7.8

CVE-2024-56603: net: af_can: do not leave a dangling sk pointer in can_create()

Modified
AliasesUBUNTU-CVE-2024-56603DEBIAN-CVE-2024-56603
Published 27-12-2024Last modified 05-08-2026

Vulnerability summary

CVE-2024-56603 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.8% 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
0.24%
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 51 · Related 45
DLA-4075-1DLA-4076-1MGASA-2025-0030MGASA-2025-0032RHSA-2025:20518RHSA-2026:19569

Timeline

  1. 27-12-2024
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: net: af_can: do not leave a dangling sk pointer in can_create() On error can_create() frees the allocated sk object, but sock_init_data() has already attached it to the provided sock object. This will leave a dangling sk pointer in the sock object and may cause use-after-free later.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

15%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.24% 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.

Ubuntu135 products
  • linuxAll versions (No fix recorded) | < 5.4.0-211.231 | < 5.15.0-135.146 | < 6.8.0-58.60
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.4.0-1142.152 | < 5.15.0-1080.87 | < 6.8.0-1027.29
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 0d66548a10cbbe0ef256852d63d30603f0f73f9b, < 884ae8bcee749be43a071d6ed2d89058dbd2425c | ≥ 0d66548a10cbbe0ef256852d63d30603f0f73f9b, < ce39b5576785bb3e66591145aad03d66bc3e778d | ≥ 0d66548a10cbbe0ef256852d63d30603f0f73f9b, < 1fe625f12d090d69f3f084990c7e4c1ff94bfe5f | ≥ 0d66548a10cbbe0ef256852d63d30603f0f73f9b, < 5947c9ac08f0771ea8ed64186b0d52e9029cb6c0 | ≥ 0d66548a10cbbe0ef256852d63d30603f0f73f9b, < db207d19adbac96058685f6257720906ad41d215 | ≥ 0d66548a10cbbe0ef256852d63d30603f0f73f9b, < 8df832e6b945e1ba61467d7f1c9305e314ae92fe | ≥ 0d66548a10cbbe0ef256852d63d30603f0f73f9b, < 811a7ca7320c062e15d0f5b171fe6ad8592d1434 | 2.6.25
  • linux_kernel< 5.4.287 | ≥ 5.5, < 5.10.231 | ≥ 5.11, < 5.15.174 | ≥ 5.16, < 6.1.120 | ≥ 6.2, < 6.6.66 | ≥ 6.7, < 6.12.5
Debian1 product
  • linux< 6.1.123-1 | < 6.12.5-1

3 vendors · 138 products

References

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