Bug 2464346 (CVE-2026-31737) - CVE-2026-31737 kernel: net: ftgmac100: fix ring allocation unwind on open failure
Summary: CVE-2026-31737 kernel: net: ftgmac100: fix ring allocation unwind on open fai...
Keywords:
Status: NEW
Alias: CVE-2026-31737
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-01 15:01 UTC by OSIDB Bzimport
Modified: 2026-05-01 21:33 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-05-01 15:01:26 UTC
In the Linux kernel, the following vulnerability has been resolved:

net: ftgmac100: fix ring allocation unwind on open failure

ftgmac100_alloc_rings() allocates rx_skbs, tx_skbs, rxdes, txdes, and
rx_scratch in stages. On intermediate failures it returned -ENOMEM
directly, leaking resources allocated earlier in the function.

Rework the failure path to use staged local unwind labels and free
allocated resources in reverse order before returning -ENOMEM. This
matches common netdev allocation cleanup style.


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