CVE-2025-40357

UNRATEDCVSS · not yet scored

Also known asEUVD-2025-203630 (ENISA EUVD) · GHSA-fj46-x93r-g8xj (GitHub Security Advisories)Source: ENISA EUVD

—
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No CVSS published and no exploitation signals yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS v2: —Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

net/smc: fix general protection fault in __smc_diag_dump

The syzbot report a crash:

Oops: general protection fault, probably for non-canonical address 0xfbd5a5d5a0000003: 0000 [#1] SMP KASAN NOPTI KASAN: maybe wild-memory-access in range [0xdead4ead00000018-0xdead4ead0000001f] CPU: 1 UID: 0 PID: 6949 Comm: syz.0.335 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:smc_diag_msg_common_fill net/smc/smc_diag.c:44 [inline] RIP: 0010:__smc_diag_dump.constprop.0+0x3ca/0x2550 net/smc/smc_diag.c:89 Call Trace: smc_diag_dump_proto+0x26d/0x420 net/smc/smc_diag.c:217 smc_diag_dump+0x27/0x90 net/smc/smc_diag.c:234 netlink_dump+0x539/0xd30 net/netlink/af_netlink.c:2327 __netlink_dump_start+0x6d6/0x990 net/netlink/af_netlink.c:2442 netlink_dump_start include/linux/netlink.h:341 [inline] smc_diag_handler_dump+0x1f9/0x240 net/smc/smc_diag.c:251 __sock_diag_cmd net/core/sock_diag.c:249 [inline] sock_diag_rcv_msg+0x438/0x790 net/core/sock_diag.c:285 netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2552 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x5a7/0x870 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x8d1/0xdd0 net/netlink/af_netlink.c:1896 sock_sendmsg_nosec net/socket.c:714 [inline] __sock_sendmsg net/socket.c:729 [inline] ____sys_sendmsg+0xa95/0xc70 net/socket.c:2614 ___sys_sendmsg+0x134/0x1d0 net/socket.c:2668 __sys_sendmsg+0x16d/0x220 net/socket.c:2700 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4e0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The process like this:

(CPU1) | (CPU2) ---------------------------------|------------------------------- inet_create() | // init clcsock to NULL | sk = sk_alloc() | | // unexpectedly change clcsock | inet_init_csk_locks() | | // add sk to hash table | smc_inet_init_sock() | smc_sk_init() | smc_hash_sk() | | // traverse the hash table | smc_diag_dump_proto | __smc_diag_dump() | // visit wrong clcsock | smc_diag_msg_common_fill() // alloc clcsock | smc_create_clcsk | sock_create_kern |

With CONFIG_DEBUG_LOCK_ALLOC=y, the smc->clcsock is unexpectedly changed in inet_init_csk_locks(). The INET_PROTOSW_ICSK flag is no need by smc, just remove it.

After removing the INET_PROTOSW_ICSK flag, this patch alse revert commit 6fd27ea183c2 ("net/smc: fix lacks of icsk_syn_mss with IPPROTO_SMC") to avoid casting smc_sock to inet_connection_sock.

CVSS v3
—
EchelonGraph score
Not yet assessedNo source has published severity data for this CVE yet — no CVSS score from NVD or a CNA, no GitHub advisory, and it is not in CISA KEV. This is not a rating of zero; we cannot assess it yet.
EG Score
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EG Risk
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EPSS PROB
0.2%
EPSS %ILE
9th
KEV
Not listed

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

EG Severity
Not assessed: no CVSS publishedA missing CVSS is not a severity of zero.
EG Likelihood
0.2% 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
No SSVC decision: EchelonGraph has not assessed this CVECISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the BOD 26-04 block below.

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

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” 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

December 16, 2025

Last Modified

October 14, 2026

References (3)

Patch Availability(6)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-virtual-hwe-24.04-edge (6.17.0-14.14) @ questing2026-05-21ubuntu
ubuntulinux-tools-oem-6.17 (6.17.0-1011.11) @ noble2026-05-21ubuntu
ubuntulinux-tools-oracle-64k-6.17 (6.17.0-1007.7) @ questing2026-05-21ubuntu
ubuntulinux-tools-gcp-64k-6.17 (6.17.0-1007.7) @ questing2026-05-21ubuntu
ubuntulinux-tools-azure-6.17 (6.17.0-1008.8) @ questing2026-05-21ubuntu
linuxKernel @ 6.12.56 (fixes >=6.11.0)—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

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.38-1 ... 6.12.57-1~bpo12+1 (6 versions)
  • every version up to 6.12.57-1: fixed in 6.12.57-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.17.5-1~exp1 (75 versions)
  • every version up to 6.17.6-1: fixed in 6.17.6-1
—

All Vendor Advisories

(5)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 7× in last 7d / 39× 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 228 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 130 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-06 16:34 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  2. 2026-11-05 16:35 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  3. 2026-11-04 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  4. 2026-11-03 16:44 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  5. 2026-11-02 16:42 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  6. 2026-11-01 16:32 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  7. 2026-10-31 16:31 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  8. 2026-10-30 16:32 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  9. 2026-10-29 16:31 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  10. 2026-10-28 16:30 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  11. 2026-10-27 16:30 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  12. 2026-10-27 13:25 UTCOSV refresh
  13. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  14. 2026-10-25 16:31 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  15. 2026-10-25 16:27 UTCEG score recompute
  16. 2026-10-24 16:31 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  17. 2026-10-23 16:30 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  18. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  19. 2026-10-21 16:31 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  20. 2026-10-20 16:31 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  21. 2026-10-19 16:30 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  22. 2026-10-18 16:30 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  23. 2026-10-18 05:34 UTCEG score recompute
  24. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  25. 2026-10-16 16:38 UTCEPSS rescoreEPSS 0.2% · 9th percentile
Show 73 more
  1. 2026-10-15 16:30 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  2. 2026-10-14 16:31 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  3. 2026-10-14 13:47 UTCGHSA enrichmentGHSA-fj46-x93r-g8xj
  4. 2026-10-13 16:32 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  5. 2026-10-12 17:06 UTCEG score recompute
  6. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  7. 2026-10-11 20:38 UTCEG score recompute
  8. 2026-10-11 18:50 UTCEG score recompute
  9. 2026-10-11 15:26 UTCEG score recompute
  10. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  11. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  12. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  13. 2026-10-08 17:09 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  14. 2026-10-07 23:46 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  15. 2026-10-06 15:16 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  16. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  17. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  18. 2026-10-03 17:51 UTCOSV refresh
  19. 2026-10-03 14:24 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  20. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  21. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  22. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  23. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  24. 2026-09-26 00:24 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  25. 2026-09-24 14:02 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  26. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  27. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  28. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  29. 2026-09-17 19:29 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  30. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  31. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  32. 2026-09-14 08:20 UTCOSV refresh
  33. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  34. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  35. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  36. 2026-09-11 09:35 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  37. 2026-09-10 09:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  38. 2026-09-08 21:59 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  39. 2026-09-07 16:00 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  40. 2026-09-06 13:46 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  41. 2026-09-04 05:05 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  42. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  43. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  44. 2026-09-01 04:38 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  45. 2026-08-30 19:16 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  46. 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  47. 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  48. 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  49. 2026-08-26 14:45 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  50. 2026-08-26 09:43 UTCOSV refresh
  51. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  52. 2026-08-23 00:18 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  53. 2026-08-21 23:48 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  54. 2026-08-20 22:54 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  55. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  56. 2026-08-18 13:47 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  57. 2026-08-17 13:46 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  58. 2026-08-16 14:55 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  59. 2026-08-16 02:13 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  60. 2026-08-15 01:29 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  61. 2026-08-13 21:59 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  62. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  63. 2026-08-09 23:41 UTCVendor advisory
  64. 2026-08-09 23:41 UTCGHSA enrichmentGHSA-fj46-x93r-g8xj
  65. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  66. 2026-08-07 16:26 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  67. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  68. 2026-08-06 09:07 UTCEG score recompute
  69. 2026-08-06 09:07 UTCVendor advisory
  70. 2026-08-06 09:07 UTCGHSA enrichmentGHSA-fj46-x93r-g8xj
  71. 2026-08-04 15:09 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  72. 2026-08-04 10:37 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  73. 2026-08-03 10:35 UTCEPSS rescoreEPSS 0.2% · 6th percentile

Related CVEs(same vendor)

Frequently asked(4)

What is CVE-2025-40357?
CVE-2025-40357 is a vulnerability whose severity is not yet rated; its CVE record was published on December 16, 2025. In the Linux kernel, the following vulnerability has been resolved: net/smc: fix general protection fault in __smc_diag_dump The syzbot report a crash: Oops: general protection fault, probably for non-canonical address 0xfbd5a5d5a0000003: 0000 [#1] SMP KASAN NOPTI KASAN: maybe wild-memory-access in…
When was the CVE record for CVE-2025-40357 published?
The CVE record for CVE-2025-40357 was published on December 16, 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 14, 2026; the record at its source may have been updated since.
Is CVE-2025-40357 actively exploited?
CVE-2025-40357 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (9th percentile of EPSS-scored CVEs).
How do I remediate CVE-2025-40357?
A fix for CVE-2025-40357 is available: update to the fixed version the vendor names in its advisory.

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