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Review reviewHigh

CVE-2024-36915

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: fix nfc_llcp_setsockopt() unsafe copies syzbot reported unsafe calls to copy_from_sockptr() [1] Use copy_safe_from_sockptr() instead. [1] BUG: KASAN: slab-out-of-bounds in copy_from_sockptr_offset include/linux/sockptr.h:49 [inline] BUG: KASAN: slab-out-of-bounds in copy_from_sockptr include/linux/sockptr.h:55 [inline] BUG: KASAN: slab-out-of-bounds in nfc_llcp_setsockopt+0x6c2/0x850 net/nfc/llcp_sock.c:255 Read of size 4 at addr ffff88801caa1ec3 by task syz-executor459/5078 CPU: 0 PID: 5078 Comm: syz-executor459...

CVSS
7.1
EPSS
0.25%
16.4% percentile
CISA KEV
Not listed
Published
2024.05.31
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.25%
Technical severityCVSS 7.1

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: fix nfc_llcp_setsockopt() unsafe copies syzbot reported unsafe calls to copy_from_sockptr() [1] Use copy_safe_from_sockptr() instead. [1] BUG: KASAN: slab-out-of-bounds in copy_from_sockptr_offset include/linux/sockptr.h:49 [inline] BUG: KASAN: slab-out-of-bounds in copy_from_sockptr include/linux/sockptr.h:55 [inline] BUG: KASAN: slab-out-of-bounds in nfc_llcp_setsockopt+0x6c2/0x850 net/nfc/llcp_sock.c:255 Read of size 4 at addr ffff88801caa1ec3 by task syz-executor459/5078 CPU: 0 PID: 5078 Comm: syz-executor459...

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 < 298609e7069ce74542a2253a39ccc9717f1d877a, >= 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 < 0f106133203021533cb753e80d75896f4ad222f8, >= 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 < 29dc0ea979d433dd3c26abc8fa971550bdc05107, >= 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7 < 7a87441c9651ba37842f4809224aca13a554a26f, >= 3.10, < 6.1.119, >= 6.2 < 6.6.47, >= 6.7 < 6.8.10, 6.9
Fixed versions
6.1.119, 6.6.47, 6.8.10

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:N/A:H
CWE
CWE-125