Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: net: usb: ax88179_178a: fix skb leak in ax88179_tx_fixup() When the interface has NETIF_F_SG enabled and skb_linearize() fails in ax88179_tx_fixup(), the function returns NULL without freeing the skb. usbnet_start_xmit() treats a NULL return from tx_fixup() as a drop (info->flags does not set FLAG_MULTI_PACKET for this driver), jumping to the "drop" label where it does `if (skb) dev_kfree_skb_any(skb)`. Because tx_fixup() returned NULL, the local skb variable in usbnet_start_xmit() is NULL, so the original skb is never freed — a memory leak on every TX frame whose linearization fails (i.e. under memory pressure). Free the skb before returning, matching the error handling already used for the pskb_expand_head() failure path in the same function.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 16b1c4e01c89ba07367461e0bc4cb84993c2d027 before 83a765cbd7b4d11b0b9fa1bb9d941ae911a2159b; affected 16b1c4e01c89ba07367461e0bc4cb84993c2d027 before 1c63303659a2264bd55d9813df74cb4caeed5922; affected 16b1c4e01c89ba07367461e0bc4cb84993c2d027 before 2be5091fa693b9119ad25a8bb8c149d236a23ade; affected 16b1c4e01c89ba07367461e0bc4cb84993c2d027 before 58733b1dd46bb231d9d279c132a20ee46da1b664; affected 16b1c4e01c89ba07367461e0bc4cb84993c2d027 before 4039cd807a5a46dc5f7618fffae926b8ad8455eb; affected 16b1c4e01c89ba07367461e0bc4cb84993c2d027 before 1f428e30947395d9b9aacee03e25a4e6cfcad7a4 |
| Linux / Linux | affected 5.17; unaffected 0 before 5.17; unaffected 6.1.183 through 6.1.*; unaffected 6.6.152 through 6.6.*; unaffected 6.12.104 through 6.12.*; unaffected 6.18.45 through 6.18.*; unaffected 7.1.9 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/83a765cbd7b4d11b0b9fa1bb9d941ae911a2159b
- https://git.kernel.org/stable/c/1c63303659a2264bd55d9813df74cb4caeed5922
- https://git.kernel.org/stable/c/2be5091fa693b9119ad25a8bb8c149d236a23ade
- https://git.kernel.org/stable/c/58733b1dd46bb231d9d279c132a20ee46da1b664
- https://git.kernel.org/stable/c/4039cd807a5a46dc5f7618fffae926b8ad8455eb
- https://git.kernel.org/stable/c/1f428e30947395d9b9aacee03e25a4e6cfcad7a4
ADP enrichment
No English description supplied.
No references supplied.