Security readout for executives and security teams
Plain-English summary
A flaw in Linux asynchronous I/O completion handling can dereference an invalid pointer during a timing-sensitive wakeup race. The supplied CVSS score is 7.8 because a low-privileged local attacker could potentially affect confidentiality, integrity, and availability. The sources do not establish remote reachability or successful exploitation.
Executive priority
Treat as a high-priority kernel maintenance issue, especially on shared compute, development, hosting, or other systems permitting untrusted local activity. It is not evidenced as an internet-triggered emergency or actively exploited vulnerability. Patch through normal expedited kernel processes after confirming distribution applicability.
Technical view
The completion path accessed a wait-queue entry after list_del_init_careful() had effectively released protected access. Concurrent finish_wait() processing could return while aio_complete() still attempted a wakeup using an overwritten task_struct pointer, causing a null-pointer dereference. Kernel commits referenced by the CVE correct the ordering.
Likely exposure
Exposure is limited to systems running affected Linux kernel versions where a low-privileged local user or workload can reach asynchronous I/O functionality. The bundle identifies versions around Linux 6.8 through 6.9, but its version data is ambiguous; confirm exact affected and fixed releases with kernel or distribution advisories.
Exploitation context
The CVSS vector indicates local access, low complexity, low privileges, and no user interaction. The bundle marks this CVE as absent from KEV, and no supplied source reports active exploitation. The technical description establishes a crash-prone race but does not demonstrate privilege escalation or reliable compromise.
Researcher notes
The core issue is synchronization and access ordering around wait-queue removal and completion wakeup. The cited kernel commits are the strongest remediation evidence. The supplied record has no CWE and unclear version boundaries, so avoid inferring additional affected branches, exploitation primitives, or guaranteed confidentiality and integrity impact from the description alone.
Mitigation direction
- Apply the corrected kernel supplied by the system vendor or Linux distribution.
- Check vendor guidance for exact fixed versions because the supplied version ranges are ambiguous.
- Prioritize multi-user systems and hosts running untrusted or low-trust local workloads.
- Restrict unnecessary local access until affected kernels are updated.
Validation and detection
- Record each host's running kernel version and distribution package release.
- Compare installed packages against the distribution's CVE advisory or fixed-kernel guidance.
- Confirm the replacement kernel is running after patching and rebooting.
- Review kernel logs for asynchronous-I/O-related null-pointer faults or unexpected crashes.
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.
CVE-2024-35874 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
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9LinuxVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/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/9678bcc6234d83759fe091c197f5017a32b468daCVE reference, Linux
- https://git.kernel.org/stable/c/caeb4b0a11b3393e43f7fa8e0a5a18462acc66bdCVE 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.