CVSS 5.5 · Medium EPSS 0,28%
Kerentanan Missing Release of Memory after Effective Lifetime pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut NVD.
In the Linux kernel, the following vulnerability has been resolved: net: fix a memleak when uncloning an skb dst and its metadata When uncloning an skb dst and its associated metadata, a new dst+metadata is allocated and later replaces the old one in the skb. This is helpful to have a non-shared dst+metadata attached to a specific skb. The issue is the uncloned dst+metadata is initialized with a refcount of 1, which is increased to 2 before attaching it to the skb. When tun_dst_unclone returns, the dst+metadata is only referenced from a single place (the skb) while its refcount is 2. Its refcount will never drop to 0 (when the skb is consumed), leading to a memory leak. Fix this by removing the call to dst_hold in tun_dst_unclone, as the dst+metadata refcount is already 1.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| linux | linux kernel | Versi 4.3 hingga sebelum 4.9.302 |
| linux | linux kernel | Versi 4.10 hingga sebelum 4.14.267 |
| linux | linux kernel | Versi 4.15 hingga sebelum 4.19.230 |
| linux | linux kernel | Versi 4.20 hingga sebelum 5.4.180 |
| linux | linux kernel | Versi 5.5 hingga sebelum 5.10.101 |
| linux | linux kernel | Versi 5.11 hingga sebelum 5.15.24 |
| linux | linux kernel | Versi 5.16 hingga sebelum 5.16.10 |