Answer in brief
CVE-2023-53199 records a Medium severity (CVSS 5.5) vulnerability in wifi: ath9k: hif_usb: clean up skbs if ath9k_hif_usb_rx_stream() fails. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=44b23b488d44e56d467764ecb661830e5b02b308 <3fc6401fafde11712a83089fa2cc874cfd10e2cd || >=44b23b488d44e56d467764ecb661830e5b02b308 <cd8316767099920a5d41feed1afab0c482a43e9f || >=44b23b488d44e56d467764ecb661830e5b02b308 <f26dd69f61eff2eedf5df2d199bdd23108309947 || >=44b23b488d44e56d467764ecb661830e5b02b308 <61490d2710277e8a55009b7682456ae22f8087cf || >=44b23b488d44e56d467764ecb661830e5b02b308 <9acdec72787af1bc8ed92711b52118c8e3e638a2 || >=44b23b488d44e56d467764ecb661830e5b02b308 <c766e37fccd5a5c5059be7efcd9618bf8a2c17c3 || >=44b23b488d44e56d467764ecb661830e5b02b308 <0af54343a76263a12dbae7fafb64eb47c4a6ad38 | 3fc6401fafde11712a83089fa2cc874cfd10e2cd, cd8316767099920a5d41feed1afab0c482a43e9f, f26dd69f61eff2eedf5df2d199bdd23108309947, 61490d2710277e8a55009b7682456ae22f8087cf, 9acdec72787af1bc8ed92711b52118c8e3e638a2, c766e37fccd5a5c5059be7efcd9618bf8a2c17c3, 0af54343a76263a12dbae7fafb64eb47c4a6ad38 |
| Linux/Linuxgeneric | 2.6.38 | Not reported |
Published upstream
Sep 15, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.