---
id: CVE-2024-53091
title: 'bpf: Add sk_is_inet and IS_ICSK check in tls_sw_has_ctx_tx/rx'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  bpf: Add sk_is_inet and IS_ICSK check in tls_sw_has_ctx_tx/rx

  As the introduction of the support for vsock and unix sockets in sockmap,
  tls_sw_has_ctx_tx/rx cannot pre…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 94531cfcbe79c3598acf96806627b2137ca32eb9 <
    e675829d287791dd90b70a9413fa7cfb8308830c
  - >-
    Linux >= 94531cfcbe79c3598acf96806627b2137ca32eb9 <
    a078a480ff3f43d74d8a024ae10c3c7daf6db149
  - >-
    Linux >= 94531cfcbe79c3598acf96806627b2137ca32eb9 <
    6781cfa93a6a1b7f5be6819a5a2dd8f30f47ca26
  - >-
    Linux >= 94531cfcbe79c3598acf96806627b2137ca32eb9 <
    44d0469f79bd3d0b3433732877358df7dc6b17b1
  - Linux 5.15
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2025-10-01T20:11:30.644487Z'
published: '2024-11-21'
updated: '2026-10-30'
sourceUpdated: '2026-10-30T12:20:00.071Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2024-53091'
references:
  - url: 'https://git.kernel.org/stable/c/e675829d287791dd90b70a9413fa7cfb8308830c'
  - url: 'https://git.kernel.org/stable/c/a078a480ff3f43d74d8a024ae10c3c7daf6db149'
  - url: 'https://git.kernel.org/stable/c/6781cfa93a6a1b7f5be6819a5a2dd8f30f47ca26'
  - url: 'https://git.kernel.org/stable/c/44d0469f79bd3d0b3433732877358df7dc6b17b1'
tags:
  - cve.org
epss: 0.0023
epssPercentile: 0.13903
ingestedAt: '2026-11-03T14:47:02.514Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

bpf: Add sk_is_inet and IS_ICSK check in tls_sw_has_ctx_tx/rx

As the introduction of the support for vsock and unix sockets in sockmap,
tls_sw_has_ctx_tx/rx cannot presume the socket passed in must be IS_ICSK.
vsock and af_unix sockets have vsock_sock and unix_sock instead of
inet_connection_sock. For these sockets, tls_get_ctx may return an invalid
pointer and cause page fault in function tls_sw_ctx_rx.

BUG: unable to handle page fault for address: 0000000000040030
Workqueue: vsock-loopback vsock_loopback_work
RIP: 0010:sk_psock_strp_data_ready+0x23/0x60
Call Trace:
 ? __die+0x81/0xc3
 ? no_context+0x194/0x350
 ? do_page_fault+0x30/0x110
 ? async_page_fault+0x3e/0x50
 ? sk_psock_strp_data_ready+0x23/0x60
 virtio_transport_recv_pkt+0x750/0x800
 ? update_load_avg+0x7e/0x620
 vsock_loopback_work+0xd0/0x100
 process_one_work+0x1a7/0x360
 worker_thread+0x30/0x390
 ? create_worker+0x1a0/0x1a0
 kthread+0x112/0x130
 ? __kthread_cancel_work+0x40/0x40
 ret_from_fork+0x1f/0x40

v2:
  - Add IS_ICSK check
v3:
  - Update the commits in Fixes

## Affected

- `Linux >= 94531cfcbe79c3598acf96806627b2137ca32eb9 < e675829d287791dd90b70a9413fa7cfb8308830c`
- `Linux >= 94531cfcbe79c3598acf96806627b2137ca32eb9 < a078a480ff3f43d74d8a024ae10c3c7daf6db149`
- `Linux >= 94531cfcbe79c3598acf96806627b2137ca32eb9 < 6781cfa93a6a1b7f5be6819a5a2dd8f30f47ca26`
- `Linux >= 94531cfcbe79c3598acf96806627b2137ca32eb9 < 44d0469f79bd3d0b3433732877358df7dc6b17b1`
- `Linux 5.15`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.