Bug 2426247 (CVE-2022-50877) - CVE-2022-50877 kernel: net: broadcom: bcm4908_enet: update TX stats after actual transmission
Summary: CVE-2022-50877 kernel: net: broadcom: bcm4908_enet: update TX stats after act...
Keywords:
Status: NEW
Alias: CVE-2022-50877
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-12-30 13:19 UTC by OSIDB Bzimport
Modified: 2025-12-30 22:22 UTC (History)
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Description OSIDB Bzimport 2025-12-30 13:19:11 UTC 
In the Linux kernel, the following vulnerability has been resolved:

net: broadcom: bcm4908_enet: update TX stats after actual transmission

Queueing packets doesn't guarantee their transmission. Update TX stats
after hardware confirms consuming submitted data.

This also fixes a possible race and NULL dereference.
bcm4908_enet_start_xmit() could try to access skb after freeing it in
the bcm4908_enet_poll_tx().
Comment 1 Alexander B 2025-12-30 22:18:45 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025123023-CVE-2022-50877-6a05@gregkh/T
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