7.8

CVE-2024-50127: net: sched: fix use-after-free in taprio_change()

Modified
AliasesUBUNTU-CVE-2024-50127DEBIAN-CVE-2024-50127
Published 05-11-2024Last modified 15-10-2026

Vulnerability summary

CVE-2024-50127 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 16% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.25%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 90 · Related 87
DLA-4008-1DLA-4075-1MGASA-2024-0368MGASA-2024-0369OPENSUSE-SU-2024:14500-1OPENSUSE-SU-2025:14705-1

Timeline

  1. 05-11-2024
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: net: sched: fix use-after-free in taprio_change() In 'taprio_change()', 'admin' pointer may become dangling due to sched switch / removal caused by 'advance_sched()', and critical section protected by 'q->current_entry_lock' is too small to prevent from such a scenario (which causes use-after-free detected by KASAN). Fix this by prefer 'rcu_replace_pointer()' over 'rcu_assign_pointer()' to update 'admin' immediately before an attempt to schedule freeing.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.25%

Chance of exploitation in the next 30 days

Percentile

16%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.25% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu130 products
  • linux< 5.4.0-208.228 | < 5.15.0-133.144 | < 6.8.0-58.60
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.4.0-1140.150 | < 5.15.0-1078.85 | < 6.8.0-1027.29
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ a3d43c0d56f1b94e74963a2fbadfb70126d92213, < 2f868ce6013548a713c431c679ef73747a66fcf3 | ≥ a3d43c0d56f1b94e74963a2fbadfb70126d92213, < 8a283a19026aaae8a773fd8061263cfa315b127f | ≥ a3d43c0d56f1b94e74963a2fbadfb70126d92213, < 999612996df28d81f163dad530d7f8026e03aec6 | ≥ a3d43c0d56f1b94e74963a2fbadfb70126d92213, < fe371f084073e8672a2d7d46b335c3c060d1e301 | ≥ a3d43c0d56f1b94e74963a2fbadfb70126d92213, < 0d4c0d2844e4eac3aed647f948fd7e60eea56a61 | ≥ a3d43c0d56f1b94e74963a2fbadfb70126d92213, < 2240f9376f20f8b6463232b4ca7292569217237f | ≥ a3d43c0d56f1b94e74963a2fbadfb70126d92213, < f504465970aebb2467da548f7c1efbbf36d0f44b | 5.2
  • linux_kernel≥ 5.2, < 5.15.170 | ≥ 5.16, < 6.1.115 | ≥ 6.2, < 6.6.59 | ≥ 6.7, < 6.11.6 | 6.12:rc1 | 6.12:rc2 | 6.12:rc3 | 6.12:rc4
Debian1 product
  • linux< 6.1.115-1 | < 6.11.6-1

3 vendors · 133 products

References

52 links
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