CVE-2026-46043
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)
RDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv
In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv rxe_rcv() currently checks only that the incoming packet is at least header_size(pkt) bytes long before payload_size() is used. However, payload_size() subtracts both the attacker-controlled BTH pad field and RXE_ICRC_SIZE from pkt->paylen: payload_size = pkt->paylen - offset[RXE_PAYLOAD] - bth_pad(pkt) - RXE_ICRC_SIZE This means a short packet can still make payload_size() underflow even if it includes enough bytes for the fixed headers. Simply requiring header_size(pkt) + RXE_ICRC_SIZE is not sufficient either, because a packet with a forged non-zero BTH pad can still leave payload_size() negative and pass an underflowed value to later receive-path users. Fix this by validating pkt->paylen against the full minimum length required by payload_size(): header_size(pkt) + bth_pad(pkt) + RXE_ICRC_SIZE.
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) |
|---|---|---|---|---|---|
| 8700e3e7c4857d28ebaa824509934556da0b3e76 | affected | git | c4376c672c3648d5bdc31dfffc329d07164f93c4 | Unavailable | None listed |
| 8700e3e7c4857d28ebaa824509934556da0b3e76 | affected | git | 5fedefec757192dcaad29a664ac332c7601be144 | Unavailable | None listed |
| 8700e3e7c4857d28ebaa824509934556da0b3e76 | affected | git | 2c0d71ef12f46c57d37bc571f3f2797db7eb50cc | Unavailable | None listed |
| 8700e3e7c4857d28ebaa824509934556da0b3e76 | affected | git | 2fd4f8b749309a61c3f3f88ee8891d94f79e1240 | Unavailable | None listed |
| 8700e3e7c4857d28ebaa824509934556da0b3e76 | affected | git | f83519a4c122c9c7a850a2197648a9ff4c67c520 | Unavailable | None listed |
| 8700e3e7c4857d28ebaa824509934556da0b3e76 | affected | git | 9b924f3a26b21330a837cfe72e819b6393bbeeaa | Unavailable | None listed |
| 8700e3e7c4857d28ebaa824509934556da0b3e76 | affected | git | e8ee0e792d475b1067c199ef0af1b6221fa6f43d | Unavailable | None listed |
| 8700e3e7c4857d28ebaa824509934556da0b3e76 | affected | git | 7244491dab347f648e661da96dc0febadd9daec3 | 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) |
|---|---|---|---|---|---|
| 4.8 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.8 | Unavailable | None listed |
| 5.10.258 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.209 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.175 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.140 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.86 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.27 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.4 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |