Description

In the Linux kernel, the following vulnerability has been resolved:

netfilter: tproxy: bail out if IP has been disabled on the device

syzbot reports:
general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
[..]
RIP: 0010:nf_tproxy_laddr4+0xb7/0x340 net/ipv4/netfilter/nf_tproxy_ipv4.c:62
Call Trace:
nft_tproxy_eval_v4 net/netfilter/nft_tproxy.c:56 [inline]
nft_tproxy_eval+0xa9a/0x1a00 net/netfilter/nft_tproxy.c:168

__in_dev_get_rcu() can return NULL, so check for this.

Classification

CVE ID: CVE-2024-36270

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.04% (probability of being exploited)

EPSS Percentile: 5.08% (scored less or equal to compared to others)

EPSS Date: 2025-02-04 (when was this score calculated)

References

https://git.kernel.org/stable/c/10f0af5234dafd03d2b75233428ec3f11cf7e43d
https://git.kernel.org/stable/c/07eeedafc59c45fe5de43958128542be3784764c
https://git.kernel.org/stable/c/6fe5af4ff06db3d4d80e07a19356640428159f03
https://git.kernel.org/stable/c/caf3a8afb5ea00db6d5398adf148d5534615fd80
https://git.kernel.org/stable/c/570b4c52096e62fda562448f5760fd0ff06110f0
https://git.kernel.org/stable/c/819bfeca16eb9ad647ddcae25e7e12c30612147c
https://git.kernel.org/stable/c/21a673bddc8fd4873c370caf9ae70ffc6d47e8d3

Timeline