CVE-2021-47024
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)
vsock/virtio: free queued packets when closing socket
In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: free queued packets when closing socket As reported by syzbot [1], there is a memory leak while closing the socket. We partially solved this issue with commit ac03046ece2b ("vsock/virtio: free packets during the socket release"), but we forgot to drain the RX queue when the socket is definitely closed by the scheduled work. To avoid future issues, let's use the new virtio_transport_remove_sock() to drain the RX queue before removing the socket from the af_vsock lists calling vsock_remove_sock(). [1] https://syzkaller.appspot.com/bug?extid=24452624fc4c571eedd9
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) |
|---|---|---|---|---|---|
| ac03046ece2b158ebd204dfc4896fd9f39f0e6c8 | affected | git | b605673b523fe33abeafb2136759bcbc9c1e6ebf | Unavailable | None listed |
| ac03046ece2b158ebd204dfc4896fd9f39f0e6c8 | affected | git | 27691665145e74a45034a9dccf1150cf1894763a | Unavailable | None listed |
| ac03046ece2b158ebd204dfc4896fd9f39f0e6c8 | affected | git | 37c38674ef2f8d7e8629e5d433c37d6c1273d16b | Unavailable | None listed |
| ac03046ece2b158ebd204dfc4896fd9f39f0e6c8 | affected | git | 8432b8114957235f42e070a16118a7f750de9d39 | Unavailable | None listed |
| 4ea082cd3c400cd5bb36a7beb7e441bf3e29350d | affected | git | Unavailable | Unavailable | None listed |
| 4e539fa2dec4db3405e47002f2878aa4a99eb68b | affected | git | Unavailable | Unavailable | None listed |
| 4af8a327aeba102aaa9b78f3451f725bc590b237 | affected | git | Unavailable | Unavailable | None listed |
| 51adb8ebe8c1d80528fc2ea863cfea9d32d2c52b | affected | git | Unavailable | Unavailable | None listed |
| 7d29c9ad0ed525c1b10e29cfca4fb1eece1e93fb | affected | git | Unavailable | Unavailable | None listed |
| 4.9.179 | affected | semver | 4.10 | Unavailable | None listed |
| 4.14.122 | affected | semver | 4.15 | Unavailable | None listed |
| 4.19.46 | affected | semver | 4.20 | Unavailable | None listed |
| 5.0.19 | affected | semver | 5.1 | Unavailable | None listed |
| 5.1.5 | affected | semver | 5.2 | 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) |
|---|---|---|---|---|---|
| 5.2 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.2 | Unavailable | None listed |
| 5.10.37 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.11.21 | unaffected | semver | Unavailable | 5.11.* | None listed |
| 5.12.4 | unaffected | semver | Unavailable | 5.12.* | None listed |
| 5.13 | unaffected | original_commit_for_fix | Unavailable | * | None listed |