Description
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)
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
2f32b51b609faea1e40bb8c5bd305f1351740936 to < c58d82a1264813e69119c13e9804e2e60b664ad5affected2f32b51b609faea1e40bb8c5bd305f1351740936 to < e53cd3814504b2cadaba4d5a8a07eeea9ddacd03affected2f32b51b609faea1e40bb8c5bd305f1351740936 to < 31f3c6a4dcd3260a386e62cef2d5b36e902600a1affected2f32b51b609faea1e40bb8c5bd305f1351740936 to < ef6d2354de238b065d8799c80da4be9a6af18e39affected2f32b51b609faea1e40bb8c5bd305f1351740936 to < be3884d5cd04ccd58294b83a02d70b7c5fca19d3affected2f32b51b609faea1e40bb8c5bd305f1351740936 to < 85a055c03691e51499123194a14a0c249cf33227affected2f32b51b609faea1e40bb8c5bd305f1351740936 to < e04d59cfe0c0129df7aba7ef7bb17b96be2a64f2affected2f32b51b609faea1e40bb8c5bd305f1351740936 to < 2b253fbc9f7b5db18d716436bdcf8ecef09fd63daffected2f32b51b609faea1e40bb8c5bd305f1351740936 to < 4a388f08d8784af48f352193d2b72aaf167a57a1affected
Linux Linux
Default version status: affected
3.15affected0 to < 3.15unaffected4.9.318 to ≤ 4.9.*unaffected4.14.283 to ≤ 4.14.*unaffected4.19.247 to ≤ 4.19.*unaffected5.4.198 to ≤ 5.4.*unaffected5.10.122 to ≤ 5.10.*unaffected5.15.47 to ≤ 5.15.*unaffected5.17.15 to ≤ 5.17.*unaffected5.18.4 to ≤ 5.18.*unaffected5.19 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/c58d82a1264813e69119c13e9804e2e60b664ad5 ↗
- https://git.kernel.org/stable/c/e53cd3814504b2cadaba4d5a8a07eeea9ddacd03 ↗
- https://git.kernel.org/stable/c/31f3c6a4dcd3260a386e62cef2d5b36e902600a1 ↗
- https://git.kernel.org/stable/c/ef6d2354de238b065d8799c80da4be9a6af18e39 ↗
- https://git.kernel.org/stable/c/be3884d5cd04ccd58294b83a02d70b7c5fca19d3 ↗
- https://git.kernel.org/stable/c/85a055c03691e51499123194a14a0c249cf33227 ↗
- https://git.kernel.org/stable/c/e04d59cfe0c0129df7aba7ef7bb17b96be2a64f2 ↗
- https://git.kernel.org/stable/c/2b253fbc9f7b5db18d716436bdcf8ecef09fd63d ↗
- https://git.kernel.org/stable/c/4a388f08d8784af48f352193d2b72aaf167a57a1 ↗