Security readout for executives and security teams
Plain-English summary
This Linux kernel issue affects eCryptfs, an encrypted filesystem feature. A too-small buffer can be overwritten by up to three bytes when eCryptfs creates metadata for a file. The public sources show a kernel memory-safety bug and stable-kernel fixes, but do not show active exploitation or a confirmed business-impact severity.
Executive priority
Prioritize patching on systems where eCryptfs is used for user or application storage. Treat this as a kernel memory-safety issue with unclear exploitability, not as a confirmed emergency. Asset owners should verify exposure before broad operational disruption.
Technical view
write_tag_66_packet() can write past the allocated tag 66 packet buffer because the allocation omitted cipher code and checksum fields. The provided KASAN trace shows a slab out-of-bounds write during ecryptfs_generate_key_packet_set() while creating a file. Fixed stable commits increase the allocation size.
Likely exposure
Exposure is most likely on Linux systems that support and actively use eCryptfs. Systems that do not mount or use eCryptfs are less likely to be reachable through normal operations, based on the provided trigger path.
Exploitation context
The bundle marks KEV as false and provides no cited evidence of exploitation in the wild. The demonstrated trigger is local file creation in an eCryptfs context. No public source in the bundle proves remote exploitation or privilege escalation.
Researcher notes
The source bundle lacks CVSS, CWE, and exploitability analysis. The strongest evidence is the upstream kernel description and KASAN trace showing a 3-byte slab out-of-bounds write in the eCryptfs metadata path. Avoid asserting impact beyond memory corruption without vendor analysis.
Mitigation direction
- Apply Linux kernel updates containing the cited stable eCryptfs fix.
- Use distribution advisories, such as Debian LTS, for package-specific remediation.
- Check vendor guidance for embedded or appliance Linux distributions.
- Reduce or retire eCryptfs usage where vendor guidance supports doing so.
Validation and detection
- Inventory Linux systems using eCryptfs mounts or eCryptfs user workflows.
- Check running kernel versions against vendor-fixed kernel packages.
- Confirm relevant stable-kernel fix commits are present in deployed kernels.
- Review security advisories from Linux distribution or appliance vendors.
Public sources used
- CVE Program
- CVE List V5
- Linux stable commit 1c125b9287e5
- Linux stable commit 235b85981051
- Linux stable commit edbfc42ab080
- Linux stable commit 12db25a54ce6
- Linux stable commit 0d0f8ba042af
- Linux stable commit 2ed750b7ae1b
- Linux stable commit a20f09452e2f
- Linux stable commit f6008487f1ee
- Linux stable commit 85a6a1aff08e
- Debian LTS announce
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.
CVE-2024-38578 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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
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/1c125b9287e58f364d82174efb167414b92b11f1CVE reference, Linux
- https://git.kernel.org/stable/c/235b85981051cd68fc215fd32a81c6f116bfc4dfCVE reference, Linux
- https://git.kernel.org/stable/c/edbfc42ab080e78c6907d40a42c9d10b69e445c1CVE reference, Linux
- https://git.kernel.org/stable/c/12db25a54ce6bb22b0af28010fff53ef9cb3fe93CVE reference, Linux
- https://git.kernel.org/stable/c/0d0f8ba042af16519f1ef7dd10463a33b21b677cCVE reference, Linux
- https://git.kernel.org/stable/c/2ed750b7ae1b5dc72896d7dd114c419afd3d1910CVE reference, Linux
- https://git.kernel.org/stable/c/a20f09452e2f58f761d11ad7b96b5c894c91030eCVE reference, Linux
- https://git.kernel.org/stable/c/f6008487f1eeb8693f8d2a36a89c87d9122ddf74CVE reference, Linux
- https://git.kernel.org/stable/c/85a6a1aff08ec9f5b929d345d066e2830e8818e5CVE reference, Linux
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlCVE reference, CVE
- https://cert-portal.siemens.com/productcert/html/ssa-265688.htmlCVE reference, siemens-SADP
- https://cert-portal.siemens.com/productcert/html/ssa-613116.htmlCVE reference, siemens-SADP
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.