Security readout for executives and security teams
Plain-English summary
CVE-2024-26590 can crash a Linux system when a crafted EROFS filesystem image requests an unsupported per-file compression algorithm. The impact is denial of service, not data theft or code execution, based on the provided sources.
Executive priority
Treat this as a moderate availability risk. Prioritize shared Linux hosts, container platforms, CI systems, and appliances that process filesystem images. It is not described as remote compromise.
Technical view
The Linux EROFS code failed to validate per-inode compression format requests against the superblock’s available compression algorithms. A crafted image could trigger a NULL pointer dereference when the decompressor was not built in. The fix adds validation against available_compr_algs.
Likely exposure
Exposure is most relevant where local users, containers, build systems, forensic tools, or appliances can mount or process untrusted EROFS images. Systems that never handle EROFS images are less likely to be exposed.
Exploitation context
The CVSS vector is local, low complexity, low privileges, no user interaction, with high availability impact. The source bundle does not show CISA KEV listing or cited evidence of active exploitation.
Researcher notes
Evidence supports a crafted-image denial-of-service condition in Linux EROFS. The provided affected-version data is limited and should be reconciled against distro kernel advisories and commit backports before declaring systems fixed.
Mitigation direction
- Apply a vendor kernel update containing the referenced Linux stable fixes.
- Check distribution advisories for backported fixes to supported kernels.
- Restrict local users and workloads from mounting untrusted filesystem images.
- Reduce or disable EROFS usage where it is not operationally required.
- Prioritize hardened mount policies for containers and build hosts.
Validation and detection
- Inventory Linux kernel versions on systems that use or mount EROFS.
- Confirm whether vendor kernels include the referenced stable commits or backports.
- Review whether untrusted users or workloads can provide filesystem images.
- Check EROFS-related kernel configuration and module exposure.
- Validate that monitoring covers kernel oops or panic events.
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-476: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2024-26590 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
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H1.83.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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/47467e04816cb297905c0f09bc2d11ef865942d9CVE reference, Linux
- https://git.kernel.org/stable/c/823ba1d2106019ddf195287ba53057aee33cf724CVE reference, Linux
- https://git.kernel.org/stable/c/eed24b816e50c6cd18cbee0ff0d7218c8fced199CVE reference, Linux
- https://git.kernel.org/stable/c/118a8cf504d7dfa519562d000f423ee3ca75d2c4CVE reference, Linux
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.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.