CVE-2024-50034

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 2024-10-21. 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-2024-44994 (ENISA EUVD) · GHSA-rprc-6487-2q3v (GitHub Security Advisories)Source: ENISA EUVD

5.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

net/smc: fix lacks of icsk_syn_mss with IPPROTO_SMC

Eric report a panic on IPPROTO_SMC, and give the facts that when INET_PROTOSW_ICSK was set, icsk->icsk_sync_mss must be set too.

Bug: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 Mem abort info: ESR = 0x0000000086000005 EC = 0x21: IABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x05: level 1 translation fault user pgtable: 4k pages, 48-bit VAs, pgdp=00000001195d1000 [0000000000000000] pgd=0800000109c46003, p4d=0800000109c46003, pud=0000000000000000 Internal error: Oops: 0000000086000005 [#1] PREEMPT SMP Modules linked in: CPU: 1 UID: 0 PID: 8037 Comm: syz.3.265 Not tainted 6.11.0-rc7-syzkaller-g5f5673607153 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : 0x0 lr : cipso_v4_sock_setattr+0x2a8/0x3c0 net/ipv4/cipso_ipv4.c:1910 sp : ffff80009b887a90 x29: ffff80009b887aa0 x28: ffff80008db94050 x27: 0000000000000000 x26: 1fffe0001aa6f5b3 x25: dfff800000000000 x24: ffff0000db75da00 x23: 0000000000000000 x22: ffff0000d8b78518 x21: 0000000000000000 x20: ffff0000d537ad80 x19: ffff0000d8b78000 x18: 1fffe000366d79ee x17: ffff8000800614a8 x16: ffff800080569b84 x15: 0000000000000001 x14: 000000008b336894 x13: 00000000cd96feaa x12: 0000000000000003 x11: 0000000000040000 x10: 00000000000020a3 x9 : 1fffe0001b16f0f1 x8 : 0000000000000000 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000002 x1 : 0000000000000000 x0 : ffff0000d8b78000 Call trace: 0x0 netlbl_sock_setattr+0x2e4/0x338 net/netlabel/netlabel_kapi.c:1000 smack_netlbl_add+0xa4/0x154 security/smack/smack_lsm.c:2593 smack_socket_post_create+0xa8/0x14c security/smack/smack_lsm.c:2973 security_socket_post_create+0x94/0xd4 security/security.c:4425 __sock_create+0x4c8/0x884 net/socket.c:1587 sock_create net/socket.c:1622 [inline] __sys_socket_create net/socket.c:1659 [inline] __sys_socket+0x134/0x340 net/socket.c:1706 __do_sys_socket net/socket.c:1720 [inline] __se_sys_socket net/socket.c:1718 [inline] __arm64_sys_socket+0x7c/0x94 net/socket.c:1718 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Code: ???????? ???????? ???????? ???????? (????????) ---[ end trace 0000000000000000 ]---

This patch add a toy implementation that performs a simple return to prevent such panic. This is because MSS can be set in sock_create_kern or smc_setsockopt, similar to how it's done in AF_SMC. However, for AF_SMC, there is currently no way to synchronize MSS within __sys_connect_file. This toy implementation lays the groundwork for us to support such feature for IPPROTO_SMC in the future.

CVSS v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
25
EG Risk 25/100

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.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (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.
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)

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
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-25). 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 every mission impact level.CISA BOD 26-04: 60 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 SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (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)60 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 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

October 21, 2024

Last Modified

October 24, 2024

References (2)

Patch Availability(4)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-virtual-hwe-24.04-edge (6.11.0-18.18) @ oracular2026-10-24ubuntu
ubuntulinux-tools-realtime-hwe-24.04-edge (6.11.0-1005.5) @ oracular2026-10-24ubuntu
ubuntulinux-tools-oem-24.04b (6.11.0-1015.15) @ noble2026-10-24ubuntu
linuxKernel @ 6.11.4 (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
linux—
  • every version up to 6.11.4-1: fixed in 6.11.4-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.11.4-1: fixed in 6.11.4-1
—

Weakness Classification(1)

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

All Vendor Advisories

(3)

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 / 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 94 of 206 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. 6 repeat rows among the latest 100 are merged into the row they repeat. The 112 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:41 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  2. 2026-11-01 16:31 UTCEPSS rescoreEPSS 0.2% · 10th percentile
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  9. 2026-10-25 16:59 UTCEG score recompute
  10. 2026-10-25 16:30 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  11. 2026-10-24 16:30 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  12. 2026-10-24 04:14 UTCEG score recompute
  13. 2026-10-24 04:14 UTCVendor advisory
  14. 2026-10-24 04:14 UTCGHSA enrichmentGHSA-rprc-6487-2q3v · GitHub CVSS 5.5
  15. 2026-10-22 16:31 UTCEPSS rescoreEPSS 0.2% · 9th percentile
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  19. 2026-10-18 06:55 UTCEG score recompute
  20. 2026-10-17 16:31 UTCEPSS rescoreEPSS 0.2% · 9th percentile
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  24. 2026-10-13 16:31 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  25. 2026-10-12 17:41 UTCEG score recompute
Show 69 more
  1. 2026-10-11 21:07 UTCEG score recompute
  2. 2026-10-11 15:59 UTCEG score recompute
  3. 2026-10-11 13:46 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  4. 2026-10-10 19:58 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  5. 2026-10-10 11:03 UTCOSV refresh
  6. 2026-10-09 20:05 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  7. 2026-10-08 17:08 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  8. 2026-10-07 23:46 UTCEPSS rescoreEPSS 0.2% · 9th percentile
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  10. 2026-10-05 17:41 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  11. 2026-10-04 23:20 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  12. 2026-10-03 14:24 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  13. 2026-10-02 16:14 UTCEG score recompute
  14. 2026-10-01 19:48 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  15. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.2% · 9th percentile
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  23. 2026-09-20 20:56 UTCOSV refresh
  24. 2026-09-20 20:14 UTCEPSS rescoreEPSS 0.2% · 10th percentile
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  42. 2026-09-01 20:27 UTCOSV refresh
  43. 2026-09-01 13:52 UTCEPSS rescoreEPSS 0.2% · 10th percentile
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  59. 2026-08-15 22:07 UTCOSV refresh
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Frequently asked(5)

What is CVE-2024-50034?
CVE-2024-50034 is a medium-severity vulnerability; its CVE record was published on October 21, 2024. In the Linux kernel, the following vulnerability has been resolved: net/smc: fix lacks of icsk_syn_mss with IPPROTO_SMC Eric report a panic on IPPROTO_SMC, and give the facts that when INET_PROTOSW_ICSK was set, icsk->icsk_sync_mss must be set too. Bug: Unable to handle kernel NULL pointer…
When was the CVE record for CVE-2024-50034 published?
The CVE record for CVE-2024-50034 was published on October 21, 2024. 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 24, 2024; the record at its source may have been updated since.
Is CVE-2024-50034 actively exploited?
CVE-2024-50034 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).
What is the CVSS score of CVE-2024-50034?
CVE-2024-50034 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2024-50034?
A fix for CVE-2024-50034 is available: update to the fixed version the vendor names in its advisory.

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