CVE-2022-50709— wifi: ath9k: avoid uninit memory read in ath9k_htc_rx_msg()
Affected Version Matrix 18
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | fb9987d0f748c983bb795a86f47522313f701a08< f3d2a3b7e290d0bdbddfcee5a6c3d922e2b7e02a | affected |
fb9987d0f748c983bb795a86f47522313f701a08< 84242f15f911f34aec9b22f99d1e9bff19723dbe | affected | ||
fb9987d0f748c983bb795a86f47522313f701a08< 2c485f4f2a64258acc5228e78ffb828c68d9e770 | affected | ||
fb9987d0f748c983bb795a86f47522313f701a08< 9661724f6206bd606ecf13acada676a9975d230b | affected | ||
fb9987d0f748c983bb795a86f47522313f701a08< b1b4144508adfc585e43856b31baaf9008a3beb4 | affected | ||
fb9987d0f748c983bb795a86f47522313f701a08< 0d2649b288b7b9484e3d4380c0d6c4720a17e473 | affected | ||
fb9987d0f748c983bb795a86f47522313f701a08< 4891a50f5ed8bfcb8f2a4b816b0676f398687783 | affected | ||
fb9987d0f748c983bb795a86f47522313f701a08< b383e8abed41cc6ff1a3b34de75df9397fa4878c | affected | ||
| … +10 more rows | |||
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I. Basic Information for CVE-2022-50709
Vulnerability Information
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Vulnerability Title
wifi: ath9k: avoid uninit memory read in ath9k_htc_rx_msg()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k: avoid uninit memory read in ath9k_htc_rx_msg() syzbot is reporting uninit value at ath9k_htc_rx_msg() [1], for ioctl(USB_RAW_IOCTL_EP_WRITE) can call ath9k_hif_usb_rx_stream() with pkt_len = 0 but ath9k_hif_usb_rx_stream() uses __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC) based on an assumption that pkt_len is valid. As a result, ath9k_hif_usb_rx_stream() allocates skb with uninitialized memory and ath9k_htc_rx_msg() is reading from uninitialized memory. Since bytes accessed by ath9k_htc_rx_msg() is not known until ath9k_htc_rx_msg() is called, it would be difficult to check minimal valid pkt_len at "if (pkt_len > 2 * MAX_RX_BUF_SIZE) {" line in ath9k_hif_usb_rx_stream(). We have two choices. One is to workaround by adding __GFP_ZERO so that ath9k_htc_rx_msg() sees 0 if pkt_len is invalid. The other is to let ath9k_htc_rx_msg() validate pkt_len before accessing. This patch chose the latter. Note that I'm not sure threshold condition is correct, for I can't find details on possible packet length used by this protocol.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未验证数据包长度，可能导致读取未初始化内存。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2022-50709
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Other References for CVE-2022-50709 (4)
Same Patch Batch · Linux · 2025-12-24 · 322 CVEs total
| CVE-2022-50755 | udf: Avoid double brelse() in udf_rename() | |
| CVE-2022-50765 | RISC-V: kexec: Fix memory leak of elf header buffer | |
| CVE-2022-50764 | ipv6/sit: use DEV_STATS_INC() to avoid data-races | |
| CVE-2022-50763 | crypto: marvell/octeontx - prevent integer overflows | |
| CVE-2022-50762 | fs/ntfs3: Avoid UBSAN error on true_sectors_per_clst() | |
| CVE-2022-50760 | drm/amdgpu: Fix PCI device refcount leak in amdgpu_atrm_get_bios() | |
| CVE-2022-50761 | x86/xen: Fix memory leak in xen_init_lock_cpu() | |
| CVE-2022-50759 | media: i2c: ov5648: Free V4L2 fwnode data on unbind | |
| CVE-2022-50758 | staging: vt6655: fix potential memory leak | |
| CVE-2022-50756 | nvme-pci: fix mempool alloc size | |
| CVE-2022-50757 | media: camss: Clean up received buffers on failed start of streaming | |
| CVE-2022-50749 | acct: fix potential integer overflow in encode_comp_t() | |
| CVE-2022-50746 | erofs: validate the extent length for uncompressed pclusters | |
| CVE-2022-50747 | hfs: Fix OOB Write in hfs_asc2mac | |
| CVE-2022-50748 | ipc: mqueue: fix possible memory leak in init_mqueue_fs() | |
| CVE-2022-50750 | drm/panel/panel-sitronix-st7701: Remove panel on DSI attach failure | |
| CVE-2022-50752 | md/raid5: Remove unnecessary bio_put() in raid5_read_one_chunk() | |
| CVE-2022-50753 | f2fs: fix to do sanity check on summary info | |
| CVE-2022-50754 | apparmor: fix a memleak in multi_transaction_new() | |
| CVE-2022-50766 | btrfs: set generation before calling btrfs_clean_tree_block in btrfs_init_new_buffer |
Showing top 20 of 322 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
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