Medium 4.4Published Jul 30, 2024

CVE-2024-42154tcp_metrics: validate source addr length

Updated under an hour ago (Oct 27, 2026, 5:00 AM ET)

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It affects Linux and 8 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: tcp_metrics: validate source addr length I don't see anything checking that TCP_METRICS_ATTR_SADDR_IPV4 is at least 4 bytes long, and the policy doesn't have an entry for this attribute at all (neither does it for IPv6 but v6 is manually validated).

CVSS: 4.4 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 3e7013ddf55af7bc191792b8aea0c2b94fb0fef5 before 19d997b59fa1fd7a02e770ee0881c0652b9c32c9; 3e7013ddf55af7bc191792b8aea0c2b94fb0fef5 builds before 2a2e79dbe2236a1289412d2044994f7ab419b44c; from 3e7013ddf55af7bc191792b8aea0c2b94fb0fef5 before cdffc358717e436bb67122bb82c1a2a26e050f98; from 3e7013ddf55af7bc191792b8aea0c2b94fb0fef5 before ef7c428b425beeb52b894e16f1c4b629d6cebfb6; from 3e7013ddf55af7bc191792b8aea0c2b94fb0fef5 before 31f03bb04146c1c6df6c03e9f45401f5f5a985d3; from 3e7013ddf55af7bc191792b8aea0c2b94fb0fef5 before 8c2debdd170e395934ac0e039748576dfde14e99; 3e7013ddf55af7bc191792b8aea0c2b94fb0fef5 builds before 3d550dd5418729a6e77fe7721d27adea7152e321; from 3e7013ddf55af7bc191792b8aea0c2b94fb0fef5 before 66be40e622e177316ae81717aa30057ba9e61dff	CNA record
Siemens RUGGEDCOM RST2428P siemens:ruggedcom_rst2428p (from the name)	before V3.1	CISA ADP
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family siemens:scalance_xc_300_xr_300_xc_400_xr_500wg_xr_500_family (from the name)	all versions not affected	CISA ADP
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family siemens:scalance_xcm_xrm_xch_xrh_300_family (from the name)	before V3.1	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
Siemens SIMATIC S7-1500 TM MFP - BIOS siemens:simatic_s7_1500_tm_mfp_bios (from the name)	all versions	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
linux linux_kernel linux:linux_kernel	from 3.14 before 4.19.318; from 4.20 before 5.4.280; from 5.5 before 5.10.222; from 5.11 before 5.15.163; from 5.16 before 6.1.98; from 6.2 before 6.6.39; from 6.7 before 6.9.9; 6.10; and 5 more ranges	NVD

References

References

https://git.kernel.org/stable/c/19d997b59fa1fd7a02e770ee0881c0652b9c32c9	mailing-list, patch
https://git.kernel.org/stable/c/2a2e79dbe2236a1289412d2044994f7ab419b44c	mailing-list, patch
https://git.kernel.org/stable/c/cdffc358717e436bb67122bb82c1a2a26e050f98	mailing-list, patch
https://git.kernel.org/stable/c/ef7c428b425beeb52b894e16f1c4b629d6cebfb6	mailing-list, patch
https://git.kernel.org/stable/c/31f03bb04146c1c6df6c03e9f45401f5f5a985d3	mailing-list, patch
https://git.kernel.org/stable/c/8c2debdd170e395934ac0e039748576dfde14e99	mailing-list, patch
https://git.kernel.org/stable/c/3d550dd5418729a6e77fe7721d27adea7152e321	mailing-list, patch
https://git.kernel.org/stable/c/66be40e622e177316ae81717aa30057ba9e61dff	mailing-list, patch
http://www.openwall.com/lists/oss-security/2024/09/24/3
http://www.openwall.com/lists/oss-security/2024/09/24/4
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.