CVE-2022-50179
ath9k: fix use-after-free in ath9k_hif_usb_rx_cb
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: ath9k: fix use-after-free in ath9k_hif_usb_rx_cb Syzbot reported use-after-free Read in ath9k_hif_usb_rx_cb() [0]. The problem was in incorrect htc_handle->drv_priv initialization. Probable call trace which can trigger use-after-free: ath9k_htc_probe_device() /* htc_handle->drv_priv = priv; */ ath9k_htc_wait_for_target() <--- Failed ieee80211_free_hw() <--- priv pointer is freed <IRQ> ... ath9k_hif_usb_rx_cb() ath9k_hif_usb_rx_stream() RX_STAT_INC() <--- htc_handle->drv_priv access In order to not add fancy protection for drv_priv we can move htc_handle->drv_priv initialization at the end of the ath9k_htc_probe_device() and add helper macro to make all *_STAT_* macros NULL safe, since syzbot has reported related NULL deref in that macros [1]
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.26% · top 82% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
- affected fb9987d0f748c983bb795a86f47522313f701a08 – < 62bc1ea5c7401d77eaf73d0c6a15f3d2e742856e
- affected fb9987d0f748c983bb795a86f47522313f701a08 – < ab7a0ddf5f1cdec63cb21840369873806fc36d80
- affected fb9987d0f748c983bb795a86f47522313f701a08 – < e9e21206b8ea62220b486310c61277e7ebfe7cec
- affected fb9987d0f748c983bb795a86f47522313f701a08 – < eccd7c3e2596b574241a7670b5b53f5322f470e5
- affected fb9987d0f748c983bb795a86f47522313f701a08 – < 03ca957c5f7b55660957eda20b5db4110319ac7a
- affected fb9987d0f748c983bb795a86f47522313f701a08 – < 6b14ab47937ba441e75e8dbb9fbfc9c55efa41c6
- affected fb9987d0f748c983bb795a86f47522313f701a08 – < b66ebac40f64336ae2d053883bee85261060bd27
- affected fb9987d0f748c983bb795a86f47522313f701a08 – < 0ac4827f78c7ffe8eef074bc010e7e34bc22f533
- affected 2.6.35
- unaffected < 2.6.35
- unaffected 4.14.291 – ≤ 4.14.*
- unaffected 4.19.256 – ≤ 4.19.*
- unaffected 5.4.211 – ≤ 5.4.*
- unaffected 5.10.137 – ≤ 5.10.*
- unaffected 5.15.61 – ≤ 5.15.*
- unaffected 5.18.18 – ≤ 5.18.*
- unaffected 5.19.2 – ≤ 5.19.*
- unaffected 6.0 – ≤ *
References (8)
- https://git.kernel.org/stable/c/62bc1ea5c7401d77eaf73d0c6a15f3d2e742856e (opens in a new tab)
- https://git.kernel.org/stable/c/ab7a0ddf5f1cdec63cb21840369873806fc36d80 (opens in a new tab)
- https://git.kernel.org/stable/c/e9e21206b8ea62220b486310c61277e7ebfe7cec (opens in a new tab)
- https://git.kernel.org/stable/c/eccd7c3e2596b574241a7670b5b53f5322f470e5 (opens in a new tab)
- https://git.kernel.org/stable/c/03ca957c5f7b55660957eda20b5db4110319ac7a (opens in a new tab)
- https://git.kernel.org/stable/c/6b14ab47937ba441e75e8dbb9fbfc9c55efa41c6 (opens in a new tab)
- https://git.kernel.org/stable/c/b66ebac40f64336ae2d053883bee85261060bd27 (opens in a new tab)
- https://git.kernel.org/stable/c/0ac4827f78c7ffe8eef074bc010e7e34bc22f533 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2022-50179)Record last updated .