Review reviewHigh

CVE-2024-46741

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: Fix double free of 'buf' in error path smatch warning: drivers/misc/fastrpc.c:1926 fastrpc_req_mmap() error: double free of 'buf' In fastrpc_req_mmap() error path, the fastrpc buffer is freed in fastrpc_req_munmap_impl() if unmap is successful. But in the end, there is an unconditional call to fastrpc_buf_free(). So the above case triggers the double free of fastrpc buf.

CVSS: 7.8
EPSS: -
CISA KEV: Not listed
Published: 2024.09.18

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability-

Technical severityCVSS 7.8

Vulnerability overview

Affected product and versions

Product: Linux Linux, linux kernel
Affected versions: >= 72fa6f7820c4cf96c5f7aabc4e54bdf52d1e2ac2 < f77dc8a75859e559f3238a6d906206259227985e, >= 72fa6f7820c4cf96c5f7aabc4e54bdf52d1e2ac2 < bfc1704d909dc9911a558b1a5833d3d61a43a1f2, >= 72fa6f7820c4cf96c5f7aabc4e54bdf52d1e2ac2 < e8c276d4dc0e19ee48385f74426aebc855b49aaf, >= 6.2, >= 6.2 < 6.6.51, >= 6.7 < 6.10.10, 6.11
Fixed versions: 6.6.51, 6.10.10

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Linux Linux, linux kernel and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
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-415