CVE-2021-47469
Linux SPI: Remote Deadlock Weakness
Description
Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
INFO
Published Date :
May 22, 2024, 7:15 a.m.
Last Modified :
March 3, 2025, 9:15 a.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-47469 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47469 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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CVE Rejected by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Mar. 03, 2025
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Mar. 03, 2025
Action Type Old Value New Value Changed Description In the Linux kernel, the following vulnerability has been resolved: spi: Fix deadlock when adding SPI controllers on SPI buses Currently we have a global spi_add_lock which we take when adding new devices so that we can check that we're not trying to reuse a chip select that's already controlled. This means that if the SPI device is itself a SPI controller and triggers the instantiation of further SPI devices we trigger a deadlock as we try to register and instantiate those devices while in the process of doing so for the parent controller and hence already holding the global spi_add_lock. Since we only care about concurrency within a single SPI bus move the lock to be per controller, avoiding the deadlock. This can be easily triggered in the case of spi-mux. Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority. Removed CVSS V3.1 NIST: AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Removed CWE NIST: CWE-667 Removed CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.15:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 from (excluding) 5.14.15 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (excluding) 5.4.286 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 from (excluding) 5.10.230 Removed Reference kernel.org: https://git.kernel.org/stable/c/6098475d4cb48d821bdf453c61118c56e26294f0 Removed Reference kernel.org: https://git.kernel.org/stable/c/722ef19a161ce3fffb3d1b01ce2301c306639bdd Removed Reference kernel.org: https://git.kernel.org/stable/c/aa3f3d7bef59583f2d3234173105a27ff61ef8fe Removed Reference kernel.org: https://git.kernel.org/stable/c/c8dce228db6f81dbc897a018dfc5c418e917cf64 Removed Reference CVE: https://git.kernel.org/stable/c/6098475d4cb48d821bdf453c61118c56e26294f0 Removed Reference CVE: https://git.kernel.org/stable/c/722ef19a161ce3fffb3d1b01ce2301c306639bdd Removed Reference Type kernel.org: https://git.kernel.org/stable/c/6098475d4cb48d821bdf453c61118c56e26294f0 Types: Patch Removed Reference Type kernel.org: https://git.kernel.org/stable/c/722ef19a161ce3fffb3d1b01ce2301c306639bdd Types: Patch Removed Reference Type kernel.org: https://git.kernel.org/stable/c/aa3f3d7bef59583f2d3234173105a27ff61ef8fe Types: Patch Removed Reference Type kernel.org: https://git.kernel.org/stable/c/c8dce228db6f81dbc897a018dfc5c418e917cf64 Types: Patch Removed Reference Type CVE: https://git.kernel.org/stable/c/6098475d4cb48d821bdf453c61118c56e26294f0 Types: Patch Removed Reference Type CVE: https://git.kernel.org/stable/c/722ef19a161ce3fffb3d1b01ce2301c306639bdd Types: Patch -
Initial Analysis by [email protected]
Jan. 10, 2025
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 Added CWE NIST CWE-667 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.4.286 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.230 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.14.15 *cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.15:rc5:*:*:*:*:*:* Changed Reference Type https://git.kernel.org/stable/c/6098475d4cb48d821bdf453c61118c56e26294f0 No Types Assigned https://git.kernel.org/stable/c/6098475d4cb48d821bdf453c61118c56e26294f0 Patch Changed Reference Type https://git.kernel.org/stable/c/6098475d4cb48d821bdf453c61118c56e26294f0 No Types Assigned https://git.kernel.org/stable/c/6098475d4cb48d821bdf453c61118c56e26294f0 Patch Changed Reference Type https://git.kernel.org/stable/c/722ef19a161ce3fffb3d1b01ce2301c306639bdd No Types Assigned https://git.kernel.org/stable/c/722ef19a161ce3fffb3d1b01ce2301c306639bdd Patch Changed Reference Type https://git.kernel.org/stable/c/722ef19a161ce3fffb3d1b01ce2301c306639bdd No Types Assigned https://git.kernel.org/stable/c/722ef19a161ce3fffb3d1b01ce2301c306639bdd Patch Changed Reference Type https://git.kernel.org/stable/c/aa3f3d7bef59583f2d3234173105a27ff61ef8fe No Types Assigned https://git.kernel.org/stable/c/aa3f3d7bef59583f2d3234173105a27ff61ef8fe Patch Changed Reference Type https://git.kernel.org/stable/c/c8dce228db6f81dbc897a018dfc5c418e917cf64 No Types Assigned https://git.kernel.org/stable/c/c8dce228db6f81dbc897a018dfc5c418e917cf64 Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/6098475d4cb48d821bdf453c61118c56e26294f0 Added Reference https://git.kernel.org/stable/c/722ef19a161ce3fffb3d1b01ce2301c306639bdd -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Nov. 17, 2024
Action Type Old Value New Value Added Reference kernel.org https://git.kernel.org/stable/c/aa3f3d7bef59583f2d3234173105a27ff61ef8fe [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/c8dce228db6f81dbc897a018dfc5c418e917cf64 [No types assigned] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 22, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: spi: Fix deadlock when adding SPI controllers on SPI buses Currently we have a global spi_add_lock which we take when adding new devices so that we can check that we're not trying to reuse a chip select that's already controlled. This means that if the SPI device is itself a SPI controller and triggers the instantiation of further SPI devices we trigger a deadlock as we try to register and instantiate those devices while in the process of doing so for the parent controller and hence already holding the global spi_add_lock. Since we only care about concurrency within a single SPI bus move the lock to be per controller, avoiding the deadlock. This can be easily triggered in the case of spi-mux. Added Reference kernel.org https://git.kernel.org/stable/c/722ef19a161ce3fffb3d1b01ce2301c306639bdd [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/6098475d4cb48d821bdf453c61118c56e26294f0 [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-2021-47469 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-2021-47469
weaknesses.