Security readout for executives and security teams
Plain-English summary
CVE-2024-26984 is a Linux kernel bug in the nouveau graphics driver. A race condition can crash the kernel when concurrent GPU memory operations hit an uninitialized pointer. The known impact is system availability, not data theft or privilege escalation based on the supplied sources.
Executive priority
Treat this as a medium-priority availability issue. Patch in normal kernel maintenance cycles, with faster handling for shared GPU systems, developer workstations, CI runners, and any host where local users can run GPU workloads.
Technical view
The bug is CWE-362 in nouveau instmem pointer publication. Concurrent nv50_instobj_acquire activity can let one thread observe a reference before ptrs is safely stored, leading to a NULL pointer dereference in gp100_vmm_pgt_mem. The fix adds paired memory barriers.
Likely exposure
Exposure is most likely on Linux systems using the nouveau driver for NVIDIA GPUs and kernels in affected vendor ranges. Servers, desktops, CI hosts, or GPU test systems running parallel Vulkan/GPU workloads are more relevant than systems without nouveau loaded.
Exploitation context
The CVSS vector is local, low complexity, low privilege, no user interaction, with high availability impact. The bundle marks KEV false and provides no evidence of active exploitation. The report describes rare crashes during heavy parallel VK CTS testing.
Researcher notes
Evidence supports a race-triggered kernel crash in nouveau, fixed upstream by memory-ordering changes. The supplied sources do not support confidentiality impact, integrity impact, remote exploitation, or weaponized exploitation. Version mapping should be validated through distribution advisories.
Mitigation direction
- Apply Linux kernel updates from your distribution or upstream stable branch.
- Prioritize systems where the nouveau module is loaded or NVIDIA GPUs are present.
- Review Debian, Fedora, and vendor kernel advisories for fixed package versions.
- If patching is delayed, follow vendor guidance for temporary operational risk reduction.
Validation and detection
- Inventory kernel versions and compare them with vendor advisories for CVE-2024-26984.
- Check whether the nouveau module is loaded on Linux endpoints or servers.
- Review crash logs for nouveau NULL pointer dereferences in GPU memory mapping paths.
- Confirm updated kernels include the referenced upstream stable fix commits.
Public sources used
- CVE Program
- CVE List V5
- Linux stable commit bba8ec5e
- Linux stable commit 1bc4825d
- Linux stable commit 13d76b2f
- Linux stable commit 3ab05681
- Linux stable commit ad74d208
- Linux stable commit a019b44b
- Linux stable commit 21ca9539
- Linux stable commit fff1386c
- Debian LTS advisory 2024-06 msg00017
- Debian LTS advisory 2024-06 msg00020
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-362: 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-2024-26984 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/bba8ec5e9b16649d85bc9e9086bf7ae5b5716ff9CVE reference, Linux
- https://git.kernel.org/stable/c/1bc4825d4c3ec6abe43cf06c3c39d664d044cbf7CVE reference, Linux
- https://git.kernel.org/stable/c/13d76b2f443dc371842916dd8768009ff1594716CVE reference, Linux
- https://git.kernel.org/stable/c/3ab056814cd8ab84744c9a19ef51360b2271c572CVE reference, Linux
- https://git.kernel.org/stable/c/ad74d208f213c06d860916ad40f609ade8c13039CVE reference, Linux
- https://git.kernel.org/stable/c/a019b44b1bc6ed224c46fb5f88a8a10dd116e525CVE reference, Linux
- https://git.kernel.org/stable/c/21ca9539f09360fd83654f78f2c361f2f5ddcb52CVE reference, Linux
- https://git.kernel.org/stable/c/fff1386cc889d8fb4089d285f883f8cba62d82ceCVE reference, Linux
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlCVE reference, CVE · x_transferred
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlCVE reference, CVE · x_transferred
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/CVE reference, CVE
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/CVE reference, CVE
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/CVE reference, CVE
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.
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.