CVE-2023-52999
published 2025-03-27CVE-2023-52999: In the Linux kernel, the following vulnerability has been resolved: net: fix UaF in netns ops registration error path If net_assign_generic() fails, the…
PriorityP338high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.23%
14.1th percentile
In the Linux kernel, the following vulnerability has been resolved:
net: fix UaF in netns ops registration error path
If net_assign_generic() fails, the current error path in ops_init() tries
to clear the gen pointer slot. Anyway, in such error path, the gen pointer
itself has not been modified yet, and the existing and accessed one is
smaller than the accessed index, causing an out-of-bounds error:
BUG: KASAN: slab-out-of-bounds in ops_init+0x2de/0x320
Write of size 8 at addr ffff888109124978 by task modprobe/1018
CPU: 2 PID: 1018 Comm: modprobe Not tainted 6.2.0-rc2.mptcp_ae5ac65fbed5+ #1641
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.1-2.fc37 04/01/2014
Call Trace:
dump_stack_lvl+0x6a/0x9f
print_address_description.constprop.0+0x86/0x2b5
print_report+0x11b/0x1fb
kasan_report+0x87/0xc0
ops_init+0x2de/0x320
register_pernet_operations+0x2e4/0x750
register_pernet_subsys+0x24/0x40
tcf_register_action+0x9f/0x560
do_one_initcall+0xf9/0x570
do_init_module+0x190/0x650
load_module+0x1fa5/0x23c0
__do_sys_finit_module+0x10d/0x1b0
do_syscall_64+0x58/0x80
entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f42518f778d
Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48
89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 3d 01 f0 ff
ff 73 01 c3 48 8b 0d cb 56 2c 00 f7 d8 64 89 01 48
RSP: 002b:00007fff96869688 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
RAX: ffffffffffffffda RBX: 00005568ef7f7c90 RCX: 00007f42518f778d
RDX: 0000000000000000 RSI: 00005568ef41d796 RDI: 0000000000000003
RBP: 00005568ef41d796 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000
R13: 00005568ef7f7d30 R14: 0000000000040000 R15: 0000000000000000
This change addresses the issue by skipping the gen pointer
de-reference in the mentioned error-path.
Found by code inspection and verified with explicit error injection
on a kasan-enabled kernel.
Affected
26 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.11-1 (bookworm) | linux 6.1.11-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | >= 4.19.264 < 4.19.272 | 4.19.272 |
| linux | linux | >= 5.10.153 < 5.10.166 | 5.10.166 |
| linux | linux | >= 5.15.77 < 5.15.91 | 5.15.91 |
| linux | linux | >= 5.4.223 < 5.4.231 | 5.4.231 |
| linux | linux | >= 5a2ea549be94924364f6911227d99be86e8cf34a < ad0dfe9bcf0d78e699c7efb64c90ed062dc48bea | ad0dfe9bcf0d78e699c7efb64c90ed062dc48bea |
| linux | linux | >= 6.0.7 < 6.1 | 6.1 |
| linux | linux | >= 97ad240fd9aa9214497d14af2b91608e20856cac < ddd49cbbd4c1ceb38032018b589b44208e54f55e | ddd49cbbd4c1ceb38032018b589b44208e54f55e |
| linux | linux | >= a1e18acb0246bfb001b08b8b1b830b5ec92a0f13 < 66689a72ba73575e76d4f6a8748d3fa2690ec1c4 | 66689a72ba73575e76d4f6a8748d3fa2690ec1c4 |
| linux | linux | >= c3edc6e808209aa705185f732e682a370981ced1 < d4c008f3b7f7d4ffd311eb2dae5e75b3cbddacd0 | d4c008f3b7f7d4ffd311eb2dae5e75b3cbddacd0 |
| linux | linux | >= d266935ac43d57586e311a087510fe6a084af742 < 12075708f2e77ee6a9f8bb2cf512c38be3099794 | 12075708f2e77ee6a9f8bb2cf512c38be3099794 |
| linux | linux | >= d266935ac43d57586e311a087510fe6a084af742 < 71ab9c3e2253619136c31c89dbb2c69305cc89b1 | 71ab9c3e2253619136c31c89dbb2c69305cc89b1 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.178-1 | 5.10.178-1 |
| linux | linux_kernel | >= 0 < 6.1.11-1 | 6.1.11-1 |
| linux | linux_kernel | >= 0 < 6.1.11-1 | 6.1.11-1 |
| linux | linux_kernel | >= 0 < 6.1.11-1 | 6.1.11-1 |
| linux | linux_kernel | >= 4.19.264 < 4.19.272 | 4.19.272 |
| linux | linux_kernel | >= 5.10.153 < 5.10.166 | 5.10.166 |
| linux | linux_kernel | >= 5.15.77 < 5.15.91 | 5.15.91 |
| linux | linux_kernel | >= 5.4.223 < 5.4.231 | 5.4.231 |
| linux | linux_kernel | >= 6.1 < 6.1.9 | 6.1.9 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
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Red Hat
kernel: net: fix UaF in netns ops registration error path
vendor_redhat·2025-03-27·CVSS 7.8
CVE-2023-52999 [HIGH] kernel: net: fix UaF in netns ops registration error path
kernel: net: fix UaF in netns ops registration error path
In the Linux kernel, the following vulnerability has been resolved:
net: fix UaF in netns ops registration error path
If net_assign_generic() fails, the current error path in ops_init() tries
to clear the gen pointer slot. Anyway, in such error path, the gen pointer
itself has not been modified yet, and the existing and accessed one is
smaller than the accessed index, causing an out-of-bounds error:
BUG: KASAN: slab-out-of-bounds in ops_init+0x2de/0x320
Write of size 8 at addr ffff888109124978 by task modprobe/1018
CPU: 2 PID: 1018 Comm: modprobe Not tainted 6.2.0-rc2.mptcp_ae5ac65fbed5+ #1641
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.1-2.fc37 04/01/2014
Call Trace:
dump_stack_lvl+0x6a/0x9f
print_address_descri
Debian
CVE-2023-52999: linux - In the Linux kernel, the following vulnerability has been resolved: net: fix Ua...
vendor_debian·2023·CVSS 7.8
CVE-2023-52999 [HIGH] CVE-2023-52999: linux - In the Linux kernel, the following vulnerability has been resolved: net: fix Ua...
In the Linux kernel, the following vulnerability has been resolved: net: fix UaF in netns ops registration error path If net_assign_generic() fails, the current error path in ops_init() tries to clear the gen pointer slot. Anyway, in such error path, the gen pointer itself has not been modified yet, and the existing and accessed one is smaller than the accessed index, causing an out-of-bounds error: BUG: KASAN: slab-out-of-bounds in ops_init+0x2de/0x320 Write of size 8 at addr ffff888109124978 by task modprobe/1018 CPU: 2 PID: 1018 Comm: modprobe Not tainted 6.2.0-rc2.mptcp_ae5ac65fbed5+ #1641 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.1-2.fc37 04/01/2014 Call Trace: dump_stack_lvl+0x6a/0x9f print_address_description.constprop.0+0x86/0x2b5 print_report+0x11b/0x1fb kasan_
GHSA
GHSA-x444-83wh-35rx: In the Linux kernel, the following vulnerability has been resolved:
net: fix UaF in netns ops registration error path
If net_assign_generic() fails,
ghsa_unreviewed·2025-03-27
CVE-2023-52999 [HIGH] CWE-416 GHSA-x444-83wh-35rx: In the Linux kernel, the following vulnerability has been resolved:
net: fix UaF in netns ops registration error path
If net_assign_generic() fails,
In the Linux kernel, the following vulnerability has been resolved:
net: fix UaF in netns ops registration error path
If net_assign_generic() fails, the current error path in ops_init() tries
to clear the gen pointer slot. Anyway, in such error path, the gen pointer
itself has not been modified yet, and the existing and accessed one is
smaller than the accessed index, causing an out-of-bounds error:
BUG: KASAN: slab-out-of-bounds in ops_init+0x2de/0x320
Write of size 8 at addr ffff888109124978 by task modprobe/1018
CPU: 2 PID: 1018 Comm: modprobe Not tainted 6.2.0-rc2.mptcp_ae5ac65fbed5+ #1641
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.1-2.fc37 04/01/2014
Call Trace:
dump_stack_lvl+0x6a/0x9f
print_address_description.constprop.0+0x86/0x2b5
print_report+0x11b/0x1fb
k
OSV
CVE-2023-52999: In the Linux kernel, the following vulnerability has been resolved: net: fix UaF in netns ops registration error path If net_assign_generic() fails, t
osv·2025-03-27·CVSS 7.8
CVE-2023-52999 [HIGH] CVE-2023-52999: In the Linux kernel, the following vulnerability has been resolved: net: fix UaF in netns ops registration error path If net_assign_generic() fails, t
In the Linux kernel, the following vulnerability has been resolved: net: fix UaF in netns ops registration error path If net_assign_generic() fails, the current error path in ops_init() tries to clear the gen pointer slot. Anyway, in such error path, the gen pointer itself has not been modified yet, and the existing and accessed one is smaller than the accessed index, causing an out-of-bounds error: BUG: KASAN: slab-out-of-bounds in ops_init+0x2de/0x320 Write of size 8 at addr ffff888109124978 by task modprobe/1018 CPU: 2 PID: 1018 Comm: modprobe Not tainted 6.2.0-rc2.mptcp_ae5ac65fbed5+ #1641 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.1-2.fc37 04/01/2014 Call Trace: dump_stack_lvl+0x6a/0x9f print_address_description.constprop.0+0x86/0x2b5 print_report+0x11b/0x1fb kasan_
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://git.kernel.org/stable/c/12075708f2e77ee6a9f8bb2cf512c38be3099794https://git.kernel.org/stable/c/66689a72ba73575e76d4f6a8748d3fa2690ec1c4https://git.kernel.org/stable/c/71ab9c3e2253619136c31c89dbb2c69305cc89b1https://git.kernel.org/stable/c/ad0dfe9bcf0d78e699c7efb64c90ed062dc48beahttps://git.kernel.org/stable/c/d4c008f3b7f7d4ffd311eb2dae5e75b3cbddacd0https://git.kernel.org/stable/c/ddd49cbbd4c1ceb38032018b589b44208e54f55e
2025-03-27
Published