---
cve: "CVE-2024-26834"
severity: "HIGH"
cvss: 7.5
epss: "0.6%"
vendor: "Linux"
kev: false
exploited: false
published: "2024-04-17 10:15:09"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T06:53:14+02:00"
---

# CVE-2024-26834

> 7.5 HIGH

## Beschreibung

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nft_flow_offload: release dst in case direct xmit path is used

Direct xmit does not use it since it calls dev_queue_xmit() to send
packets, hence it calls dst_release().

kmemleak reports:

unreferenced object 0xffff88814f440900 (size 184):
  comm "softirq", pid 0, jiffies 4294951896
  hex dump (first 32 bytes):
    00 60 5b 04 81 88 ff ff 00 e6 e8 82 ff ff ff ff  .`[.............
    21 0b 50 82 ff ff ff ff 00 00 00 00 00 00 00 00  !.P.............
  backtrace (crc cb2bf5d6):
    [] kmem_cache_alloc+0x286/0x340
    [] dst_alloc+0x43/0xb0
    [] rt_dst_alloc+0x2e/0x190
    [] __mkroute_output+0x244/0x980
    [] ip_route_output_flow+0xc0/0x160
    [] nf_ip_route+0xf/0x30
    [] nf_route+0x2d/0x60
    [] nft_flow_route+0x171/0x6a0 [nft_flow_offload]
    [] nft_flow_offload_eval+0x4e8/0x700 [nft_flow_offload]
    [] expr_call_ops_eval+0x53/0x330 [nf_tables]
    [] nft_do_chain+0x17c/0x840 [nf_tables]
    [] nft_do_chain_inet+0xa1/0x210 [nf_tables]
    [] nf_hook_slow+0x5b/0x160
    [] ip_forward+0x8b6/0x9b0
    [] ip_rcv+0x221/0x230
    [] __netif_receive_skb_one_core+0xfe/0x110

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- Kernel ≥ 6.6.19
- Kernel ≥ 6.7.7

## Referenzen

- <https://git.kernel.org/stable/c/13b57b5cd591d5b22f9bbf047b2922967de411f3>
- <https://git.kernel.org/stable/c/a6cafdb49a7bbf4a88367db209703eee6941e023>
- <https://git.kernel.org/stable/c/9256ab9232e35a16af9c30fa4e522e6d1bd3605a>
- <https://git.kernel.org/stable/c/2d17cf10179a7de6d8f0128168b84ad0b4a1863f>
- <https://git.kernel.org/stable/c/8762785f459be1cfe6fcf7285c123aad6a3703f0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2024-26834) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_