5.5

CVE-2023-53199

wifi: ath9k: hif_usb: clean up skbs if ath9k_hif_usb_rx_stream() fails

In the Linux kernel, the following vulnerability has been resolved:

wifi: ath9k: hif_usb: clean up skbs if ath9k_hif_usb_rx_stream() fails

Syzkaller detected a memory leak of skbs in ath9k_hif_usb_rx_stream().
While processing skbs in ath9k_hif_usb_rx_stream(), the already allocated
skbs in skb_pool are not freed if ath9k_hif_usb_rx_stream() fails. If we
have an incorrect pkt_len or pkt_tag, the input skb is considered invalid
and dropped. All the associated packets already in skb_pool should be
dropped and freed. Added a comment describing this issue.

The patch also makes remain_skb NULL after being processed so that it
cannot be referenced after potential free. The initialization of hif_dev
fields which are associated with remain_skb (rx_remain_len,
rx_transfer_len and rx_pad_len) is moved after a new remain_skb is
allocated.

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 2.6.38 < 4.19.276
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.235
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.173
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.99
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.16
Linux ≫ Linux Kernel Version >= 6.2 < 6.2.3
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.15% 0.041
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-772 Missing Release of Resource after Effective Lifetime

The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed.

https://git.kernel.org/stable/c/3fc6401fafde11712a83089fa2cc874cfd10e2cd
Patch
https://git.kernel.org/stable/c/cd8316767099920a5d41feed1afab0c482a43e9f
Patch
https://git.kernel.org/stable/c/f26dd69f61eff2eedf5df2d199bdd23108309947
Patch
https://git.kernel.org/stable/c/61490d2710277e8a55009b7682456ae22f8087cf
Patch
https://git.kernel.org/stable/c/9acdec72787af1bc8ed92711b52118c8e3e638a2
Patch
https://git.kernel.org/stable/c/c766e37fccd5a5c5059be7efcd9618bf8a2c17c3
Patch
https://git.kernel.org/stable/c/0af54343a76263a12dbae7fafb64eb47c4a6ad38
Patch