Description

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

bpf, sockmap: Several fixes to bpf_msg_pop_data

Several fixes to bpf_msg_pop_data,
1. In sk_msg_shift_left, we should put_page
2. if (len == 0), return early is better
3. pop the entire sk_msg (last == msg->sg.size) should be supported
4. Fix for the value of variable "a"
5. In sk_msg_shift_left, after shifting, i has already pointed to the next
element. Addtional sk_msg_iter_var_next may result in BUG.

Classification

CVE ID: CVE-2024-56720

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/d3f5763b3062514a234114e97bbde74d8d702449
https://git.kernel.org/stable/c/d26d977633d1d0b8bf9407278189bd0a8d973323
https://git.kernel.org/stable/c/e1f54c61c4c9a5244eb8159dce60d248f7d97b32
https://git.kernel.org/stable/c/f58d3aa457e77a3d9b3df2ab081dcf9950f6029f
https://git.kernel.org/stable/c/98c7ea7d11f2588e8197db042e0291e4ac8f8346
https://git.kernel.org/stable/c/785180bed9879680d8e5c5e1b54c8ae8d948f4c8
https://git.kernel.org/stable/c/275a9f3ef8fabb0cb282a62b9e164dedba7284c5
https://git.kernel.org/stable/c/5d609ba262475db450ba69b8e8a557bd768ac07a

Timeline