CVE-2024-26677: linux NULL Pointer Dereference
CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2024-26677DEBIAN-CVE-2024-26677
Published 02-04-2024Last modified 11-05-2026
Vulnerability summary
CVE-2024-26677 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.2% of scored vulnerabilities.
CVSS score
5.5/10
010
Medium · v3.1 (NVD)EPSS score
0.24%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 28 · Related 28SUSE-SU-2024:3189-1SUSE-SU-2024:3190-1SUSE-SU-2024:3194-1SUSE-SU-2024:3195-1SUSE-SU-2024:3209-1SUSE-SU-2024:3251-1SUSE-SU-2024:3252-1SUSE-SU-2024:3383-1SUSE-SU-2024:3483-1SUSE-SU-2025:20044-1SUSE-SU-2025:20047-1USN-6895-1USN-6895-2USN-6895-3USN-6895-4USN-6900-1USN-7021-1USN-7021-2USN-7021-3USN-7021-4USN-7021-5USN-7022-1USN-7022-2USN-7022-3USN-7028-1USN-7028-2USN-7039-1USN-7119-1
Timeline
- 02-04-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix delayed ACKs to not set the reference serial number Fix the construction of delayed ACKs to not set the reference serial number as they can't be used as an RTT reference.
CVSS metrics
3 scores · 3 sources · 1 versionMedium 5.5Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.24%
Chance of exploitation in the next 30 days
Percentile
14%
Versus all other CVEs
30-day change
0.00 pp
From 0.24% on 19-09-2026
19-09-202619-10-2026
EPSS score0.24%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu116 products
- linuxAll versions (No fix recorded) | < 4.4.0-259.293 | < 4.15.0-229.241 | < 5.4.0-196.216 | < 5.15.0-122.132
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 4.4.0-1136.142 | < 4.4.0-1174.189 | < 4.15.0-1173.186 | < 5.4.0-1133.143 | < 5.15.0-1070.76
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < 200cb50b9e154434470c8969d32474d38475acc2 | ≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < 63719f490e6a89896e9a463d2b45e8203eab23ae | ≥ 17926a79320afa9b95df6b977b40cca6d8713cea, < e7870cf13d20f56bfc19f9c3e89707c69cf104ef | 2.6.22
- linux_kernel≥ 2.6.22, < 6.6.17 | ≥ 6.7, < 6.7.5 | 6.8:rc1 | 6.8:rc2 | 6.8:rc3
Debian1 product
- linuxAll versions (No fix recorded) | < 6.7.7-1
3 vendors · 119 products