CVE-2025-38181

MEDIUMNVD 5.55.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 5.5 from GitHub Security Advisory published 2025-07-04. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3

Also known asEUVD-2025-20075 (ENISA EUVD) · GHSA-5hp5-2vg6-w8h9 (GitHub Security Advisories)Source: ENISA EUVD

5.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 5.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

calipso: Fix null-ptr-deref in calipso_req_{set,del}attr().

syzkaller reported a null-ptr-deref in sock_omalloc() while allocating a CALIPSO option. [0]

The NULL is of struct sock, which was fetched by sk_to_full_sk() in calipso_req_setattr().

Since commit a1a5344ddbe8 ("tcp: avoid two atomic ops for syncookies"), reqsk->rsk_listener could be NULL when SYN Cookie is returned to its client, as hinted by the leading SYN Cookie log.

Here are 3 options to fix the bug:

1) Return 0 in calipso_req_setattr() 2) Return an error in calipso_req_setattr() 3) Alaways set rsk_listener

1) is no go as it bypasses LSM, but 2) effectively disables SYN Cookie for CALIPSO. 3) is also no go as there have been many efforts to reduce atomic ops and make TCP robust against DDoS. See also commit 3b24d854cb35 ("tcp/dccp: do not touch listener sk_refcnt under synflood").

As of the blamed commit, SYN Cookie already did not need refcounting, and no one has stumbled on the bug for 9 years, so no CALIPSO user will care about SYN Cookie.

Let's return an error in calipso_req_setattr() and calipso_req_delattr() in the SYN Cookie case.

This can be reproduced by [1] on Fedora and now connect() of nc times out.

[0]: TCP: request_sock_TCPv6: Possible SYN flooding on port [::]:20002. Sending cookies. Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] CPU: 3 UID: 0 PID: 12262 Comm: syz.1.2611 Not tainted 6.14.0 #2 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 RIP: 0010:read_pnet include/net/net_namespace.h:406 [inline] RIP: 0010:sock_net include/net/sock.h:655 [inline] RIP: 0010:sock_kmalloc+0x35/0x170 net/core/sock.c:2806 Code: 89 d5 41 54 55 89 f5 53 48 89 fb e8 25 e3 c6 fd e8 f0 91 e3 00 48 8d 7b 30 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 26 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b RSP: 0018:ffff88811af89038 EFLAGS: 00010216 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff888105266400 RDX: 0000000000000006 RSI: ffff88800c890000 RDI: 0000000000000030 RBP: 0000000000000050 R08: 0000000000000000 R09: ffff88810526640e R10: ffffed1020a4cc81 R11: ffff88810526640f R12: 0000000000000000 R13: 0000000000000820 R14: ffff888105266400 R15: 0000000000000050 FS: 00007f0653a07640(0000) GS:ffff88811af80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f863ba096f4 CR3: 00000000163c0005 CR4: 0000000000770ef0 PKRU: 80000000 Call Trace: ipv6_renew_options+0x279/0x950 net/ipv6/exthdrs.c:1288 calipso_req_setattr+0x181/0x340 net/ipv6/calipso.c:1204 calipso_req_setattr+0x56/0x80 net/netlabel/netlabel_calipso.c:597 netlbl_req_setattr+0x18a/0x440 net/netlabel/netlabel_kapi.c:1249 selinux_netlbl_inet_conn_request+0x1fb/0x320 security/selinux/netlabel.c:342 selinux_inet_conn_request+0x1eb/0x2c0 security/selinux/hooks.c:5551 security_inet_conn_request+0x50/0xa0 security/security.c:4945 tcp_v6_route_req+0x22c/0x550 net/ipv6/tcp_ipv6.c:825 tcp_conn_request+0xec8/0x2b70 net/ipv4/tcp_input.c:7275 tcp_v6_conn_request+0x1e3/0x440 net/ipv6/tcp_ipv6.c:1328 tcp_rcv_state_process+0xafa/0x52b0 net/ipv4/tcp_input.c:6781 tcp_v6_do_rcv+0x8a6/0x1a40 net/ipv6/tcp_ipv6.c:1667 tcp_v6_rcv+0x505e/0x5b50 net/ipv6/tcp_ipv6.c:1904 ip6_protocol_deliver_rcu+0x17c/0x1da0 net/ipv6/ip6_input.c:436 ip6_input_finish+0x103/0x180 net/ipv6/ip6_input.c:480 NF_HOOK include/linux/netfilter.h:314 [inline] NF_HOOK include/linux/netfilter.h:308 [inline] ip6_input+0x13c/0x6b0 net/ipv6/ip6_input.c:491 dst_input include/net/dst.h:469 [inline] ip6_rcv_finish net/ipv6/ip6_input.c:79 [inline] ip6_rcv_finish+0xb6/0x490 net/ipv6/ip6_input.c:69 NF_HOOK include/linux/netfilter.h:314 [inline] NF_HOOK include/linux/netf ---truncated---

CVSS v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
40
EG Risk 40/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity55% × 45%
Impact severity (EG Severity): CVSS 5.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.6% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.6%
EPSS %ILE
46th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (5.5): severity, escalated by confirmed exploitation. This CVE's 5.5 is its impact severity (EG Severity), not escalated.

EG Severity
5.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.6% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-24). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 4, 2025

Last Modified

October 15, 2026

Advisory Details (10)

Auto-updated Aug 2, 2026
Patch available.
Web pageMentions a patch (unverified)

[SECURITY] [DLA 4328-1] linux-6.1 security update

https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
Web pageMentions a patch (unverified)

[SECURITY] [DLA 4327-1] linux security update

https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
Web page

calipso: Fix null-ptr-deref in calipso_req_{set,del}attr(). - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f4ae0f61dd9a63329ecb49b1e6356139d43240b8
Web page

calipso: Fix null-ptr-deref in calipso_req_{set,del}attr(). - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/dc724bd34d56f5589f7587a091a8cda2386826c4
Web page

calipso: Fix null-ptr-deref in calipso_req_{set,del}attr(). - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d092c7fd8e220b23d6c47e03d7d0cc79e731f379
Web page

calipso: Fix null-ptr-deref in calipso_req_{set,del}attr(). - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bde8833eb075ba8e8674de88e32de6b669966451
Web page

calipso: Fix null-ptr-deref in calipso_req_{set,del}attr(). - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/988edde4d52d5c02ea4dd95d7619372a5e2fb7b7
Web page

calipso: Fix null-ptr-deref in calipso_req_{set,del}attr(). - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/956f1499412ed0953f6a116df7fdb855e9f1fc66
Web page

calipso: Fix null-ptr-deref in calipso_req_{set,del}attr(). - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/10876da918fa1aec0227fb4c67647513447f53a9
Web page

calipso: Fix null-ptr-deref in calipso_req_{set,del}attr(). - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/058dd4a370f23a5553a9449f2db53d5bfa88d45e

Vendor Advisories for CVE-2025-38181(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(31)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1056 (5.15.0-1056.60) @ jammy2026-10-15ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.14.0-34.34) @ plucky2026-10-15ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.14.0-34.34~24.04.1) @ noble2026-10-15ubuntu
ubuntulinux-virtual-6.8 (6.8.0-100.100) @ noble2026-10-15ubuntu
ubuntulinux-tools-realtime-hwe-22.04 (6.8.1-1041.42~22.04.1) @ jammy2026-10-15ubuntu
ubuntulinux-tools-gcp-edge (6.8.0-1047.50~22.04.2) @ jammy2026-10-15ubuntu
ubuntulinux-tools-realtime-6.8.1 (6.8.1-1041.42) @ noble2026-10-15ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-100.100+fips1) @ noble2026-10-15ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1043.44~22.04.1) @ jammy2026-10-15ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1047.50+fips1) @ noble2026-10-15ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-100.100~22.04.1) @ jammy2026-10-15ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (6.8.0-100.100.1) @ noble2026-10-15ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1046.49.1) @ noble2026-10-15ubuntu
ubuntulinux-tools-ibm-lts-24.04 (6.8.0-1044.44) @ noble2026-10-15ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1023.24) @ noble2026-10-15ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1046.52) @ noble2026-10-15ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1046.52+fips1) @ noble2026-10-15ubuntu
ubuntulinux-tools-azure-edge (6.8.0-1051.57~22.04.1) @ jammy2026-10-15ubuntu
ubuntulinux-tools-gcp-fips-5.15 (5.15.0.1092.82) @ jammy2026-10-15ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1096.81) @ jammy2026-10-15ubuntu
ubuntulinux-tools-realtime-5.15 (5.15.0.1092.96) @ jammy2026-10-15ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1090.96~20.04.1) @ focal2026-10-15ubuntu
ubuntulinux-tools-azure-lts-22.04 (5.15.0.1096.94) @ jammy2026-10-15ubuntu
ubuntulinux-tools-azure-edge (5.15.0.1096.105~20.04.1) @ focal2026-10-15ubuntu
ubuntulinux-tools-kvm-5.15 (5.15.0.1088.84) @ jammy2026-10-15ubuntu
ubuntulinux-tools-nvidia-tegra-igx-rt-5.15 (5.15.0.1034.36) @ jammy2026-10-15ubuntu
ubuntulinux-tools-azure-6.14 (6.14.0-1014.14) @ plucky2026-10-15ubuntu
ubuntulinux-tools-aws-edge (6.14.0-1015.15~24.04.1) @ noble2026-10-15ubuntu
ubuntulinux-tools-realtime-hwe-24.04-edge (6.14.0-1014.14~24.04.1) @ noble2026-10-15ubuntu
ubuntulinux-tools-gcp-edge (6.14.0-1018.19~24.04.1) @ noble2026-10-15ubuntu
linuxKernel @ 5.4.295 (fixes >=4.8.0)—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFix by version rangeDependents
linux5.10.103-1 ... 5.10.92-2 (46 versions)
  • every version up to 5.10.244-1: fixed in 5.10.244-1
—
linux-6.16.1.106-3~deb11u1 ... 6.1.148-1~deb11u1 (11 versions)
  • every version up to 6.1.153-1~deb11u1: fixed in 6.1.153-1~deb11u1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 6.1.99-1 (41 versions)
  • every version up to 6.1.147-1: fixed in 6.1.147-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.12.35-1: fixed in 6.12.35-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.12.35-1: fixed in 6.12.35-1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(24)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 8× in last 7d / 40× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 98 of 197 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 2 repeat rows among the latest 100 are merged into the row they repeat. The 99 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:42 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  2. 2026-11-01 16:32 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  3. 2026-10-31 16:31 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  4. 2026-10-30 16:32 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  5. 2026-10-29 16:31 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  6. 2026-10-28 16:30 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  7. 2026-10-27 19:25 UTCOSV refresh
  8. 2026-10-27 16:30 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  9. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  10. 2026-10-25 16:31 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  11. 2026-10-25 16:30 UTCEG score recompute
  12. 2026-10-24 16:31 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  13. 2026-10-23 16:30 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  14. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  15. 2026-10-21 16:31 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  16. 2026-10-20 16:31 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  17. 2026-10-19 16:30 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  18. 2026-10-18 16:30 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  19. 2026-10-18 05:36 UTCEG score recompute
  20. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  21. 2026-10-16 16:38 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  22. 2026-10-15 23:09 UTCEG score recompute
  23. 2026-10-15 23:09 UTCVendor advisory
  24. 2026-10-15 23:08 UTCGHSA enrichmentGHSA-5hp5-2vg6-w8h9 · GitHub CVSS 5.5
  25. 2026-10-15 16:30 UTCEPSS rescoreEPSS 0.6% · 45th percentile
Show 73 more
  1. 2026-10-14 16:31 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  2. 2026-10-13 16:32 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  3. 2026-10-12 17:08 UTCEG score recompute
  4. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  5. 2026-10-11 20:40 UTCEG score recompute
  6. 2026-10-11 18:51 UTCEG score recompute
  7. 2026-10-11 15:28 UTCEG score recompute
  8. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  9. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  10. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  11. 2026-10-08 17:09 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  12. 2026-10-07 23:46 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  13. 2026-10-06 15:16 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  14. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  15. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  16. 2026-10-03 14:24 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  17. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  18. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  19. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  20. 2026-09-27 02:45 UTCOSV refresh
  21. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  22. 2026-09-26 00:24 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  23. 2026-09-24 14:02 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  24. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  25. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  26. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  27. 2026-09-17 19:29 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  28. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  29. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  30. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  31. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  32. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  33. 2026-09-11 09:35 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  34. 2026-09-10 09:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  35. 2026-09-08 21:59 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  36. 2026-09-07 16:00 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  37. 2026-09-07 11:48 UTCOSV refresh
  38. 2026-09-06 13:46 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  39. 2026-09-04 05:05 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  40. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  41. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  42. 2026-09-01 04:38 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  43. 2026-08-30 19:16 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  44. 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  45. 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  46. 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  47. 2026-08-26 14:45 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  48. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  49. 2026-08-23 00:18 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  50. 2026-08-21 23:48 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  51. 2026-08-20 22:54 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  52. 2026-08-20 21:01 UTCOSV refresh
  53. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  54. 2026-08-18 13:47 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  55. 2026-08-17 13:46 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  56. 2026-08-16 14:55 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  57. 2026-08-16 02:13 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  58. 2026-08-15 01:29 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  59. 2026-08-13 21:59 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  60. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  61. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  62. 2026-08-08 16:36 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  63. 2026-08-07 16:26 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  64. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  65. 2026-08-05 13:06 UTCEG score recompute
  66. 2026-08-05 13:06 UTCVendor advisory
  67. 2026-08-05 13:06 UTCGHSA enrichmentGHSA-5hp5-2vg6-w8h9 · GitHub CVSS 5.5
  68. 2026-08-04 15:09 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  69. 2026-08-04 10:37 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  70. 2026-08-03 10:35 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  71. 2026-08-02 02:26 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  72. 2026-08-01 04:15 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  73. 2026-07-30 16:27 UTCEPSS rescoreEPSS 0.5% · 37th percentile

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Frequently asked(5)

What is CVE-2025-38181?
CVE-2025-38181 is a medium-severity vulnerability; its CVE record was published on July 4, 2025. In the Linux kernel, the following vulnerability has been resolved: calipso: Fix null-ptr-deref in calipso_req_{set,del}attr(). syzkaller reported a null-ptr-deref in sock_omalloc() while allocating a CALIPSO option. [0] The NULL is of struct sock, which was fetched by sk_to_full_sk() in…
When was the CVE record for CVE-2025-38181 published?
The CVE record for CVE-2025-38181 was published on July 4, 2025. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 15, 2026; the record at its source may have been updated since.
Is CVE-2025-38181 actively exploited?
CVE-2025-38181 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (46th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-38181?
CVE-2025-38181 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2025-38181?
A fix for CVE-2025-38181 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2025-38181 are linked in the Vendor Advisories panel on this page.

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