CVE-2022-50323 — Improper Control of a Resource Through its Lifetime in Linux
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 97.72%
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:
net: do not sense pfmemalloc status in skb_append_pagefrags()
skb_append_pagefrags() is used by af_unix and udp sendpage()
implementation so far.
In commit 326140063946 ("tcp: TX zerocopy should not sense
pfmemalloc status") we explained why we should not sense
pfmemalloc status for pages owned by user space.
We should also use skb_fill_page_desc_noacc()
in skb_append_pagefrags() to avoid following KCSAN report:
BUG: KCSAN:…
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 Packages4 packages
▶CVEListV5linux/linux8527c9a6bf8e54fef0a8d3d7d8874a48c725c915 — 92b4c5c3fa810212da20088bcc6c0a77fc8607bd+4
Patches
🔴Vulnerability Details
2OSV▶
CVE-2022-50323: In the Linux kernel, the following vulnerability has been resolved: net: do not sense pfmemalloc status in skb_append_pagefrags() skb_append_pagefrags↗2025-09-15
GHSA▶
GHSA-3cwp-rh3m-h6g8: In the Linux kernel, the following vulnerability has been resolved:
net: do not sense pfmemalloc status in skb_append_pagefrags()
skb_append_pagefra↗2025-09-15