CVE-2024-35870

MEDIUMNVD 4.44.4
EchelonGraph scoreMEDIUM confidence

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

Score 4.4 from GitHub Security Advisory published 2024-05-19. NVD baseline CVSS 4.4; sources differ by 0.0.

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

Also known asEUVD-2024-35588 (ENISA EUVD) · GHSA-h2wx-vrp7-wvmw (GitHub Security Advisories)Source: ENISA EUVD

4.4EG
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: 0.6%CVSS: 4.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

smb: client: fix UAF in smb2_reconnect_server()

The UAF bug is due to smb2_reconnect_server() accessing a session that is already being teared down by another thread that is executing __cifs_put_smb_ses(). This can happen when (a) the client has connection to the server but no session or (b) another thread ends up setting @ses->ses_status again to something different than SES_EXITING.

To fix this, we need to make sure to unconditionally set @ses->ses_status to SES_EXITING and prevent any other threads from setting a new status while we're still tearing it down.

The following can be reproduced by adding some delay to right after the ipc is freed in __cifs_put_smb_ses() - which will give smb2_reconnect_server() worker a chance to run and then accessing @ses->ipc:

kinit ... mount.cifs //srv/share /mnt/1 -o sec=krb5,nohandlecache,echo_interval=10 [disconnect srv] ls /mnt/1 &>/dev/null sleep 30 kdestroy [reconnect srv] sleep 10 umount /mnt/1 ... CIFS: VFS: Verify user has a krb5 ticket and keyutils is installed CIFS: VFS: \\srv Send error in SessSetup = -126 CIFS: VFS: Verify user has a krb5 ticket and keyutils is installed CIFS: VFS: \\srv Send error in SessSetup = -126 general protection fault, probably for non-canonical address 0x6b6b6b6b6b6b6b6b: 0000 [#1] PREEMPT SMP NOPTI CPU: 3 PID: 50 Comm: kworker/3:1 Not tainted 6.9.0-rc2 #1 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-1.fc39 04/01/2014 Workqueue: cifsiod smb2_reconnect_server [cifs] RIP: 0010:__list_del_entry_valid_or_report+0x33/0xf0 Code: 4f 08 48 85 d2 74 42 48 85 c9 74 59 48 b8 00 01 00 00 00 00 ad de 48 39 c2 74 61 48 b8 22 01 00 00 00 00 74 69 <48> 8b 01 48 39 f8 75 7b 48 8b 72 08 48 39 c6 0f 85 88 00 00 00 b8 RSP: 0018:ffffc900001bfd70 EFLAGS: 00010a83 RAX: dead000000000122 RBX: ffff88810da53838 RCX: 6b6b6b6b6b6b6b6b RDX: 6b6b6b6b6b6b6b6b RSI: ffffffffc02f6878 RDI: ffff88810da53800 RBP: ffff88810da53800 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88810c064000 R13: 0000000000000001 R14: ffff88810c064000 R15: ffff8881039cc000 FS: 0000000000000000(0000) GS:ffff888157c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe3728b1000 CR3: 000000010caa4000 CR4: 0000000000750ef0 PKRU: 55555554 Call Trace: ? die_addr+0x36/0x90 ? exc_general_protection+0x1c1/0x3f0 ? asm_exc_general_protection+0x26/0x30 ? __list_del_entry_valid_or_report+0x33/0xf0 __cifs_put_smb_ses+0x1ae/0x500 [cifs] smb2_reconnect_server+0x4ed/0x710 [cifs] process_one_work+0x205/0x6b0 worker_thread+0x191/0x360 ? __pfx_worker_thread+0x10/0x10 kthread+0xe2/0x110 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x34/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1a/0x30

CVSS v3
4.4
EG Score
4.4MEDIUMmedium confidence
EG Risk
20
EG Risk 20/100

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)
Severity44% × 45%
Impact severity (EG Severity): CVSS 4.4 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.
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
0.6%
EPSS %ILE
49th
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 (4.4): severity, escalated by confirmed exploitation. This CVE's 4.4 is its impact severity (EG Severity), not escalated.

EG Severity
4.4 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 2026-10-25). 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

May 19, 2024

Last Modified

August 5, 2026

References (4)

Vendor Advisories for CVE-2024-35870(4)

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

Patch Availability(8)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-virtual-hwe-24.04-edge (6.8.0-38.38) @ noble2026-10-24ubuntu
ubuntulinux-tools-nvidia-64k (6.8.0-1009.9) @ noble2026-10-24ubuntu
ubuntulinux-tools-aws (6.8.0-1011.12) @ noble2026-10-24ubuntu
ubuntulinux-tools-oracle-64k (6.8.0-1008.8) @ noble2026-10-24ubuntu
redhatkernel-0:5.14.0-427.24.1.el9_42024-07-08redhat
redhatkernel-0:5.14.0-284.71.1.el9_22024-06-26redhat
redhatkernel-rt-0:5.14.0-284.71.1.rt14.356.el9_22024-06-26redhat
linuxKernel @ 6.1.121 (fixes >=4.16.0)—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 ... 7.2~rc5-1~exp1 (498 versions)
  • every version on: no fix on record
—
linux-6.16.1.106-3~deb11u1, 6.1.106-3~deb11u2, 6.1.106-3~deb11u3, 6.1.112-1~deb11u1, 6.1.119-1~deb11u1
  • every version up to 6.1.128-1~deb11u1: fixed in 6.1.128-1~deb11u1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 6.1.99-1 (32 versions)
  • every version up to 6.1.123-1: fixed in 6.1.123-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.8.9-1: fixed in 6.8.9-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.8.9-1: fixed in 6.8.9-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(4)

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 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 96 of 222 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. 4 repeat rows among the latest 100 are merged into the row they repeat. The 126 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 0.6% · 49th percentile
  2. 2026-11-01 16:31 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  3. 2026-10-31 16:30 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  4. 2026-10-30 16:32 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  5. 2026-10-29 16:30 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  6. 2026-10-28 16:29 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  7. 2026-10-27 16:29 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  8. 2026-10-26 16:29 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  9. 2026-10-25 17:09 UTCEG score recompute
  10. 2026-10-25 16:30 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  11. 2026-10-24 16:30 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  12. 2026-10-24 07:02 UTCEG score recompute
  13. 2026-10-24 07:02 UTCVendor advisory
  14. 2026-10-24 07:02 UTCGHSA enrichmentGHSA-h2wx-vrp7-wvmw · GitHub CVSS 4.4
  15. 2026-10-23 16:29 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  16. 2026-10-22 16:31 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  17. 2026-10-21 16:29 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  18. 2026-10-20 16:30 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  19. 2026-10-19 19:55 UTCOSV refresh
  20. 2026-10-19 16:29 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  21. 2026-10-18 16:30 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  22. 2026-10-18 07:13 UTCEG score recompute
  23. 2026-10-17 16:31 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  24. 2026-10-16 16:36 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  25. 2026-10-15 16:30 UTCEPSS rescoreEPSS 0.6% · 48th percentile
Show 71 more
  1. 2026-10-14 16:30 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  2. 2026-10-13 16:30 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  3. 2026-10-12 17:52 UTCEG score recompute
  4. 2026-10-12 16:31 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  5. 2026-10-11 21:17 UTCEG score recompute
  6. 2026-10-11 16:10 UTCEG score recompute
  7. 2026-10-11 13:46 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  8. 2026-10-10 19:58 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  9. 2026-10-09 20:05 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  10. 2026-10-08 17:07 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  11. 2026-10-07 23:46 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  12. 2026-10-06 15:15 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  13. 2026-10-05 17:41 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  14. 2026-10-04 23:20 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  15. 2026-10-03 14:24 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  16. 2026-10-01 19:48 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  17. 2026-09-30 19:46 UTCEG score recompute
  18. 2026-09-30 15:01 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  19. 2026-09-29 15:17 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  20. 2026-09-28 13:49 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  21. 2026-09-27 13:44 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  22. 2026-09-27 00:42 UTCOSV refresh
  23. 2026-09-26 15:57 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  24. 2026-09-26 00:23 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  25. 2026-09-24 14:01 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  26. 2026-09-23 13:46 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  27. 2026-09-22 14:46 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  28. 2026-09-21 20:32 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  29. 2026-09-20 20:14 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  30. 2026-09-19 15:40 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  31. 2026-09-18 19:26 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  32. 2026-09-16 14:06 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  33. 2026-09-15 03:08 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  34. 2026-09-13 16:45 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  35. 2026-09-12 14:59 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  36. 2026-09-11 14:51 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  37. 2026-09-11 09:35 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  38. 2026-09-08 21:58 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  39. 2026-09-07 15:59 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  40. 2026-09-07 10:18 UTCOSV refresh
  41. 2026-09-06 13:46 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  42. 2026-09-05 15:26 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  43. 2026-09-04 13:59 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  44. 2026-09-04 05:05 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  45. 2026-09-02 14:10 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  46. 2026-09-01 13:52 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  47. 2026-09-01 04:37 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  48. 2026-08-30 19:15 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  49. 2026-08-30 01:20 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  50. 2026-08-28 21:39 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  51. 2026-08-27 14:23 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  52. 2026-08-26 14:44 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  53. 2026-08-25 13:47 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  54. 2026-08-24 14:15 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  55. 2026-08-23 00:18 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  56. 2026-08-21 23:47 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  57. 2026-08-20 22:53 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  58. 2026-08-20 19:31 UTCOSV refresh
  59. 2026-08-19 17:02 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  60. 2026-08-18 13:46 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  61. 2026-08-17 13:45 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  62. 2026-08-16 14:54 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  63. 2026-08-16 02:13 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  64. 2026-08-15 01:28 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  65. 2026-08-13 21:59 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  66. 2026-08-12 13:49 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  67. 2026-08-11 13:40 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  68. 2026-08-10 23:58 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  69. 2026-08-09 13:45 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  70. 2026-08-08 16:35 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  71. 2026-08-07 16:25 UTCEPSS rescoreEPSS 0.6% · 46th percentile

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2024-35870?
CVE-2024-35870 is a medium-severity vulnerability; its CVE record was published on May 19, 2024. In the Linux kernel, the following vulnerability has been resolved: smb: client: fix UAF in smb2_reconnect_server() The UAF bug is due to smb2_reconnect_server() accessing a session that is already being teared down by another thread that is executing __cifs_put_smb_ses(). This can happen when (a)…
When was the CVE record for CVE-2024-35870 published?
The CVE record for CVE-2024-35870 was published on May 19, 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 August 5, 2026; the record at its source may have been updated since.
Is CVE-2024-35870 actively exploited?
CVE-2024-35870 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (49th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2024-35870?
CVE-2024-35870 has a CVSS v3 base score of 4.4 (NVD).
How do I remediate CVE-2024-35870?
A fix for CVE-2024-35870 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2024-35870 are linked in the Vendor Advisories panel on this page.

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