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Review reviewHigh

CVE-2023-52768

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: wifi: wilc1000: use vmm_table as array in wilc struct Enabling KASAN and running some iperf tests raises some memory issues with vmm_table: BUG: KASAN: slab-out-of-bounds in wilc_wlan_handle_txq+0x6ac/0xdb4 Write of size 4 at addr c3a61540 by task wlan0-tx/95 KASAN detects that we are writing data beyond range allocated to vmm_table. There is indeed a mismatch between the size passed to allocator in wilc_wlan_init, and the range of possible indexes used later: allocation size is missing a multiplication by sizeof(u32)

CVSS
7.8
EPSS
0.24%
15.6% percentile
CISA KEV
Not listed
Published
2024.05.22
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.24%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: wifi: wilc1000: use vmm_table as array in wilc struct Enabling KASAN and running some iperf tests raises some memory issues with vmm_table: BUG: KASAN: slab-out-of-bounds in wilc_wlan_handle_txq+0x6ac/0xdb4 Write of size 4 at addr c3a61540 by task wlan0-tx/95 KASAN detects that we are writing data beyond range allocated to vmm_table. There is indeed a mismatch between the size passed to allocator in wilc_wlan_init, and the range of possible indexes used later: allocation size is missing a multiplication by sizeof(u32)

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 32dd0b22a5ba1dd296ccf2caf46ad44c3a8d5d98 < 541b3757fd443a68ed8d25968eae511a8275e7c8, >= 40b717bfcefab28a0656b8caa5e43d5449e5a671 < 4b0d6ddb6466d10df878a7787f175a0e4adc3e27, >= 40b717bfcefab28a0656b8caa5e43d5449e5a671 < 6aaf7cd8bdfe245d3c9a8b48fe70c2011965948e, >= 40b717bfcefab28a0656b8caa5e43d5449e5a671 < 3ce1c2c3999b232258f7aabab311d47dda75605c, >= 40b717bfcefab28a0656b8caa5e43d5449e5a671 < 05ac1a198a63ad66bf5ae8b7321407c102d40ef3, >= 5212d958f6518003cd98c9886f8e8aedcfc25741, >= 5.15.68 < 5.15.140, >= 5.19.9 < 5.20, >= 6.0, >= 5.19.9 < 6.1.64, >= 6.2 < 6.5.13, >= 6.6 < 6.6.3
Fixed versions
5.15.140, 6.1.64, 6.5.13, 6.6.3

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-129