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CVE-2026-46331net/sched: fix pedit partial COW leading to page cache corruption

Linux Linux; Red Hat NVIDIA for RHEL 10; Red Hat Red Hat Enterprise Linux 10; Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support Veröffentlicht: (vor 4 Monaten)

Beschreibung

In the Linux kernel, the following vulnerability has been resolved: net/sched: fix pedit partial COW leading to page cache corruption tcf_pedit_act() computes the COW range for skb_ensure_writable() once before the key loop using tcfp_off_max_hint, but the hint does not account for the runtime header offset added by typed keys. This can leave part of the write region un-COW'd. Fix by moving skb_ensure_writable() inside the per-key loop where the actual write offset is known, and add overflow checking on the offset arithmetic. For negative offsets (e.g. Ethernet header edits at ingress), use skb_cow() to COW the headroom instead. Guard offset_valid() against INT_MIN, where negation is undefined.

Schwachstellentyp (CWE): CWE-787CWE-190

Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.

Betroffene Produkte und Versionen

HerstellerProduktVersionen
enterprise linux 8 —
enterprise linux nvidia 10 —
Linux Linux 5.10.117 – < 5.10.260, 5.15.41 – < 5.15.211, 4.19.244 – < 4.20, 5.4.195 – < 5.5, 5.17.9 – < 5.18
linux linux kernel 5.10.117 – < 5.10.260
openshift 4.12 —
openshift 4.13 —
openshift 4.14 —
openshift 4.15 —
openshift 4.16 —
openshift 4.17 —
openshift 4.18 —
openshift 4.19 —
openshift 4.20 —
openshift 4.21 —
openshift 4.22 —
Red Hat NVIDIA for RHEL 10 all versions
Red Hat Red Hat Enterprise Linux 10 all versions
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support all versions
Red Hat Red Hat Enterprise Linux 6 —
Red Hat Red Hat Enterprise Linux 7 —
Red Hat Red Hat Enterprise Linux 8 all versions
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support all versions
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On all versions
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support all versions
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On all versions
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service all versions
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions all versions
Red Hat Red Hat Enterprise Linux 9 all versions
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions all versions
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions all versions
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support all versions
Red Hat Red Hat OpenShift Container Platform 4 all versions
Red Hat Red Hat OpenShift Container Platform 4.12 all versions
Red Hat Red Hat OpenShift Container Platform 4.13 all versions
Red Hat Red Hat OpenShift Container Platform 4.14 all versions
Red Hat Red Hat OpenShift Container Platform 4.15 all versions
Red Hat Red Hat OpenShift Container Platform 4.16 all versions
Red Hat Red Hat OpenShift Container Platform 4.17 all versions
Red Hat Red Hat OpenShift Container Platform 4.18 all versions
Red Hat Red Hat OpenShift Container Platform 4.19 all versions
Red Hat Red Hat OpenShift Container Platform 4.20 all versions
Red Hat Red Hat OpenShift Container Platform 4.21 all versions
Red Hat Red Hat OpenShift Container Platform 4.22 all versions
rhel e4s 9.2 —
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem 0

Referenzen und Patches

CPE-Treffer (NVD) (16)
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* ≥ 4.19.244 < 4.20
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* ≥ 5.4.195 < 5.5
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* ≥ 5.10.117 < 5.11
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* ≥ 5.15.41 < 5.16
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* ≥ 5.17.9 < 5.18
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* ≥ 5.18.1 < 6.12.94
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* ≥ 6.13 < 6.18.36
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* ≥ 6.19 < 7.0.13
  • cpe:2.3:o:linux:linux_kernel:5.18:-:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.18:rc7:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:7.1:rc6:*:*:*:*:*:*

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