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CVE-2026-80904— net/tls: Fail tls_sw_splice_read() after a failed async decrypt

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 5.19版本至7.2之前版本存在安全漏洞，该漏洞源于net/tls的tls_sw_splice_read函数在异步解密失败后未检查async_wait.err错误状态，可能导致未认证的记录通过splice继续传递。

AI Predicted 3.7 Difficulty: Hard EPSS 0.16% · P6

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux f314bfee81b1bf8e01168177b2f65f24eb8da63a< a808aadff634c7a408b2ab84d5919e9a741fdb5b affected
f314bfee81b1bf8e01168177b2f65f24eb8da63a< 06c2a53604fa1dc4820063828d7dadb3675b7af8 affected
f314bfee81b1bf8e01168177b2f65f24eb8da63a< 18ae1e95f20867106a28820c208a9cec99dda861 affected
f314bfee81b1bf8e01168177b2f65f24eb8da63a< 82d9269f01ebfd835b6256aa17016a974cbbc647 affected
f314bfee81b1bf8e01168177b2f65f24eb8da63a< 4b177911eb9f799e9841c2f87c75b08cb112757a affected
f314bfee81b1bf8e01168177b2f65f24eb8da63a< 976df67f463db1fddaf2a32fb04f57ad2891a23d affected
5.19 affected
< 5.19 unaffected
… +6 more rows
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I. Basic Information for CVE-2026-80904

Vulnerability Information
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Vulnerability Title
net/tls: Fail tls_sw_splice_read() after a failed async decrypt
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net/tls: Fail tls_sw_splice_read() after a failed async decrypt When an async decrypt fails, tls_decrypt_done() records the error in ctx->async_wait.err and calls tls_err_abort(), which stores it in sk_err. tls_sw_recvmsg() and tls_sw_read_sock() each read async_wait.err once they hold the reader lock and fail the call: a record that did not authenticate breaks the connection. tls_sw_splice_read() has no such check, and sk_err does not stand in for one. tls_rx_rec_wait() tests sk_err only inside the loop it skips whenever a record is already parsed, and the first reader to reach sock_error() clears it, while async_wait.err persists. A splice therefore keeps delivering records on a connection that recvmsg() and read_sock() refuse to read. Read async_wait.err in tls_sw_splice_read() as the other two readers do.
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 5.19版本至7.2之前版本存在安全漏洞，该漏洞源于net/tls的tls_sw_splice_read函数在异步解密失败后未检查async_wait.err错误状态，可能导致未认证的记录通过splice继续传递。
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 f314bfee81b1bf8e01168177b2f65f24eb8da63a ~ a808aadff634c7a408b2ab84d5919e9a741fdb5b -
Linux Linux 5.19 -

II. Public POCs for CVE-2026-80904

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III. Intelligence Information for CVE-2026-80904

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Patches & Fixes for CVE-2026-80904 (6)

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

CVE-2026-80864 RDMA/rxe: Fix responder UAF on IB_QP_MAX_DEST_RD_ATOMIC modify_qp
CVE-2026-80855 fuse: fix invalidate lock leak on open O_TRUNC DAX failure
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-2026-80869 ntfs: bound the attribute-list entry in ntfs_read_inode_mount()
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-2026-80870 drm/amdkfd: Validate CRIU-restored IDs before idr_alloc
CVE-2026-80867 alpha/PCI: Add security_locked_down() check to pci_mmap_resource()
CVE-2026-80865 bpf: Add missing access_ok call to copy_user_syms
CVE-2026-80866 tipc: avoid busy looping in tipc_exit_net()
CVE-2026-80854 usb: gadget: f_tcm: keep port count until LUN teardown completes
CVE-2026-80868 ntfs3: Allocate iomap inline_data using alloc_page

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-2026-80904

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