SECUFOCUSNOW
Home›CVE index›CVE-2024-40958
Review reviewHigh

CVE-2024-40958

Linux Linux, RUGGEDCOM RST2428P, SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family

In the Linux kernel, the following vulnerability has been resolved: netns: Make get_net_ns() handle zero refcount net Syzkaller hit a warning: refcount_t: addition on 0; use-after-free. WARNING: CPU: 3 PID: 7890 at lib/refcount.c:25 refcount_warn_saturate+0xdf/0x1d0 Modules linked in: CPU: 3 PID: 7890 Comm: tun Not tainted 6.10.0-rc3-00100-gcaa4f9578aba-dirty #310 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 RIP: 0010:refcount_warn_saturate+0xdf/0x1d0 Code: 41 49 04 31 ff 89 de e8 9f 1e cd fe 84 db 75 9c e8 76 26 cd fe c6 05 b6 41 49 04 01 90 48 c7 c7 b8 8...

CVSS
7.8
EPSS
0.27%
18.8% percentile
CISA KEV
Not listed
Published
2024.07.12
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.27%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: netns: Make get_net_ns() handle zero refcount net Syzkaller hit a warning: refcount_t: addition on 0; use-after-free. WARNING: CPU: 3 PID: 7890 at lib/refcount.c:25 refcount_warn_saturate+0xdf/0x1d0 Modules linked in: CPU: 3 PID: 7890 Comm: tun Not tainted 6.10.0-rc3-00100-gcaa4f9578aba-dirty #310 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 RIP: 0010:refcount_warn_saturate+0xdf/0x1d0 Code: 41 49 04 31 ff 89 de e8 9f 1e cd fe 84 db 75 9c e8 76 26 cd fe c6 05 b6 41 49 04 01 90 48 c7 c7 b8 8...

Affected product and versions

Product
Linux Linux, RUGGEDCOM RST2428P, SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family
Affected versions
>= 0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f < 3a6cd326ead7c8bb1f64486789a01974a9f1ad55, >= 0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f < 2b82028a1f5ee3a8e04090776b10c534144ae77b, >= 0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f < cb7f811f638a14590ff98f53c6dd1fb54627d940, >= 0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f < 1b631bffcb2c09551888f3c723f4365c91fe05ef, >= 0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f < ef0394ca25953ea0eddcc82feae1f750451f1876, >= 0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f < 3af28df0d883e8c89a29ac31bc65f9023485743b, >= 0c3e0e3bb623c3735b8c9ab8aa8332f944f83a9f < ff960f9d3edbe08a736b5a224d91a305ccc946b0, >= 5.2, < V3.1, >= 5.2 < 5.4.279, >= 5.5 < 5.10.221, >= 5.11 < 5.15.162, >= 5.16 < 6.1.96, >= 6.2 < 6.6.36, >= 6.7 < 6.9.7, 6.10
Fixed versions
5.4.279, 5.10.221, 5.15.162, 6.1.96, 6.6.36, 6.9.7

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, RUGGEDCOM RST2428P, SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family 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-416