference count leak. Added Reference kernel.org https://git.kernel.org/stable/c/10ed7655a17f6a3eaecd1293830488259ccd5723 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/b6eea8b2e858a20ad58ac62dc2de90fea2413f94 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/17f67414718e6aba123335a33b7d15aa594fff34 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/afca9e19cc720bfafc75dc5ce429c185ca93f31d [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-49000 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-49000
weaknesses.