https://db.gcve.eu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Wed, 30 Sep 2026 05:47:37 +0000 https://db.gcve.eu/vuln/cve-2023-53669 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>tcp: fix skb_copy_ubufs() vs BIG TCP</p> <p>David Ahern reported crashes in skb_copy_ubufs() caused by TCP tx zerocopy using hugepages, and skb length bigger than ~68 KB.</p> <p>skb_copy_ubufs() assumed it could copy all payload using up to MAX_SKB_FRAGS order-0 pages.</p> <p>This assumption broke when BIG TCP was able to put up to 512 KB per skb.</p> <p>We did not hit this bug at Google because we use CONFIG_MAX_SKB_FRAGS=45 and limit gso_max_size to 180000.</p> <p>A solution is to use higher order pages if needed.</p> <p>v2: add missing __GFP_COMP, or we leak memory.</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>tcp: fix skb_copy_ubufs() vs BIG TCP</p> <p>David Ahern reported crashes in skb_copy_ubufs() caused by TCP tx zerocopy using hugepages, and skb length bigger than ~68 KB.</p> <p>skb_copy_ubufs() assumed it could copy all payload using up to MAX_SKB_FRAGS order-0 pages.</p> <p>This assumption broke when BIG TCP was able to put up to 512 KB per skb.</p> <p>We did not hit this bug at Google because we use CONFIG_MAX_SKB_FRAGS=45 and limit gso_max_size to 180000.</p> <p>A solution is to use higher order pages if needed.</p> <p>v2: add missing __GFP_COMP, or we leak memory.</p> https://db.gcve.eu/vuln/cve-2023-53669