CVE-2024-50126

HIGHNVD 7.87.8
EchelonGraph scoreMEDIUM confidence

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

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2024-11-05. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

net: sched: use RCU read-side critical section in taprio_dump()

Fix possible use-after-free in 'taprio_dump()' by adding RCU read-side critical section there. Never seen on x86 but found on a KASAN-enabled arm64 system when investigating https://syzkaller.appspot.com/bug?extid=b65e0af58423fc8a73aa:

[T15862] BUG: KASAN: slab-use-after-free in taprio_dump+0xa0c/0xbb0 [T15862] Read of size 4 at addr ffff0000d4bb88f8 by task repro/15862 [T15862] [T15862] CPU: 0 UID: 0 PID: 15862 Comm: repro Not tainted 6.11.0-rc1-00293-gdefaf1a2113a-dirty #2 [T15862] Hardware name: QEMU QEMU Virtual Machine, BIOS edk2-20240524-5.fc40 05/24/2024 [T15862] Call trace: [T15862] dump_backtrace+0x20c/0x220 [T15862] show_stack+0x2c/0x40 [T15862] dump_stack_lvl+0xf8/0x174 [T15862] print_report+0x170/0x4d8 [T15862] kasan_report+0xb8/0x1d4 [T15862] __asan_report_load4_noabort+0x20/0x2c [T15862] taprio_dump+0xa0c/0xbb0 [T15862] tc_fill_qdisc+0x540/0x1020 [T15862] qdisc_notify.isra.0+0x330/0x3a0 [T15862] tc_modify_qdisc+0x7b8/0x1838 [T15862] rtnetlink_rcv_msg+0x3c8/0xc20 [T15862] netlink_rcv_skb+0x1f8/0x3d4 [T15862] rtnetlink_rcv+0x28/0x40 [T15862] netlink_unicast+0x51c/0x790 [T15862] netlink_sendmsg+0x79c/0xc20 [T15862] __sock_sendmsg+0xe0/0x1a0 [T15862] ____sys_sendmsg+0x6c0/0x840 [T15862] ___sys_sendmsg+0x1ac/0x1f0 [T15862] __sys_sendmsg+0x110/0x1d0 [T15862] __arm64_sys_sendmsg+0x74/0xb0 [T15862] invoke_syscall+0x88/0x2e0 [T15862] el0_svc_common.constprop.0+0xe4/0x2a0 [T15862] do_el0_svc+0x44/0x60 [T15862] el0_svc+0x50/0x184 [T15862] el0t_64_sync_handler+0x120/0x12c [T15862] el0t_64_sync+0x190/0x194 [T15862] [T15862] Allocated by task 15857: [T15862] kasan_save_stack+0x3c/0x70 [T15862] kasan_save_track+0x20/0x3c [T15862] kasan_save_alloc_info+0x40/0x60 [T15862] __kasan_kmalloc+0xd4/0xe0 [T15862] __kmalloc_cache_noprof+0x194/0x334 [T15862] taprio_change+0x45c/0x2fe0 [T15862] tc_modify_qdisc+0x6a8/0x1838 [T15862] rtnetlink_rcv_msg+0x3c8/0xc20 [T15862] netlink_rcv_skb+0x1f8/0x3d4 [T15862] rtnetlink_rcv+0x28/0x40 [T15862] netlink_unicast+0x51c/0x790 [T15862] netlink_sendmsg+0x79c/0xc20 [T15862] __sock_sendmsg+0xe0/0x1a0 [T15862] ____sys_sendmsg+0x6c0/0x840 [T15862] ___sys_sendmsg+0x1ac/0x1f0 [T15862] __sys_sendmsg+0x110/0x1d0 [T15862] __arm64_sys_sendmsg+0x74/0xb0 [T15862] invoke_syscall+0x88/0x2e0 [T15862] el0_svc_common.constprop.0+0xe4/0x2a0 [T15862] do_el0_svc+0x44/0x60 [T15862] el0_svc+0x50/0x184 [T15862] el0t_64_sync_handler+0x120/0x12c [T15862] el0t_64_sync+0x190/0x194 [T15862] [T15862] Freed by task 6192: [T15862] kasan_save_stack+0x3c/0x70 [T15862] kasan_save_track+0x20/0x3c [T15862] kasan_save_free_info+0x4c/0x80 [T15862] poison_slab_object+0x110/0x160 [T15862] __kasan_slab_free+0x3c/0x74 [T15862] kfree+0x134/0x3c0 [T15862] taprio_free_sched_cb+0x18c/0x220 [T15862] rcu_core+0x920/0x1b7c [T15862] rcu_core_si+0x10/0x1c [T15862] handle_softirqs+0x2e8/0xd64 [T15862] __do_softirq+0x14/0x20

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity78% × 45%
The EG Score, 7.8 of 10.
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 low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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
12th
KEV
Not listed

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

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

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (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

November 5, 2024

Last Modified

August 5, 2026

Advisory Details (4)

Auto-updated Aug 5, 2026
Patch available.
Web page

net: sched: use RCU read-side critical section in taprio_dump() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b22db8b8befe90b61c98626ca1a2fbb0505e9fe3
Web page

net: sched: use RCU read-side critical section in taprio_dump() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e4369cb6acf6b895ac2453cc1cdf2f4326122c6d
Web page

net: sched: use RCU read-side critical section in taprio_dump() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5d282467245f267c0b9ada3f7f309ff838521536
Web page

net: sched: use RCU read-side critical section in taprio_dump() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b911fa9e92ee586e36479ad57b88f20471acaca1

Vendor Advisories for CVE-2024-50126(2)

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

Patch Availability(14)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-virtual-hwe-24.04-edge (6.11.0-18.18) @ oracular2026-05-23ubuntu
ubuntulinux-tools-realtime-hwe-24.04-edge (6.11.0-1005.5) @ oracular2026-05-23ubuntu
ubuntulinux-tools-oem-24.04b (6.11.0-1015.15) @ noble2026-05-23ubuntu
ubuntulinux-virtual (6.8.0-58.60) @ noble2026-05-23ubuntu
ubuntulinux-tools-gkeop-6.8 (6.8.0-1010.12) @ noble2026-05-23ubuntu
ubuntulinux-tools-raspi-realtime (6.8.0-2023.24) @ noble2026-05-23ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-58.60~22.04.1) @ jammy2026-05-23ubuntu
ubuntulinux-tools-gcp-edge (6.8.0-1028.30~22.04.1) @ jammy2026-05-23ubuntu
ubuntulinux-tools-realtime-hwe-24.04 (6.8.1-1020.21) @ noble2026-05-23ubuntu
ubuntulinux-tools-azure-nvidia (6.8.0-1014.15) @ noble2026-05-23ubuntu
ubuntulinux-tools-raspi (6.8.0-1028.32) @ noble2026-05-23ubuntu
ubuntulinux-tools-aws-edge (6.8.0-1027.29~22.04.1) @ jammy2026-05-23ubuntu
redhatkernel-0:5.14.0-570.12.1.el9_62025-05-13redhat
linuxKernel @ 6.1.117 (fixes >=6.1.0)—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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
linux-6.16.1.106-3~deb11u1, 6.1.106-3~deb11u2, 6.1.106-3~deb11u3, 6.1.112-1~deb11u1
  • every version up to 6.1.119-1~deb11u1: fixed in 6.1.119-1~deb11u1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 6.1.99-1 (31 versions)
  • every version up to 6.1.119-1: fixed in 6.1.119-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.11.6-1: fixed in 6.11.6-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.11.6-1: fixed in 6.11.6-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(12)

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 10× in last 7d / 32× 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 91 of 193 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. 9 repeat rows among the latest 100 are merged into the row they repeat. The 102 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:30 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  2. 2026-10-13 16:31 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  3. 2026-10-12 17:41 UTCEG score recompute
  4. 2026-10-12 16:31 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  5. 2026-10-11 21:07 UTCEG score recompute
  6. 2026-10-11 15:59 UTCEG score recompute
  7. 2026-10-11 13:46 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  8. 2026-10-10 19:58 UTCEPSS rescoreEPSS 0.2% · 12th percentile
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  15. 2026-10-03 14:24 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  16. 2026-10-02 16:15 UTCEG score recompute
  17. 2026-10-01 19:48 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  18. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.2% · 12th percentile
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  22. 2026-09-26 23:12 UTCOSV refresh
  23. 2026-09-26 15:57 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  24. 2026-09-24 14:01 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  25. 2026-09-23 13:46 UTCEPSS rescoreEPSS 0.2% · 14th percentile
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  1. 2026-09-22 14:47 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  2. 2026-09-20 20:14 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  3. 2026-09-19 15:40 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  4. 2026-09-18 19:26 UTCEPSS rescoreEPSS 0.2% · 14th percentile
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  6. 2026-09-16 14:06 UTCEPSS rescoreEPSS 0.2% · 14th percentile
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  15. 2026-09-07 16:00 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  16. 2026-09-07 08:47 UTCOSV refresh
  17. 2026-09-06 13:46 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  18. 2026-09-04 13:59 UTCEPSS rescoreEPSS 0.2% · 13th percentile
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  30. 2026-08-21 23:47 UTCEPSS rescoreEPSS 0.2% · 14th percentile
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  32. 2026-08-20 18:01 UTCOSV refresh
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  39. 2026-08-13 21:59 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  40. 2026-08-12 13:49 UTCEPSS rescoreEPSS 0.2% · 13th percentile
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  42. 2026-08-10 23:58 UTCEPSS rescoreEPSS 0.2% · 13th percentile
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  44. 2026-08-08 16:35 UTCEPSS rescoreEPSS 0.2% · 13th percentile
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  47. 2026-08-05 19:16 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  48. 2026-08-05 11:55 UTCEG score recompute
  49. 2026-08-05 11:55 UTCVendor advisory
  50. 2026-08-05 11:55 UTCGHSA enrichmentGHSA-qh6f-g265-fmxf · GitHub severity HIGH · GitHub CVSS 7.8
  51. 2026-08-04 15:08 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  52. 2026-08-04 11:39 UTCEG score recompute
  53. 2026-08-04 11:39 UTCVendor advisory
  54. 2026-08-04 11:39 UTCGHSA enrichmentGHSA-qh6f-g265-fmxf · GitHub severity HIGH · GitHub CVSS 7.8
  55. 2026-08-04 10:36 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  56. 2026-08-03 10:34 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  57. 2026-08-02 02:25 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  58. 2026-08-01 04:14 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  59. 2026-07-31 13:12 UTCOSV refresh
  60. 2026-07-30 16:26 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  61. 2026-07-30 01:29 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  62. 2026-07-28 15:35 UTCEPSS rescoreEPSS 0.2% · 13th percentile
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  65. 2026-07-25 14:16 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  66. 2026-07-24 14:16 UTCEPSS rescoreEPSS 0.2% · 13th percentile

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2024-50126?
CVE-2024-50126 is a high-severity vulnerability; its CVE record was published on November 5, 2024. In the Linux kernel, the following vulnerability has been resolved: net: sched: use RCU read-side critical section in taprio_dump() Fix possible use-after-free in 'taprio_dump()' by adding RCU read-side critical section there. Never seen on x86 but found on a KASAN-enabled arm64 system when…
When was the CVE record for CVE-2024-50126 published?
The CVE record for CVE-2024-50126 was published on November 5, 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-2024-50126 actively exploited?
CVE-2024-50126 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (12th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2024-50126?
CVE-2024-50126 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2024-50126?
A fix for CVE-2024-50126 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2024-50126 are linked in the Vendor Advisories panel on this page.

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