CVE-2023-53669
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2023
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
tcp: fix skb_copy_ubufs() vs BIG TCP
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 7c4e983c4f3cf94fcd879730c6caa877e0768a4d | affected | git | 7fa93e39fbb0566019c388a8038a4d58552e0910 | Unavailable | None listed |
| 7c4e983c4f3cf94fcd879730c6caa877e0768a4d | affected | git | 3c77a377877acbaf03cd7caa21d3644a5dd16301 | Unavailable | None listed |
| 7c4e983c4f3cf94fcd879730c6caa877e0768a4d | affected | git | 9cd62f0ba465cf647c7d8c2ca7b0d99ea0c1328f | Unavailable | None listed |
| 7c4e983c4f3cf94fcd879730c6caa877e0768a4d | affected | git | 7e692df3933628d974acb9f5b334d2b3e885e2a6 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.19 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.19 | Unavailable | None listed |
| 6.1.29 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.2.16 | unaffected | semver | Unavailable | 6.2.* | None listed |
| 6.3.3 | unaffected | semver | Unavailable | 6.3.* | None listed |
| 6.4 | unaffected | original_commit_for_fix | Unavailable | * | None listed |