CVE-2022-49911
published 2025-05-01CVE-2022-49911: In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: enforce documented limit to prevent allocating huge memory Daniel Xu…
PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.17%
7.0th percentile
In the Linux kernel, the following vulnerability has been resolved:
netfilter: ipset: enforce documented limit to prevent allocating huge memory
Daniel Xu reported that the hash:net,iface type of the ipset subsystem does
not limit adding the same network with different interfaces to a set, which
can lead to huge memory usage or allocation failure.
The quick reproducer is
$ ipset create ACL.IN.ALL_PERMIT hash:net,iface hashsize 1048576 timeout 0
$ for i in $(seq 0 100); do /sbin/ipset add ACL.IN.ALL_PERMIT 0.0.0.0/0,kaf_$i timeout 0 -exist; done
The backtrace when vmalloc fails:
[Tue Oct 25 00:13:08 2022] ipset: vmalloc error: size 1073741848, exceeds total pages
[Tue Oct 25 00:13:08 2022] Call Trace:
[Tue Oct 25 00:13:08 2022]
[Tue Oct 25 00:13:08 2022] dump_stack_lvl+0x48/0x60
[Tue Oct 25 00:13:08 2022] warn_alloc+0x155/0x180
[Tue Oct 25 00:13:08 2022] __vmalloc_node_range+0x72a/0x760
[Tue Oct 25 00:13:08 2022] ? hash_netiface4_add+0x7c0/0xb20
[Tue Oct 25 00:13:08 2022] ? __kmalloc_large_node+0x4a/0x90
[Tue Oct 25 00:13:08 2022] kvmalloc_node+0xa6/0xd0
[Tue Oct 25 00:13:08 2022] ? hash_netiface4_resize+0x99/0x710
The fix is to enforce the limit documented in the ipset(8) manpage:
> The internal restriction of the hash:net,iface set type is that the same
> network prefix cannot be stored with more than 64 different interfaces
> in a single set.
Affected
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.0.8-1 (bookworm) | linux 6.0.8-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= ccf0a4b7fc688561428290265e4effde41446668 < 42d20d5e24575c9afa2d66d9a51e7386db9514f5 | 42d20d5e24575c9afa2d66d9a51e7386db9514f5 |
| linux | linux | >= ccf0a4b7fc688561428290265e4effde41446668 < a37ef32fe5956fe9248df68f6a61997845ba047e | a37ef32fe5956fe9248df68f6a61997845ba047e |
| linux | linux | >= ccf0a4b7fc688561428290265e4effde41446668 < 510841da1fcc16f702440ab58ef0b4d82a9056b7 | 510841da1fcc16f702440ab58ef0b4d82a9056b7 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 6.0.8-1 | 6.0.8-1 |
| linux | linux_kernel | >= 0 < 6.0.8-1 | 6.0.8-1 |
| linux | linux_kernel | >= 0 < 6.0.8-1 | 6.0.8-1 |
| linux | linux_kernel | >= 5.11 < 5.15.78 | 5.15.78 |
| linux | linux_kernel | >= 5.16 < 6.0.8 | 6.0.8 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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Red Hat
kernel: netfilter: ipset: enforce documented limit to prevent allocating huge memory
vendor_redhat·2025-05-01·CVSS 5.5
CVE-2022-49911 [MEDIUM] kernel: netfilter: ipset: enforce documented limit to prevent allocating huge memory
kernel: netfilter: ipset: enforce documented limit to prevent allocating huge memory
In the Linux kernel, the following vulnerability has been resolved:
netfilter: ipset: enforce documented limit to prevent allocating huge memory
Daniel Xu reported that the hash:net,iface type of the ipset subsystem does
not limit adding the same network with different interfaces to a set, which
can lead to huge memory usage or allocation failure.
The quick reproducer is
$ ipset create ACL.IN.ALL_PERMIT hash:net,iface hashsize 1048576 timeout 0
$ for i in $(seq 0 100); do /sbin/ipset add ACL.IN.ALL_PERMIT 0.0.0.0/0,kaf_$i timeout 0 -exist; done
The backtrace when vmalloc fails:
[Tue Oct 25 00:13:08 2022] ipset: vmalloc error: size 1073741848, exceeds total pages
[Tue Oct 25 00:13:08 2022] Call Trace:
[Tu
Debian
CVE-2022-49911: linux - In the Linux kernel, the following vulnerability has been resolved: netfilter: ...
vendor_debian·2022·CVSS 5.5
CVE-2022-49911 [MEDIUM] CVE-2022-49911: linux - In the Linux kernel, the following vulnerability has been resolved: netfilter: ...
In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: enforce documented limit to prevent allocating huge memory Daniel Xu reported that the hash:net,iface type of the ipset subsystem does not limit adding the same network with different interfaces to a set, which can lead to huge memory usage or allocation failure. The quick reproducer is $ ipset create ACL.IN.ALL_PERMIT hash:net,iface hashsize 1048576 timeout 0 $ for i in $(seq 0 100); do /sbin/ipset add ACL.IN.ALL_PERMIT 0.0.0.0/0,kaf_$i timeout 0 -exist; done The backtrace when vmalloc fails: [Tue Oct 25 00:13:08 2022] ipset: vmalloc error: size 1073741848, exceeds total pages [Tue Oct 25 00:13:08 2022] Call Trace: [Tue Oct 25 00:13:08 2022] [Tue Oct 25 00:13:08 2022] dump_stack_lvl+0x48/0x60 [Tue Oct 25
GHSA
GHSA-wx74-4w24-9hwf: In the Linux kernel, the following vulnerability has been resolved:
netfilter: ipset: enforce documented limit to prevent allocating huge memory
Dan
ghsa_unreviewed·2025-05-01
CVE-2022-49911 [MEDIUM] GHSA-wx74-4w24-9hwf: In the Linux kernel, the following vulnerability has been resolved:
netfilter: ipset: enforce documented limit to prevent allocating huge memory
Dan
In the Linux kernel, the following vulnerability has been resolved:
netfilter: ipset: enforce documented limit to prevent allocating huge memory
Daniel Xu reported that the hash:net,iface type of the ipset subsystem does
not limit adding the same network with different interfaces to a set, which
can lead to huge memory usage or allocation failure.
The quick reproducer is
$ ipset create ACL.IN.ALL_PERMIT hash:net,iface hashsize 1048576 timeout 0
$ for i in $(seq 0 100); do /sbin/ipset add ACL.IN.ALL_PERMIT 0.0.0.0/0,kaf_$i timeout 0 -exist; done
The backtrace when vmalloc fails:
[Tue Oct 25 00:13:08 2022] ipset: vmalloc error: size 1073741848, exceeds total pages
[Tue Oct 25 00:13:08 2022] Call Trace:
[Tue Oct 25 00:13:08 2022]
[Tue Oct 25 00:13:08 2022] dump_stack_lvl+0x48/0x60
[Tue
OSV
CVE-2022-49911: In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: enforce documented limit to prevent allocating huge memory Danie
osv·2025-05-01·CVSS 5.5
CVE-2022-49911 [MEDIUM] CVE-2022-49911: In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: enforce documented limit to prevent allocating huge memory Danie
In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: enforce documented limit to prevent allocating huge memory Daniel Xu reported that the hash:net,iface type of the ipset subsystem does not limit adding the same network with different interfaces to a set, which can lead to huge memory usage or allocation failure. The quick reproducer is $ ipset create ACL.IN.ALL_PERMIT hash:net,iface hashsize 1048576 timeout 0 $ for i in $(seq 0 100); do /sbin/ipset add ACL.IN.ALL_PERMIT 0.0.0.0/0,kaf_$i timeout 0 -exist; done The backtrace when vmalloc fails: [Tue Oct 25 00:13:08 2022] ipset: vmalloc error: size 1073741848, exceeds total pages [Tue Oct 25 00:13:08 2022] Call Trace: [Tue Oct 25 00:13:08 2022] [Tue Oct 25 00:13:08 2022] dump_stack_lvl+0x48/0x60 [Tue Oct 25
No detection rules found.
No public exploits indexed.
2025-05-01
Published