CVE-2024-53211
published 2024-12-27CVE-2024-53211: In the Linux kernel, the following vulnerability has been resolved: net/l2tp: fix warning in l2tp_exit_net found by syzbot In l2tp's net exit handler, we check…
PriorityP418medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.19%
8.4th percentile
In the Linux kernel, the following vulnerability has been resolved:
net/l2tp: fix warning in l2tp_exit_net found by syzbot
In l2tp's net exit handler, we check that an IDR is empty before
destroying it:
WARN_ON_ONCE(!idr_is_empty(&pn->l2tp_tunnel_idr));
idr_destroy(&pn->l2tp_tunnel_idr);
By forcing memory allocation failures in idr_alloc_32, syzbot is able
to provoke a condition where idr_is_empty returns false despite there
being no items in the IDR. This turns out to be because the radix tree
of the IDR contains only internal radix-tree nodes and it is this that
causes idr_is_empty to return false. The internal nodes are cleaned by
idr_destroy.
Use idr_for_each to check that the IDR is empty instead of
idr_is_empty to avoid the problem.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.12.3-1 (forky) | linux 6.12.3-1 (forky) |
| linux | linux | — | — |
| linux | linux | >= 73d33bd063c4cfef3db17f9bec3d202928ed8631 < a487cc8986d6dd75b60b59004f3bd2ea9b4dd541 | a487cc8986d6dd75b60b59004f3bd2ea9b4dd541 |
| linux | linux | >= 73d33bd063c4cfef3db17f9bec3d202928ed8631 < 5d066766c5f1252f98ff859265bcd1a5b52ac46c | 5d066766c5f1252f98ff859265bcd1a5b52ac46c |
| linux | linux_kernel | >= 0 < 6.12.3-1 | 6.12.3-1 |
| linux | linux_kernel | >= 0 < 6.12.3-1 | 6.12.3-1 |
| linux | linux_kernel | >= 6.12 < 6.12.2 | 6.12.2 |
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_debian5.5LOW
vendor_redhat5.5MEDIUM
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Red Hat
kernel: net/l2tp: fix warning in l2tp_exit_net found by syzbot
vendor_redhat·2024-12-27·CVSS 5.5
CVE-2024-53211 [MEDIUM] kernel: net/l2tp: fix warning in l2tp_exit_net found by syzbot
kernel: net/l2tp: fix warning in l2tp_exit_net found by syzbot
In the Linux kernel, the following vulnerability has been resolved:
net/l2tp: fix warning in l2tp_exit_net found by syzbot
In l2tp's net exit handler, we check that an IDR is empty before
destroying it:
WARN_ON_ONCE(!idr_is_empty(&pn->l2tp_tunnel_idr));
idr_destroy(&pn->l2tp_tunnel_idr);
By forcing memory allocation failures in idr_alloc_32, syzbot is able
to provoke a condition where idr_is_empty returns false despite there
being no items in the IDR. This turns out to be because the radix tree
of the IDR contains only internal radix-tree nodes and it is this that
causes idr_is_empty to return false. The internal nodes are cleaned by
idr_destroy.
Use idr_for_each to check that the IDR is empty instead of
idr_is_empty to avoid
Debian
CVE-2024-53211: linux - In the Linux kernel, the following vulnerability has been resolved: net/l2tp: f...
vendor_debian·2024·CVSS 5.5
CVE-2024-53211 [MEDIUM] CVE-2024-53211: linux - In the Linux kernel, the following vulnerability has been resolved: net/l2tp: f...
In the Linux kernel, the following vulnerability has been resolved: net/l2tp: fix warning in l2tp_exit_net found by syzbot In l2tp's net exit handler, we check that an IDR is empty before destroying it: WARN_ON_ONCE(!idr_is_empty(&pn->l2tp_tunnel_idr)); idr_destroy(&pn->l2tp_tunnel_idr); By forcing memory allocation failures in idr_alloc_32, syzbot is able to provoke a condition where idr_is_empty returns false despite there being no items in the IDR. This turns out to be because the radix tree of the IDR contains only internal radix-tree nodes and it is this that causes idr_is_empty to return false. The internal nodes are cleaned by idr_destroy. Use idr_for_each to check that the IDR is empty instead of idr_is_empty to avoid the problem.
Scope: local
bookworm: resolved
bullseye: resolved
GHSA
GHSA-f4g2-c45m-rq74: In the Linux kernel, the following vulnerability has been resolved:
net/l2tp: fix warning in l2tp_exit_net found by syzbot
In l2tp's net exit handle
ghsa_unreviewed·2024-12-27
CVE-2024-53211 [MEDIUM] GHSA-f4g2-c45m-rq74: In the Linux kernel, the following vulnerability has been resolved:
net/l2tp: fix warning in l2tp_exit_net found by syzbot
In l2tp's net exit handle
In the Linux kernel, the following vulnerability has been resolved:
net/l2tp: fix warning in l2tp_exit_net found by syzbot
In l2tp's net exit handler, we check that an IDR is empty before
destroying it:
WARN_ON_ONCE(!idr_is_empty(&pn->l2tp_tunnel_idr));
idr_destroy(&pn->l2tp_tunnel_idr);
By forcing memory allocation failures in idr_alloc_32, syzbot is able
to provoke a condition where idr_is_empty returns false despite there
being no items in the IDR. This turns out to be because the radix tree
of the IDR contains only internal radix-tree nodes and it is this that
causes idr_is_empty to return false. The internal nodes are cleaned by
idr_destroy.
Use idr_for_each to check that the IDR is empty instead of
idr_is_empty to avoid the problem.
OSV
CVE-2024-53211: In the Linux kernel, the following vulnerability has been resolved: net/l2tp: fix warning in l2tp_exit_net found by syzbot In l2tp's net exit handler,
osv·2024-12-27·CVSS 5.5
CVE-2024-53211 [MEDIUM] CVE-2024-53211: In the Linux kernel, the following vulnerability has been resolved: net/l2tp: fix warning in l2tp_exit_net found by syzbot In l2tp's net exit handler,
In the Linux kernel, the following vulnerability has been resolved: net/l2tp: fix warning in l2tp_exit_net found by syzbot In l2tp's net exit handler, we check that an IDR is empty before destroying it: WARN_ON_ONCE(!idr_is_empty(&pn->l2tp_tunnel_idr)); idr_destroy(&pn->l2tp_tunnel_idr); By forcing memory allocation failures in idr_alloc_32, syzbot is able to provoke a condition where idr_is_empty returns false despite there being no items in the IDR. This turns out to be because the radix tree of the IDR contains only internal radix-tree nodes and it is this that causes idr_is_empty to return false. The internal nodes are cleaned by idr_destroy. Use idr_for_each to check that the IDR is empty instead of idr_is_empty to avoid the problem.
No detection rules found.
No public exploits indexed.
2024-12-27
Published