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CVE-2026-80833— crypto: sun8i-ss - Remove crypto_rng interface

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于sun8i-ss驱动的generate()函数使用wait_for_completion_interruptible_timeout()时未处理信号以关闭DMA操作，导致释放后重用，且memcpy(ctx->seed, d + dlen, ctx->slen)操作存在缓冲区过度读取问题。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.18% · P7

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux ac2614d721dea2ff273af19c6c5d508d58a2bb3e< 9127d2a88c1795ddc4ba7687fea01cab1908fae1 affected
ac2614d721dea2ff273af19c6c5d508d58a2bb3e< 64f3406ad082c00fb7a80240a24943ccb6d9a538 affected
ac2614d721dea2ff273af19c6c5d508d58a2bb3e< 6117968fe2cdcde28ac3aa6ec814485320af4049 affected
ac2614d721dea2ff273af19c6c5d508d58a2bb3e< a41e4ba94ad4571aa2e566baa395e6e871e0fd4f affected
ac2614d721dea2ff273af19c6c5d508d58a2bb3e< d29ccf9eeb67d775221e49a079caa1af83427afa affected
ac2614d721dea2ff273af19c6c5d508d58a2bb3e< 7c257a295e05ceb8f78aa3efecc4e9ce19c3313f affected
ac2614d721dea2ff273af19c6c5d508d58a2bb3e< 8ab58786b4c63b8f1b6c522f33bb67a3c8c2791f affected
ac2614d721dea2ff273af19c6c5d508d58a2bb3e< a78446ee6fae86ac8733f120e3ffce2e5d9384f5 affected
… +10 more rows
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I. Basic Information for CVE-2026-80833

Vulnerability Information
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Vulnerability Title
crypto: sun8i-ss - Remove crypto_rng interface
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: crypto: sun8i-ss - Remove crypto_rng interface Since the crypto_rng interface for hardware PRNGs is unused and is redundant with hwrng and the actual Linux RNG, it's being phased out. Most drivers for it were already removed. Go ahead and remove the sun8i-ss support which is one of the only remaining ones. As usual for crypto_rng, this driver was also buggy: its ->generate() function had a use-after-free vulnerability due to using wait_for_completion_interruptible_timeout() without handling shutting down the DMA operation if a signal is sent. Also, it had a buffer overread bug in the line 'memcpy(ctx->seed, d + dlen, ctx->slen);'. There's no point in fixing these bugs separately only to remove the code anyway, so this commit is marked with Fixes and Cc stable.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于sun8i-ss驱动的generate()函数使用wait_for_completion_interruptible_timeout()时未处理信号以关闭DMA操作，导致释放后重用，且memcpy(ctx->seed, d + dlen, ctx->slen)操作存在缓冲区过度读取问题。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux ac2614d721dea2ff273af19c6c5d508d58a2bb3e ~ 9127d2a88c1795ddc4ba7687fea01cab1908fae1 -
Linux Linux 5.10 -

II. Public POCs for CVE-2026-80833

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III. Intelligence Information for CVE-2026-80833

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Patches & Fixes for CVE-2026-80833 (7)

Same Patch Batch · Linux · 2026-09-04 · 156 CVEs total

CVE-2026-80865 bpf: Add missing access_ok call to copy_user_syms
CVE-2026-80856 fuse: fix invalidate lock leak on setattr writeback failure
CVE-2026-80857 fuse: wait for FR_FINISHED on abort_on_kill to prevent use-after-free
CVE-2026-80858 fuse: publish io-uring queues with release semantics
CVE-2026-80859 fuse: fix missing barrier when checking io-uring readiness
CVE-2026-80860 fuse: fix race between interrupt and resend
CVE-2026-80861 usb: xhci: bail out of setup if the controller is inaccessible
CVE-2026-80862 nvme-tcp: fix usage of page_frag_cache
CVE-2026-80863 RDMA/rxe: Fix OOB in free_rd_atomic_resources()
CVE-2026-80864 RDMA/rxe: Fix responder UAF on IB_QP_MAX_DEST_RD_ATOMIC modify_qp
CVE-2026-80870 drm/amdkfd: Validate CRIU-restored IDs before idr_alloc
CVE-2026-80874 arm64: dts: renesas: ironhide: Describe inline ECC carveouts
CVE-2026-80873 KVM: arm64: nv: Write ESR_EL2 for injected nested SError exceptions
CVE-2026-80872 ALSA: hda/tas2781: Cancel async firmware request at unbind
CVE-2026-80871 crypto: xilinx-trng - Remove crypto_rng interface
CVE-2026-80868 ntfs3: Allocate iomap inline_data using alloc_page
CVE-2026-80866 tipc: avoid busy looping in tipc_exit_net()
CVE-2026-80867 alpha/PCI: Add security_locked_down() check to pci_mmap_resource()
CVE-2026-80855 fuse: fix invalidate lock leak on open O_TRUNC DAX failure
CVE-2026-80869 ntfs: bound the attribute-list entry in ntfs_read_inode_mount()

Showing top 20 of 156 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-80833

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