CVE-2023-53669

Scores

EPSS

0.000none0.0%
0%20%40%60%80%100%

Percentile: 0.0%

Description

In the Linux kernel, the following vulnerability has been resolved: tcp: fix skb_copy_ubufs() vs BIG TCP David Ahern reported crashes in skb_copy_ubufs() caused by TCP tx zerocopy using hugepages, and skb length bigger than ~68 KB. skb_copy_ubufs() assumed it could copy all payload using up to MAX_SKB_FRAGS order-0 pages. This assumption broke when BIG TCP was able to put up to 512 KB per skb. We did not hit this bug at Google because we use CONFIG_MAX_SKB_FRAGS=45 and limit gso_max_size to 180000. A solution is to use higher order pages if needed. v2: add missing __GFP_COMP, or we leak memory.

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Sources

debianubuntu

Vulnerable Software (164)

Type: Configuration

Product: linux

Operating System: debian

Trait:
{  "fixed": "6.4.4-1"}

Source: debian

Type: Configuration

Product: linux

Operating System: debian bookworm 12

Trait:
{  "fixed": "6.1.37-1"}

Source: debian

Type: Configuration

Product: linux

Operating System: debian bullseye 11

Trait:
{  "unaffected": true}

Source: debian

Type: Configuration

Product: linux

Operating System: ubuntu bionic 18.04

Trait:
{  "unaffected": true}

Source: ubuntu

Type: Configuration

Product: linux

Operating System: ubuntu focal 20.04

Trait:
{  "unaffected": true}

Source: ubuntu

Type: Configuration

Product: linux

Operating System: ubuntu jammy 22.04

Trait:
{  "unaffected": true}

Source: ubuntu

Type: Configuration

Product: linux

Operating System: ubuntu trusty 14.04

Trait:
{  "unaffected": true}

Source: ubuntu

Type: Configuration

Product: linux

Operating System: ubuntu xenial 16.04

Trait:
{  "unaffected": true}

Source: ubuntu

Type: Configuration

Product: linux-allwinner-5.19

Operating System: ubuntu jammy 22.04

Trait:
{  "unfixed": true}

Source: ubuntu

Type: Configuration

Product: linux-aws

Operating System: ubuntu bionic 18.04

Trait:
{  "unaffected": true}

Source: ubuntu