CVE-2026-43092
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
xsk: validate MTU against usable frame size on bind
In the Linux kernel, the following vulnerability has been resolved: xsk: validate MTU against usable frame size on bind AF_XDP bind currently accepts zero-copy pool configurations without verifying that the device MTU fits into the usable frame space provided by the UMEM chunk. This becomes a problem since we started to respect tailroom which is subtracted from chunk_size (among with headroom). 2k chunk size might not provide enough space for standard 1500 MTU, so let us catch such settings at bind time. Furthermore, validate whether underlying HW will be able to satisfy configured MTU wrt XSK's frame size multiplied by supported Rx buffer chain length (that is exposed via net_device::xdp_zc_max_segs).
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) |
|---|---|---|---|---|---|
| 24ea50127ecf0efe819c1f6230add27abc6ca9d9 | affected | git | a55793e5a97d4e39bdb380873a9780fe0010bff6 | Unavailable | None listed |
| 24ea50127ecf0efe819c1f6230add27abc6ca9d9 | affected | git | f669d60db11dbabb96279f2b20f9d1cba43cddb2 | Unavailable | None listed |
| 24ea50127ecf0efe819c1f6230add27abc6ca9d9 | affected | git | 25e1e91a8da819924df0b16e3812d7b24c8ce133 | Unavailable | None listed |
| 24ea50127ecf0efe819c1f6230add27abc6ca9d9 | affected | git | b2f4daa6422fd6cc0cec969794dab4a88ea4cea1 | Unavailable | None listed |
| 24ea50127ecf0efe819c1f6230add27abc6ca9d9 | affected | git | 36ee60b569ba0dfb6f961333b90d19ab5b323fa9 | 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) |
|---|---|---|---|---|---|
| 6.6 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 6.6 | Unavailable | None listed |
| 6.6.136 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.83 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.24 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 6.19.14 | unaffected | semver | Unavailable | 6.19.* | None listed |
| 7.0 | unaffected | original_commit_for_fix | Unavailable | * | None listed |