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CVE-2021-47671 (GCVE-0-2021-47671)

Vulnerability from cvelistv5 – Published: 2025-04-17 18:01 – Updated: 2026-05-11 13:58
VLAI
Title
can: etas_es58x: es58x_rx_err_msg(): fix memory leak in error path
Summary
In the Linux kernel, the following vulnerability has been resolved: can: etas_es58x: es58x_rx_err_msg(): fix memory leak in error path In es58x_rx_err_msg(), if can->do_set_mode() fails, the function directly returns without calling netif_rx(skb). This means that the skb previously allocated by alloc_can_err_skb() is not freed. In other terms, this is a memory leak. This patch simply removes the return statement in the error branch and let the function continue. Issue was found with GCC -fanalyzer, please follow the link below for details.
Severity
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-17 19:49 UTC
CWE
  • CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8537257874e949a59c834cecfd5a063e11b64b0b , < 4f389e1276a5389c92cef860c9fde8e1c802a871 (git)
Affected: 8537257874e949a59c834cecfd5a063e11b64b0b , < 7eb0881aec26099089f12ae850aebd93190b1dfe (git)
Affected: 8537257874e949a59c834cecfd5a063e11b64b0b , < d9447f768bc8c60623e4bb3ce65b8f4654d33a50 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 5.14.19 , ≤ 5.14.* (semver)
Unaffected: 5.15.3 , ≤ 5.15.* (semver)
Unaffected: 5.16 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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