CVE-2021-47001
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2021
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
xprtrdma: Fix cwnd update ordering
In the Linux kernel, the following vulnerability has been resolved: xprtrdma: Fix cwnd update ordering After a reconnect, the reply handler is opening the cwnd (and thus enabling more RPC Calls to be sent) /before/ rpcrdma_post_recvs() can post enough Receive WRs to receive their replies. This causes an RNR and the new connection is lost immediately. The race is most clearly exposed when KASAN and disconnect injection are enabled. This slows down rpcrdma_rep_create() enough to allow the send side to post a bunch of RPC Calls before the Receive completion handler can invoke ib_post_recv().
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) |
|---|---|---|---|---|---|
| 2ae50ad68cd79224198b525f7bd645c9da98b6ff | affected | git | eddae8be7944096419c2ae29477a45f767d0fcd4 | Unavailable | None listed |
| 2ae50ad68cd79224198b525f7bd645c9da98b6ff | affected | git | 8834ecb5df22b7ff3c9b0deba7726579bb613f95 | Unavailable | None listed |
| 2ae50ad68cd79224198b525f7bd645c9da98b6ff | affected | git | 19b5fa9489b5706bc878c3a522a7f771079e2fa0 | Unavailable | None listed |
| 2ae50ad68cd79224198b525f7bd645c9da98b6ff | affected | git | 35d8b10a25884050bb3b0149b62c3818ec59f77c | Unavailable | None listed |
| 3791c5982ba1eebf2900ee7ca7b9a89619c26d54 | affected | git | Unavailable | Unavailable | None listed |
| 5.4.13 | affected | semver | 5.5 | 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) |
|---|---|---|---|---|---|
| 5.5 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.5 | Unavailable | None listed |
| 5.10.38 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.11.22 | unaffected | semver | Unavailable | 5.11.* | None listed |
| 5.12.5 | unaffected | semver | Unavailable | 5.12.* | None listed |
| 5.13 | unaffected | original_commit_for_fix | Unavailable | * | None listed |