In the Linux kernel, the following vulnerability has been resolved:
tcp: take care of mixed splice()/sendmsg(MSG_ZEROCOPY) case
syzbot found that mixing sendpage() and sendmsg(MSG_ZEROCOPY)
calls over the same TCP socket would again trigger the
infamous warning in inet_sock_destruct()
WARN_ON(sk_forward_alloc_get(sk));
While Talal took into account a mix of regular copied data
and MSG_ZEROCOPY one in the same skb, the sendpage() path
has been forgotten.
We want the charging to happen for sendpage(), because
pages could be coming from a pipe. What is missing is the
downgrading of pure zerocopy status to make sure
sk_forward_alloc will stay synced.
Add tcp_downgrade_zcopy_pure() helper so that we can
use it from the two callers.
References
Configurations
Configuration 1 (hide)
|
History
07 Oct 2025, 19:53
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Linux
Linux linux Kernel |
|
| References | () https://git.kernel.org/stable/c/47f3860c4931175f112f28dcac66eacca9b1040f - Patch | |
| References | () https://git.kernel.org/stable/c/f8d9d938514f46c4892aff6bfe32f425e84d81cc - Patch | |
| CPE | cpe:2.3:o:linux:linux_kernel:5.17:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| CWE | NVD-CWE-noinfo |
Information
Published : 2024-07-16 12:15
Updated : 2025-10-07 19:53
NVD link : CVE-2022-48819
Mitre link : CVE-2022-48819
CVE.ORG link : CVE-2022-48819
JSON object : View
Products Affected
linux
- linux_kernel
CWE