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CVE-2026-46041— greybus: gb-beagleplay: fix sleep in atomic context in hdlc_tx_frames()

AI Predicted 5.5 Difficulty: Moderate EPSS 0.02% · P7

Possible ATT&CK Techniques 1AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 10

VendorProductVersion RangeStatus
LinuxLinuxec558bbfea671ac020a6dc6be8bf8f0ee556cce0< 9f2b87bcdfed55145acbf932dc12f2c057145cadaffected
ec558bbfea671ac020a6dc6be8bf8f0ee556cce0< b2801647c203a38e013802e9e9616b5bfac64968affected
ec558bbfea671ac020a6dc6be8bf8f0ee556cce0< 51667fe2d9294d66e0228b9f51d1f01b6680a641affected
ec558bbfea671ac020a6dc6be8bf8f0ee556cce0< 6b526dca0966f2370835765019a54319b78fca8daffected
6.7affected
< 6.7unaffected
6.12.86≤ 6.12.*unaffected
6.18.27≤ 6.18.*unaffected
… +2 more rows
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I. Basic Information for CVE-2026-46041

Vulnerability Information
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Vulnerability Title
greybus: gb-beagleplay: fix sleep in atomic context in hdlc_tx_frames()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: greybus: gb-beagleplay: fix sleep in atomic context in hdlc_tx_frames() hdlc_append() calls usleep_range() to wait for circular buffer space, but it is called with tx_producer_lock (a spinlock) held via hdlc_tx_frames() -> hdlc_append_tx_frame()/hdlc_append_tx_u8()/etc. Sleeping while holding a spinlock is illegal and can trigger "BUG: scheduling while atomic". Fix this by moving the buffer-space wait out of hdlc_append() and into hdlc_tx_frames(), before the spinlock is acquired. The new flow: 1. Pre-calculate the worst-case encoded frame length. 2. Wait (with sleep) outside the lock until enough space is available, kicking the TX consumer work to drain the buffer. 3. Acquire the spinlock, re-verify space, and write the entire frame atomically. This ensures that sleeping only happens without any lock held, and that frames are either fully enqueued or not written at all. This bug is found by CodeQL static analysis tool (interprocedural sleep-in-atomic query) and my code review.
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gb-beagleplay驱动中hdlc_append函数在持有自旋锁时调用usleep_range，可能导致原子上下文中的调度错误。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux ec558bbfea671ac020a6dc6be8bf8f0ee556cce0 ~ 9f2b87bcdfed55145acbf932dc12f2c057145cad -
LinuxLinux 6.7 -

II. Public POCs for CVE-2026-46041

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III. Intelligence Information for CVE-2026-46041

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Patches & Fixes for CVE-2026-46041 (4)

Same Patch Batch · Linux · 2026-05-27 · 276 CVEs total

CVE-2026-459729.8 CRITICALsmb: client: fix potential UAF and double free in smb2_open_file()
CVE-2026-458989.8 CRITICALRDMA/iwcm: Fix workqueue list corruption by removing work_list
CVE-2026-459889.8 CRITICALrxrpc: Fix re-decryption of RESPONSE packets
CVE-2026-460399.8 CRITICALrxgk: Fix potential integer overflow in length check
CVE-2026-460439.1 CRITICALRDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv
CVE-2026-459458.8 HIGHiommu/vt-d: Fix race condition during PASID entry replacement
CVE-2026-460568.8 HIGHBluetooth: hci_event: fix potential UAF in SSP passkey handlers
CVE-2026-460378.2 HIGHipv4: icmp: validate reply type before using icmp_pointers
CVE-2026-458438.2 HIGHslip: bound decode() reads against the compressed packet length
CVE-2026-460998.1 HIGHnet: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels
CVE-2026-460108.1 HIGHrxrpc: Fix error handling in rxgk_extract_token()
CVE-2026-460767.9 HIGHKVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1
CVE-2026-459707.8 HIGHbonding: alb: fix UAF in rlb_arp_recv during bond up/down
CVE-2026-459807.8 HIGHaccel/amdxdna: Stop job scheduling across aie2_release_resource()
CVE-2026-459317.8 HIGHaccel/amdxdna: Hold mm structure across iommu_sva_unbind_device()
CVE-2026-460537.8 HIGHnet: rds: fix MR cleanup on copy error
CVE-2026-459297.8 HIGHovpn: fix possible use-after-free in ovpn_net_xmit
CVE-2026-458527.8 HIGHRDMA/rxe: Fix double free in rxe_srq_from_init
CVE-2026-458787.8 HIGHdrm/amdkfd: Fix watch_id bounds checking in debug address watch v2
CVE-2026-460587.8 HIGHmedia: amphion: Fix race between m2m job_abort and device_run

Showing top 20 of 276 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-46041

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