Bug 2435651 (CVE-2026-23037) - CVE-2026-23037 kernel: can: etas_es58x: allow partial RX URB allocation to succeed
Summary: CVE-2026-23037 kernel: can: etas_es58x: allow partial RX URB allocation to su...
Keywords:
Status: NEW
Alias: CVE-2026-23037
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Product Security DevOps Team
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-01-31 12:01 UTC by OSIDB Bzimport
Modified: 2026-02-02 11:20 UTC (History)
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Description OSIDB Bzimport 2026-01-31 12:01:53 UTC
In the Linux kernel, the following vulnerability has been resolved:

can: etas_es58x: allow partial RX URB allocation to succeed

When es58x_alloc_rx_urbs() fails to allocate the requested number of
URBs but succeeds in allocating some, it returns an error code.
This causes es58x_open() to return early, skipping the cleanup label
'free_urbs', which leads to the anchored URBs being leaked.

As pointed out by maintainer Vincent Mailhol, the driver is designed
to handle partial URB allocation gracefully. Therefore, partial
allocation should not be treated as a fatal error.

Modify es58x_alloc_rx_urbs() to return 0 if at least one URB has been
allocated, restoring the intended behavior and preventing the leak
in es58x_open().


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