CVE-2023-53240 — NULL Pointer Dereference in Linux
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 95.60%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedSep 15
Description
In the Linux kernel, the following vulnerability has been resolved:
xsk: check IFF_UP earlier in Tx path
Xsk Tx can be triggered via either sendmsg() or poll() syscalls. These
two paths share a call to common function xsk_xmit() which has two
sanity checks within. A pseudo code example to show the two paths:
__xsk_sendmsg() : xsk_poll():
if (unlikely(!xsk_is_bound(xs))) if (unlikely(!xsk_is_bound(xs)))
return -ENXIO; return mask;
if (unlikely(need_wait)) (...)
return -EOPNOTSUPP; xsk_xmit()
m…
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6
Affected Packages7 packages
Patches
🔴Vulnerability Details
2GHSA▶
GHSA-5qr9-cjj5-7m79: In the Linux kernel, the following vulnerability has been resolved:
xsk: check IFF_UP earlier in Tx path
Xsk Tx can be triggered via either sendmsg(↗2025-09-15
OSV▶
CVE-2023-53240: In the Linux kernel, the following vulnerability has been resolved: xsk: check IFF_UP earlier in Tx path Xsk Tx can be triggered via either sendmsg()↗2025-09-15