High 7.5Published Dec 27, 2024

CVE-2024-53217NFSD: Prevent NULL dereference in nfsd4_process_cb_update()

Updated under an hour ago (Oct 27, 2026, 11:50 PM ET)

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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: NFSD: Prevent NULL dereference in nfsd4_process_cb_update() @ses is initialized to NULL. If __nfsd4_find_backchannel() finds no available backchannel session, setup_callback_client() will try to dereference @ses and segfault.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-476
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 dcbeaa68dbbdacbbb330a86c7fc95a28473fc209 before d9a0d1f6e15859ea7a86a327f28491e23deaaa62; from dcbeaa68dbbdacbbb330a86c7fc95a28473fc209 before cac1405e3ff6685a438e910ad719e0cf06af90ee; from dcbeaa68dbbdacbbb330a86c7fc95a28473fc209 before 752a75811f27300fe8131b0a1efc91960f6f88e7; from dcbeaa68dbbdacbbb330a86c7fc95a28473fc209 before c5d90f9302742985a5078e42ac38de42c364c44a; from dcbeaa68dbbdacbbb330a86c7fc95a28473fc209 before 0c3b0e326f838787d229314d4de83af9c53347e8; from dcbeaa68dbbdacbbb330a86c7fc95a28473fc209 before eb51733ae5fc73d95bd857d5da26f9f65b202a79; from dcbeaa68dbbdacbbb330a86c7fc95a28473fc209 before 03178cd8f67227015debb700123987fe96275cd1; from dcbeaa68dbbdacbbb330a86c7fc95a28473fc209 before 4a4ffc1aa9d618e41ad9151f40966e402e58a5a2; and 1 more ranges	CNA record
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 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 2.6.38 before 4.19.325; from 4.20 before 5.4.287; from 5.5 before 5.10.231; from 5.11 before 5.15.174; from 5.16 before 6.1.120; from 6.2 before 6.6.64; from 6.7 before 6.11.11; from 6.12 before 6.12.2	NVD

References

References

https://git.kernel.org/stable/c/d9a0d1f6e15859ea7a86a327f28491e23deaaa62	patch
https://git.kernel.org/stable/c/cac1405e3ff6685a438e910ad719e0cf06af90ee	patch
https://git.kernel.org/stable/c/752a75811f27300fe8131b0a1efc91960f6f88e7	patch
https://git.kernel.org/stable/c/c5d90f9302742985a5078e42ac38de42c364c44a	patch
https://git.kernel.org/stable/c/0c3b0e326f838787d229314d4de83af9c53347e8	patch
https://git.kernel.org/stable/c/eb51733ae5fc73d95bd857d5da26f9f65b202a79	patch
https://git.kernel.org/stable/c/03178cd8f67227015debb700123987fe96275cd1	patch
https://git.kernel.org/stable/c/4a4ffc1aa9d618e41ad9151f40966e402e58a5a2	patch
https://git.kernel.org/stable/c/1e02c641c3a43c88cecc08402000418e15578d38	patch
https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
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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.