CVEvulnerability

CVE-2021-47240

7.1 HIGH Published 2024-05-21 Modified 2026-08-04 Official page ↗
Status
Modified
Published
2024-05-21
Last modified
2026-08-04
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
8.4 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected])
7.1 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Weaknesses
CWE-125

Description

In the Linux kernel, the following vulnerability has been resolved: net: qrtr: fix OOB Read in qrtr_endpoint_post Syzbot reported slab-out-of-bounds Read in qrtr_endpoint_post. The problem was in wrong _size_ type: if (len != ALIGN(size, 4) + hdrlen) goto err; If size from qrtr_hdr is 4294967293 (0xfffffffd), the result of ALIGN(size, 4) will be 0. In case of len == hdrlen and size == 4294967293 in header this check won't fail and skb_put_data(skb, data + hdrlen, size); will read out of bound from data, which is hdrlen allocated block.

Affected configurations

• linux linux kernel (>= 4.15 < 4.19.196) • linux linux kernel (>= 4.20 < 5.4.128) • linux linux kernel (>= 5.5 < 5.10.46) • linux linux kernel (>= 5.11 < 5.12.13) • linux linux kernel 5.13

Related

Weakness · CWE (1)

  • CWE-125 Out-of-bounds Read weakness

References