CVE-2024-26582

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

net: tls: fix use-after-free with partial reads and async decrypt

tls_decrypt_sg doesnt take a reference on the pages from clear_skb, so the put_page() in tls_decrypt_done releases them, and we trigger a use-after-free in process_rx_list when we try to read from the partially-read skb.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Potential Mitigations

References

• https://git.kernel.org/stable/c/20b4ed034872b4d024b26e2bc1092c3f80e5db96
• https://git.kernel.org/stable/c/32b55c5ff9103b8508c1e04bfa5a08c64e7a925f
• https://git.kernel.org/stable/c/754c9bab77a1b895b97bd99d754403c505bc79df
• https://git.kernel.org/stable/c/d684763534b969cca1022e2a28645c7cc91f7fa5
• https://git.kernel.org/stable/c/20b4ed034872b4d024b26e2bc1092c3f80e5db96
• https://git.kernel.org/stable/c/32b55c5ff9103b8508c1e04bfa5a08c64e7a925f
• https://git.kernel.org/stable/c/754c9bab77a1b895b97bd99d754403c505bc79df
• https://git.kernel.org/stable/c/d684763534b969cca1022e2a28645c7cc91f7fa5