Vulnerability in Linux kernel (CVE-2026-93047)
Summary
Vulnerability in Linux kernel (CVE-2026-93047). Risk of unauthorized operations or information disclosure. Exploitable via has_implicit_dep.
Original description
The description as published by the source.
In the Linux kernel, the following vulnerability has been resolved:
drm/v3d: Associate BOs with every job that accesses them
A submission can expand into a chain of jobs (e.g. bin + render + cache
clean). Implicit synchronization in v3d_submit_lock_reservations() is gated
on each job's bo[], but the BO list was only ever attached to the last job
of the chain. When that last job is a trailing CACHE_CLEAN job, the job
that actually consumes the BOs (that is, a RENDER or CSD job) was left with
bo_count == 0 and picked up no implicit dependencies. It could therefore
be dispatched to the hardware and read a BO while another context was still
writing it, leading to data corruption.
Attach the BOs to the job that consumes them, so (1) it acquires the
correct implicit dependencies during reservation locking and (2) they are
kept mapped until the end of the submission. Give it references to all
consuming job's BOs through v3d_job_reference_bos() instead of looking the
handles up a second time; that avoids a redundant lookup and guarantees
both jobs reference the exact same objects.
As the CACHE_CLEAN job now carries a BO array as well, add a per-job
has_implicit_dep flag so that only the consuming jobs take implicit
dependencies. The CACHE_CLEAN job (a global flush) and the BIN job (binning
waiting on another context is not a realistic scenario) are excluded.
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-93047 has been found in Linux kernel.
Attackers can target a specific entry point like has_implicit_dep over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Linux kernel CVE-2026-93047" on the vendor's site.
CVE-2026-93047 (Linux kernel)
Attack surface: has_implicit_dep
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (unclassified) exists in Linux kernel. Attackers reach the vulnerable code path via has_implicit_dep.
Check the vendor advisory for the affected versions of Linux kernel. Attack surface: has_implicit_dep.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Linux kernel を使っているサービスとバージョンを洗い出す。
-
2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- web git.kernel.org
- web git.kernel.org
- web nvd.nist.gov
- web github.com