HOOG · CVSS 7.8
ACTIEF MISBRUIKT
PATCH BESCHIKBAAR
CVE-2026-46300: Linux Kernel Missing Initialization of a Variable Vulnerability
| Leverancier | Linux |
|---|---|
| Product | Kernel |
| CVSS-score | 7.8 · CVSS 3.1 · HOOGCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 16,1% (percentiel 97) |
| Actief misbruikt | Ja |
| Toegevoegd aan CISA KEV | 28 okt 2026 |
| CISA-deadline (Amerikaanse overheid) | 31 okt 2026 |
| Zwakte (CWE) | CWE-123, CWE-456, CWE-787 |
| Gepubliceerd in NVD | 23 mei 2026 |
| Laatst gewijzigd in NVD | 29 okt 2026 |
| NVD-status | Analyzed |
Getroffen versies
| Product | Getroffen versies | Opgelost in |
|---|---|---|
| Redhat Openshift Container Platform | vanaf 4.12 vóór 4.12.91 | 4.12.91 |
| Redhat Openshift Container Platform | vanaf 4.13 vóór 4.13.67 | 4.13.67 |
| Redhat Openshift Container Platform | vanaf 4.14 vóór 4.14.68 | 4.14.68 |
| Redhat Openshift Container Platform | vanaf 4.15 vóór 4.15.65 | 4.15.65 |
| Redhat Openshift Container Platform | vanaf 4.16 vóór 4.16.63 | 4.16.63 |
| Redhat Openshift Container Platform | vanaf 4.17 vóór 4.17.55 | 4.17.55 |
| Redhat Openshift Container Platform | vanaf 4.18 vóór 4.18.43 | 4.18.43 |
| Redhat Openshift Container Platform | vanaf 4.19 vóór 4.19.33 | 4.19.33 |
| Redhat Openshift Container Platform | vanaf 4.20 vóór 4.20.24 | 4.20.24 |
| Redhat Openshift Container Platform | vanaf 4.21 vóór 4.21.17 | 4.21.17 |
| Linux Linux Kernel | vanaf 5.11 vóór 5.15.208 | 5.15.208 |
| Linux Linux Kernel | vanaf 5.16 vóór 6.1.174 | 6.1.174 |
| Linux Linux Kernel | vanaf 6.7 vóór 6.12.91 | 6.12.91 |
| Linux Linux Kernel | vanaf 6.13 vóór 6.18.33 | 6.18.33 |
| Linux Linux Kernel | vanaf 6.2 vóór 6.6.141 | 6.6.141 |
| Linux Linux Kernel | vanaf 6.19 vóór 7.0.10 | 7.0.10 |
| Linux Linux Kernel | vanaf 3.9 tot en met 5.10.257 | – |
| Linux Linux Kernel | 7.1 | – |
| Linux Linux Kernel | 7.1 | – |
| Linux Linux Kernel | 7.1 | – |
+20 meer
Vereiste actie (tekst van CISA, Engels)
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Beschrijving (NVD, Engels)
In the Linux kernel, the following vulnerability has been resolved:
net: skbuff: preserve shared-frag marker during coalescing
skb_try_coalesce() can attach paged frags from @from to @to. If @from
has SKBFL_SHARED_FRAG set, the resulting @to skb can contain the same
externally-owned or page-cache-backed frags, but the shared-frag marker
is currently lost.
That breaks the invariant relied on by later in-place writers. In
particular, ESP input checks skb_has_shared_frag() before deciding
whether an uncloned nonlinear skb can skip skb_cow_data(). If TCP
receive coalescing has moved shared frags into an unmarked skb, ESP can
see skb_has_shared_frag() as false and decrypt in place over page-cache
backed frags.
Propagate SKBFL_SHARED_FRAG when skb_try_coalesce() transfers paged
frags. The tailroom copy path does not need the marker because it copies
bytes into @to's linear data rather than transferring frag descriptors.
BRONNEN
Andere lekken bij Linux
- CVE-2026-53266: Linux Kernel Out-of-Bounds Write Vulnerability
- CVE-2025-39964: Linux Kernel Race Condition Vulnerability
- CVE-2025-39682: Linux Kernel Improper Check for Unusual or Exceptional Conditions Vulnerability
- CVE-2026-53362: Linux Kernel Unspecified Vulnerability
- CVE-2022-0995: Linux Kernel Out-of-Bounds Write Vulnerability
Gegevens van NVD, CISA KEV, FIRST EPSS en adviezen van leveranciers. Bijgewerkt 29 okt 2026.