CVE-2026-52913

Linux kernel: null pointer dereference

Risk score: 48/100
CVSS: 5.5 v3.1
Exploit chance (30 days): 0.1%
Published: 24 Jun 2026

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What to know

What it is: In the Linux kernel, the following vulnerability has been resolved: batman-adv: v: stop OGMv2 on disabled interface When a batadv_hard_iface is disabled, its mesh_iface pointer is set to NULL. However, batadv_v_ogm_send_meshif() may still dispatch OGMs via batadv_v_ogm_queue_on_if() for interfaces that have since lost…
Affected: Linux kernel
Fix: Apply the vendor's security update; see the linked advisory.
Exploitation: No known exploitation

Story map

Story map: the flaws, the fix, how it unfolded and what it connects to. Boxes link to the record or article.

At a glance

Linux kernel: Amber, patch this week. In the Linux kernel, the following vulnerability has been resolved: ipv6: sr: restore network header before routing and forwarding ipv6_srh_rcv() runs with skb->data at the Segment Routing Header (SRH) while skb_network_header() points at the IPv6 header. When segments_left > 0, ipv6_srh_rcv() previously restored the …

The flaws

CVE-2026-52913: Null pointer dereference (CVSS 5.5 · EPSS 0%)
CVE-2026-98096: Out-of-bounds write (CVSS 7.4 · EPSS 1%)
CVE-2026-98115: Race condition (CVSS 8.8 · EPSS 0%)
CVE-2026-98117: Use-after-free (CVSS 7.8 · EPSS 0%)

The fix

Fix: Apply the vendor's security update; see the linked advisory.

Who is exposed: Linux kernel

Where it stands

No known exploitation

How it unfolded

6 Nov, Ubuntu security notices (official): USN-9002-1: Linux kernel (NVIDIA Tegra) vulnerabilities

Connects to

Same weakness: Null pointer dereference (CWE-476). 144 other warnings in 30 days
Same product: Earlier Linux kernel warnings. 156 in the last 90 days

Why it is Yellow

CVSS 5.5 medium
On your watchlist: linux kernel
Named in a government or vendor bulletin

Government and vendor bulletins

USN-9002-1: Linux kernel (NVIDIA Tegra) vulnerabilities

References

Original description

In the Linux kernel, the following vulnerability has been resolved: batman-adv: v: stop OGMv2 on disabled interface When a batadv_hard_iface is disabled, its mesh_iface pointer is set to NULL. However, batadv_v_ogm_send_meshif() may still dispatch OGMs via batadv_v_ogm_queue_on_if() for interfaces that have since lost their mesh_iface association. This results in a NULL pointer dereference when batadv_v_ogm_queue_on_if() unconditionally calls netdev_priv() on the now NULL hard_iface->mesh_iface to retrieve the batadv_priv. It is necessary to ensure that the batadv_v_ogm_queue_on_if() checks that it is using the same mesh_iface for which batadv_v_ogm_send_meshif() was called.

Last activity 6 Nov 2026. Patch Forecast updates every hour.