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CVE-2026-93824— tls: reject the combination of TLS and sockmap

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.

在 Linux 内核中，已解决以下漏洞： tls：禁止 TLS 与 sockmap 的组合使用 TLS 与 sockmap（BPF psock）集成隐藏了许多潜在缺陷。 这些缺陷对实际用户的相关程度可能各不相同，但显然均可被利用。 由于未发现任何人在积极使用此集成方案，因此我们决定拒绝该配置。 此前， 已通过 检查拒绝将 TLS 套接字添加到 sockmap 中。 我们需要拒绝配置 TLS 密钥（而非直接添加用户态协议层（ULP）本身）的尝试，因为如果在 ULP 安装之前进行检查，可能会与并行添加 sockmap

AI Predicted 7.5 Difficulty: Moderate EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux d3b18ad31f93d0b6bae105c679018a1ba7daa9ca< c4896592744f30ff026f799947c5978bcfd7c8c7 affected
d3b18ad31f93d0b6bae105c679018a1ba7daa9ca< e26aa709454d48c3b3ef8d3100c8a04e7d9fd94e affected
d3b18ad31f93d0b6bae105c679018a1ba7daa9ca< c3d4d537337f69e405a36fa561e7292ee4148bf7 affected
d3b18ad31f93d0b6bae105c679018a1ba7daa9ca< a08e780b6cc1153cbff8be55de9ec9da809e344f affected
d3b18ad31f93d0b6bae105c679018a1ba7daa9ca< 460e6486617c17dd19abe8f3fc67d9a6fa25f8ca affected
4.20 affected
< 4.20 unaffected
6.1.189≤ 6.1.* unaffected
… +4 more rows
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I. Basic Information for CVE-2026-93824

Vulnerability Information
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Vulnerability Title
tls: reject the combination of TLS and sockmap
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: tls: reject the combination of TLS and sockmap TLS and sockmap (BPF psock) integration hides a lot of latent bugs. Bugs which may be more or less relevant for real users but they are definitely exploitable. We could not find anyone actively using this integration so let's reject this config. Adding a TLS socket to a sockmap was already rejected by sk_psock_init() through the inet_csk_has_ulp() check. We need to reject the attempts to configure the TLS keys (rather than adding the ULP itself) because checking prior to the ULP installation is tricky without risking a race with sockmap getting added in parallel (sockmap does not hold the socket lock). This patch is a minimal rejection of the feature. Subsequent patch in the series will do a light dead code removal. Full cleanup would require a major rewrite of the Tx path, we don't need skmsg any more.
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux d3b18ad31f93d0b6bae105c679018a1ba7daa9ca ~ c4896592744f30ff026f799947c5978bcfd7c8c7 -
Linux Linux 4.20 -

II. Public POCs for CVE-2026-93824

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III. Intelligence Information for CVE-2026-93824

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Patches & Fixes for CVE-2026-93824 (5)

Same Patch Batch · Linux · 2026-09-24 · 234 CVEs total

CVE-2026-93207 9.8 CRITICAL SUNRPC: Zero rpc_gss_wire_cred at svcauth_gss_decode_credbody() entry
CVE-2026-97413 9.8 CRITICAL RDMA/rtrs-srv: Fix integer underflow in process_read and process_write
CVE-2026-93228 9.1 CRITICAL svcrdma: Reject Write/Reply chunks with segcount 0
CVE-2026-93799 8.8 HIGH wifi: iwlwifi: mvm: validate sta_id in BA window status notif
CVE-2026-97442 8.8 HIGH wifi: ath11k: fix invalid data access in ath11k_dp_rx_h_undecap_nwifi
CVE-2026-97409 8.8 HIGH nvme-fc: Do not cancel requests in io target before it is initialized
CVE-2026-93806 8.8 HIGH wifi: cfg80211: validate assoc response length before status and IE access
CVE-2026-93793 8.8 HIGH wifi: iwlwifi: mvm: validate TX_CMD response layout
CVE-2026-93790 8.8 HIGH wifi: iwlwifi: mvm: fix out-of-bounds tid_data access in BA notif
CVE-2026-93284 8.8 HIGH drm/pagemap: dma-unmap pages before handling migration errors
CVE-2026-93280 8.8 HIGH greybus: audio: bound the topology section sizes against the fetched size
CVE-2026-97509 8.8 HIGH thunderbolt: Keep XDomain reference during the lifetime of a service
CVE-2026-93827 8.4 HIGH virtio-fs: avoid double-free on failed queue setup
CVE-2026-97450 8.4 HIGH ACPICA: validate handler object type in two places
CVE-2026-97452 8.4 HIGH ACPICA: Prevent adding invalid references
CVE-2026-97451 8.4 HIGH ACPICA: Fix integer overflow in acpi_ex_opcode_3A_1T_1R() (mid_op)
CVE-2026-97455 8.4 HIGH ACPICA: Fix use-after-free in acpi_ds_terminate_control_method()
CVE-2026-97433 8.2 HIGH nvme: validate FDP configuration descriptor sizes
CVE-2026-93787 8.1 HIGH smb: client: bound dirent name against end of SMB response in cifs_filldir
CVE-2026-93786 8.1 HIGH ksmbd: preserve VFS inherited POSIX ACL mask

Showing top 20 of 234 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-93824

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