CVE-2022-48794: net: ieee802154: at86rf230: Stop leaking skb's

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-07-16 · updated 2026-06-17
Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: net: ieee802154: at86rf230: Stop leaking skb's Upon error the ieee802154_xmit_complete() helper is not called. Only ieee802154_wake_queue() is called manually. In the Tx case we then leak the skb structure. Free the skb structure upon error before returning when appropriate. As the 'is_tx = 0' cannot be moved in the complete handler because of a possible race between the delay in switching to STATE_RX_AACK_ON and a new interrupt, we introduce an intermediate 'was_tx' boolean just for this purpose. There is no Fixes tag applying here, many changes have been made on this area and the issue kind of always existed.

Affected products

Linux kernel: before 4.9.303; from 4.10 before 4.14.268; from 4.15 before 4.19.231; from 4.20 before 5.4.181; from 5.5 before 5.10.102; from 5.11 before 5.15.25 — fixed in 4.14.268, 4.19.231, 4.9.303, 5.10.102, 5.15.25, 5.16.11

How to fix

Upgrade to a fixed version: Linux kernel 4.14.268, 4.19.231, 4.9.303, 5.10.102. Check the vendor advisory for mitigations.

References

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