Security readout for executives and security teams
Plain-English summary
A Linux AFS kernel routine used a buffer too small to format the largest possible volume identifier. An overflow could threaten system confidentiality, integrity, and availability. The supplied CVSS score is 8.1, but the sources provide no evidence of active exploitation.
Executive priority
Treat this as a high-priority patch-management issue, particularly for AFS-dependent infrastructure. Its theoretical impact is broad, but current evidence does not justify declaring an active-exploitation emergency. Confirm exposure promptly and accelerate supported kernel updates where applicable.
Technical view
In afs_update_volume_status(), a volume identifier may require 20 characters plus a terminating NUL. The idbuf array was undersized. The referenced kernel correction increases it to 24 bytes and uses snprintf(). The supplied CVSS vector indicates network access, high complexity, no privileges, and no user interaction.
Likely exposure
Potential exposure includes systems running affected Linux kernel release lines where AFS functionality is present or used. The supplied flattened version data does not clearly preserve vulnerable range boundaries or downstream backports, so installed distribution builds require vendor-specific verification.
Exploitation context
The bundle marks this CVE as absent from KEV and cites no active exploitation, public proof of concept, or observed attacks. Although the CVSS vector describes a network attack path without authentication, the precise triggering conditions are not documented in the supplied sources.
Researcher notes
Linux Verification Center reportedly found the issue using SVACE. The defect concerns formatting a maximum-length volume identifier into an undersized buffer. The source bundle provides the correction and branch-specific commits, but no trigger analysis, exploitability demonstration, CWE assignment, or forensic indicators.
Mitigation direction
- Apply a vendor-supported kernel containing the referenced AFS correction, following distributor guidance.
- Prioritize affected systems that use AFS and have network exposure.
- If patching is delayed, check vendor guidance; the supplied sources name no separate mitigation.
Validation and detection
- Inventory running kernel builds and identify systems using AFS.
- Compare distributor package changelogs or kernel source with the referenced stable commits.
- Confirm the correction enlarges idbuf to 24 bytes and uses snprintf().
- Verify the running kernel reflects the remediated build after maintenance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CVE-2024-26736 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H2.25.9LinuxVulnerability scoring details
Base CVSS 3.1 score
8.1HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/5c27d85a69fa16a08813ba37ddfb4bbc9a1ed6b5CVE reference, Linux
- https://git.kernel.org/stable/c/d9b5e2b7a8196850383c70d099bfd39e81ab6637CVE reference, Linux
- https://git.kernel.org/stable/c/e56662160fc24d28cb75ac095cc6415ae1bda43eCVE reference, Linux
- https://git.kernel.org/stable/c/e8530b170e464017203e3b8c6c49af6e916aece1CVE reference, Linux
- https://git.kernel.org/stable/c/6e6065dd25b661420fac19c34282b6c626fcd35eCVE reference, Linux
- https://git.kernel.org/stable/c/d34a5e57632bb5ff825196ddd9a48ca403626dfaCVE reference, Linux
- https://git.kernel.org/stable/c/6ea38e2aeb72349cad50e38899b0ba6fbcb2af3dCVE reference, Linux
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlCVE reference, CVE · x_transferred
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.