CVE-2023-53798

UNRATEDCVSS · not yet scoredTrending — 4 sources updated this week

Also known asEUVD-2023-60108 (ENISA EUVD) · GHSA-rhrj-6hqh-9pgr (GitHub Security Advisories)Source: ENISA EUVD

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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:

ethtool: Fix uninitialized number of lanes

It is not possible to set the number of lanes when setting link modes using the legacy IOCTL ethtool interface. Since 'struct ethtool_link_ksettings' is not initialized in this path, drivers receive an uninitialized number of lanes in 'struct ethtool_link_ksettings::lanes'.

When this information is later queried from drivers, it results in the ethtool code making decisions based on uninitialized memory, leading to the following KMSAN splat [1]. In practice, this most likely only happens with the tun driver that simply returns whatever it got in the set operation.

As far as I can tell, this uninitialized memory is not leaked to user space thanks to the 'ethtool_ops->cap_link_lanes_supported' check in linkmodes_prepare_data().

Fix by initializing the structure in the IOCTL path. Did not find any more call sites that pass an uninitialized structure when calling 'ethtool_ops::set_link_ksettings()'.

[1] BUG: KMSAN: uninit-value in ethnl_update_linkmodes net/ethtool/linkmodes.c:273 [inline] BUG: KMSAN: uninit-value in ethnl_set_linkmodes+0x190b/0x19d0 net/ethtool/linkmodes.c:333 ethnl_update_linkmodes net/ethtool/linkmodes.c:273 [inline] ethnl_set_linkmodes+0x190b/0x19d0 net/ethtool/linkmodes.c:333 ethnl_default_set_doit+0x88d/0xde0 net/ethtool/netlink.c:640 genl_family_rcv_msg_doit net/netlink/genetlink.c:968 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1048 [inline] genl_rcv_msg+0x141a/0x14c0 net/netlink/genetlink.c:1065 netlink_rcv_skb+0x3f8/0x750 net/netlink/af_netlink.c:2577 genl_rcv+0x40/0x60 net/netlink/genetlink.c:1076 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0xf41/0x1270 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x127d/0x1430 net/netlink/af_netlink.c:1942 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg net/socket.c:747 [inline] ____sys_sendmsg+0xa24/0xe40 net/socket.c:2501 ___sys_sendmsg+0x2a1/0x3f0 net/socket.c:2555 __sys_sendmsg net/socket.c:2584 [inline] __do_sys_sendmsg net/socket.c:2593 [inline] __se_sys_sendmsg net/socket.c:2591 [inline] __x64_sys_sendmsg+0x36b/0x540 net/socket.c:2591 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Uninit was stored to memory at: tun_get_link_ksettings+0x37/0x60 drivers/net/tun.c:3544 __ethtool_get_link_ksettings+0x17b/0x260 net/ethtool/ioctl.c:441 ethnl_set_linkmodes+0xee/0x19d0 net/ethtool/linkmodes.c:327 ethnl_default_set_doit+0x88d/0xde0 net/ethtool/netlink.c:640 genl_family_rcv_msg_doit net/netlink/genetlink.c:968 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1048 [inline] genl_rcv_msg+0x141a/0x14c0 net/netlink/genetlink.c:1065 netlink_rcv_skb+0x3f8/0x750 net/netlink/af_netlink.c:2577 genl_rcv+0x40/0x60 net/netlink/genetlink.c:1076 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0xf41/0x1270 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x127d/0x1430 net/netlink/af_netlink.c:1942 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg net/socket.c:747 [inline] ____sys_sendmsg+0xa24/0xe40 net/socket.c:2501 ___sys_sendmsg+0x2a1/0x3f0 net/socket.c:2555 __sys_sendmsg net/socket.c:2584 [inline] __do_sys_sendmsg net/socket.c:2593 [inline] __se_sys_sendmsg net/socket.c:2591 [inline] __x64_sys_sendmsg+0x36b/0x540 net/socket.c:2591 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Uninit was stored to memory at: tun_set_link_ksettings+0x37/0x60 drivers/net/tun.c:3553 ethtool_set_link_ksettings+0x600/0x690 net/ethtool/ioctl.c:609 __dev_ethtool net/ethtool/ioctl.c:3024 [inline] dev_ethtool+0x1db9/0x2a70 net/ethtool/ioctl.c:3078 dev_ioctl+0xb07/0x1270 net/core/dev_ioctl.c:524 sock_do_ioctl+0x295/0x540 net/socket.c:1213 sock_i ---truncated---

CVSS v3
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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
10th
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 2026-10-26). 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 9, 2025

Last Modified

April 15, 2026

References (5)

Vendor Advisories for CVE-2023-53798(1)

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

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatkernel-0:4.18.0-553.el8_102024-05-22redhat
linuxKernel @ 5.15.112 (fixes >=5.12.0)—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

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.27-1
  • every version up to 6.1.37-1: fixed in 6.1.37-1
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Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.3.7-1: fixed in 6.3.7-1
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Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.3.7-1: fixed in 6.3.7-1
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Data Freshness Timeline

(refreshed 9× in last 7d / 36× 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 93 of 223 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. 7 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. 2026-11-01 16:31 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  2. 2026-10-31 16:30 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  3. 2026-10-30 16:31 UTCEPSS rescoreEPSS 0.2% · 10th percentile
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  5. 2026-10-28 16:29 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  6. 2026-10-27 16:29 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  7. 2026-10-27 10:43 UTCEG score recompute
  8. 2026-10-27 10:43 UTCVendor advisory
  9. 2026-10-27 10:43 UTCGHSA enrichmentGHSA-rhrj-6hqh-9pgr
  10. 2026-10-25 17:27 UTCEG score recompute
  11. 2026-10-25 16:30 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  12. 2026-10-24 22:25 UTCOSV refresh
  13. 2026-10-24 16:29 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  14. 2026-10-23 16:29 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  15. 2026-10-22 16:31 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  16. 2026-10-21 16:29 UTCEPSS rescoreEPSS 0.2% · 9th percentile
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  19. 2026-10-18 16:29 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  20. 2026-10-18 07:40 UTCEG score recompute
  21. 2026-10-17 16:30 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  22. 2026-10-16 16:36 UTCEPSS rescoreEPSS 0.2% · 9th percentile
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  25. 2026-10-13 16:30 UTCEPSS rescoreEPSS 0.2% · 9th percentile
Show 68 more
  1. 2026-10-12 18:12 UTCEG score recompute
  2. 2026-10-11 21:37 UTCEG score recompute
  3. 2026-10-11 13:45 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  4. 2026-10-10 19:58 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  5. 2026-10-09 20:05 UTCEPSS rescoreEPSS 0.2% · 8th percentile
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  7. 2026-10-07 23:46 UTCEPSS rescoreEPSS 0.2% · 8th percentile
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  12. 2026-10-01 19:48 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  13. 2026-10-01 04:10 UTCOSV refresh
  14. 2026-09-30 16:38 UTCEG score recompute
  15. 2026-09-30 15:01 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  16. 2026-09-29 15:17 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  17. 2026-09-28 13:49 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  18. 2026-09-26 00:22 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  19. 2026-09-24 14:01 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  20. 2026-09-23 13:46 UTCEPSS rescoreEPSS 0.2% · 10th percentile
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  27. 2026-09-12 14:58 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  28. 2026-09-12 06:40 UTCOSV refresh
  29. 2026-09-11 14:51 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  30. 2026-09-11 09:34 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  31. 2026-09-08 21:58 UTCEPSS rescoreEPSS 0.2% · 9th percentile
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  37. 2026-09-02 14:10 UTCEPSS rescoreEPSS 0.2% · 9th percentile
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  40. 2026-08-30 19:15 UTCEPSS rescoreEPSS 0.2% · 9th percentile
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  46. 2026-08-24 12:00 UTCOSV refresh
  47. 2026-08-23 00:17 UTCEPSS rescoreEPSS 0.2% · 9th percentile
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  49. 2026-08-20 22:53 UTCEPSS rescoreEPSS 0.2% · 9th percentile
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  55. 2026-08-13 21:58 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  56. 2026-08-12 13:49 UTCEPSS rescoreEPSS 0.2% · 9th percentile
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  59. 2026-08-09 13:44 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  60. 2026-08-08 16:35 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  61. 2026-08-08 08:05 UTCEG score recompute
  62. 2026-08-08 08:05 UTCVendor advisory
  63. 2026-08-08 08:05 UTCGHSA enrichmentGHSA-rhrj-6hqh-9pgr
  64. 2026-08-07 16:25 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  65. 2026-08-06 13:45 UTCEPSS rescoreEPSS 0.2% · 9th percentile
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  67. 2026-08-04 10:36 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  68. 2026-08-03 10:34 UTCEPSS rescoreEPSS 0.2% · 7th percentile

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Frequently asked(4)

What is CVE-2023-53798?
CVE-2023-53798 is a vulnerability whose severity is not yet rated; its CVE record was published on December 9, 2025. In the Linux kernel, the following vulnerability has been resolved: ethtool: Fix uninitialized number of lanes It is not possible to set the number of lanes when setting link modes using the legacy IOCTL ethtool interface. Since 'struct ethtool_link_ksettings' is not initialized in this path,…
When was the CVE record for CVE-2023-53798 published?
The CVE record for CVE-2023-53798 was published on December 9, 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 April 15, 2026; the record at its source may have been updated since.
Is CVE-2023-53798 actively exploited?
CVE-2023-53798 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (10th percentile of EPSS-scored CVEs).
How do I remediate CVE-2023-53798?
A fix for CVE-2023-53798 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2023-53798 are linked in the Vendor Advisories panel on this page.

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