Tracker / CVE-2022-49345
CVE-2022-49345
In the Linux kernel, the following vulnerability has been resolved: net: xfrm: unexport __init-annotated xfrm4_protocol_init() EXPORT_SYMBOL and __init is a bad combination because the .init.text section is freed up after the initialization. Hence, modules cannot use symbols annotated __init. The access to a freed symbol may end up with kernel panic. modpost used to detect it, but it has been broken for a decade. Recently, I fixed modpost so it started to warn it again, then this showed up in linux-next builds. There are two ways to fix it: - Remove __init - Remove EXPORT_SYMBOL I chose the latter for this case because the only in-tree call-site, net/ipv4/xfrm4_policy.c is never compiled as modular. (CONFIG_XFRM is boolean)
Prodotti e versioni affette
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 3.15 → 4.9.318 |
| linux | linux_kernel · 4.10 → 4.14.283 |
| linux | linux_kernel · 4.15 → 4.19.247 |
| linux | linux_kernel · 4.20 → 5.4.198 |
| linux | linux_kernel · 5.11 → 5.15.47 |
| linux | linux_kernel · 5.16 → 5.17.15 |
| linux | linux_kernel · 5.18 → 5.18.4 |
| linux | linux_kernel · 5.5 → 5.10.122 |