CVE-2023-52531

Aliases:UBUNTU-CVE-2023-52531DEBIAN-CVE-2023-52531
Advisory lineage Upstream: 0 Downstream: 24
Analyzed
Published: 02 Mar 2024, 21:52
Last modified:11 May 2026, 19:29

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.24% LOW
0% probability +0.22%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

02 Mar 2024, 21:52
Published
Vulnerability first disclosed
11 May 2026, 19:29
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: Fix a memory corruption issue A few lines above, space is kzalloc()'ed for: sizeof(struct iwl_nvm_data) + sizeof(struct ieee80211_channel) + sizeof(struct ieee80211_rate) 'mvm->nvm_data' is a 'struct iwl_nvm_data', so it is fine. At the end of this structure, there is the 'channels' flex array. Each element is of type 'struct ieee80211_channel'. So only 1 element is allocated in this array. When doing: mvm->nvm_data->bands[0].channels = mvm->nvm_data->channels; We point at the first element of the 'channels' flex array. So this is fine. However, when doing: mvm->nvm_data->bands[0].bitrates = (void *)((u8 *)mvm->nvm_data->channels + 1); because of the "(u8 *)" cast, we add only 1 to the address of the beginning of the flex array. It is likely that we want point at the 'struct ieee80211_rate' allocated just after. Remove the spurious casting so that the pointer arithmetic works as expected.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.24%• Percentile: 15%

Techniques & Countermeasures

  • CWE-787•Out-of-bounds Write

    The product writes data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • debian•linux

    all | < 6.1.64-1 | < 6.5.8-1 | < 6.5.8-1

  • ubuntu•linux

    all | < 4.4.0-261.295 | < 4.15.0-231.243 | < 5.4.0-200.220 | < 5.15.0-94.104

  • ubuntu•linux-allwinner-5.19

    all

  • ubuntu•linux-aws

    < 4.4.0-1138.144 | < 4.4.0-1176.191 | < 4.15.0-1175.188 | < 5.4.0-1135.145 | < 5.15.0-1053.58

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.11

    all

  • ubuntu•linux-aws-5.13

    all

  • ubuntu•linux-aws-5.15

    < 5.15.0-1053.58~20.04.1

  • ubuntu•linux-aws-5.19

    all

  • ubuntu•linux-aws-5.3

    all

  • ubuntu•linux-aws-5.4

    < 5.4.0-1135.145~18.04.1

  • ubuntu•linux-aws-5.8

    all

  • ubuntu•linux-aws-6.2

    all

  • ubuntu•linux-aws-6.5

    all

  • ubuntu•linux-aws-fips

    < 4.15.0-2113.119 | all | < 5.4.0-1135.145+fips1 | < 5.15.0-1053.58+fips1

  • ubuntu•linux-aws-hwe

    < 4.15.0-1175.188~16.04.1

  • ubuntu•linux-azure

    < 4.15.0-1183.198~14.04.1 | < 4.15.0-1183.198~16.04.1 | all | < 5.4.0-1140.147 | < 5.15.0-1056.64

  • ubuntu•linux-azure-4.15

    < 4.15.0-1183.198

  • ubuntu•linux-azure-5.11

    all

  • ubuntu•linux-azure-5.13

    all

  • ubuntu•linux-azure-5.15

    < 5.15.0-1056.64~20.04.1

  • ubuntu•linux-azure-5.19

    all

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-5.4

    < 5.4.0-1140.147~18.04.1

  • ubuntu•linux-azure-5.8

    all

  • ubuntu•linux-azure-6.2

    all

  • ubuntu•linux-azure-6.5

    all

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fde

    all | < 5.15.0-1056.64.1 | all

  • ubuntu•linux-azure-fde-5.19

    all

  • ubuntu•linux-azure-fde-6.2

    all

  • ubuntu•linux-azure-fde-6.8

    all

  • ubuntu•linux-azure-fips

    < 4.15.0-2092.98 | all | < 5.4.0-1140.147+fips1

  • ubuntu•linux-bluefield

    all | < 5.4.0-1095.102 | < 5.15.0-1035.37

  • ubuntu•linux-fips

    < 4.4.0-1107.114 | all | < 4.15.0-1129.140 | < 5.4.0-1109.119 | < 5.15.0-94.104+fips1

  • ubuntu•linux-gcp

    < 4.15.0-1168.185~16.04.1 | all | < 5.4.0-1139.148 | < 5.15.0-1051.59

  • ubuntu•linux-gcp-4.15

    < 4.15.0-1168.185

  • ubuntu•linux-gcp-5.11

    all

  • ubuntu•linux-gcp-5.13

    all

  • ubuntu•linux-gcp-5.15

    < 5.15.0-1051.59~20.04.1

  • ubuntu•linux-gcp-5.19

    all

  • ubuntu•linux-gcp-5.3

    all

  • ubuntu•linux-gcp-5.4

    < 5.4.0-1139.148~18.04.1

  • ubuntu•linux-gcp-5.8

    all

  • ubuntu•linux-gcp-6.2

    all

  • ubuntu•linux-gcp-6.5

    all

  • ubuntu•linux-gcp-fips

    < 4.15.0-2076.81 | all | < 5.4.0-1139.148+fips1 | < 5.15.0-1055.63+fips2

  • ubuntu•linux-gke

    all | < 5.15.0-1050.55

  • ubuntu•linux-gke-4.15

    all

  • ubuntu•linux-gke-5.15

    all

Showing first 50 affected entries in server-rendered view.

References (18)