CVE-2022-49904
published 2025-05-01CVE-2022-49904: In the Linux kernel, the following vulnerability has been resolved: net, neigh: Fix null-ptr-deref in neigh_table_clear() When IPv6 module gets initialized but…
PriorityP418medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.19%
8.8th percentile
In the Linux kernel, the following vulnerability has been resolved:
net, neigh: Fix null-ptr-deref in neigh_table_clear()
When IPv6 module gets initialized but hits an error in the middle,
kenel panic with:
KASAN: null-ptr-deref in range [0x0000000000000598-0x000000000000059f]
CPU: 1 PID: 361 Comm: insmod
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996)
RIP: 0010:__neigh_ifdown.isra.0+0x24b/0x370
RSP: 0018:ffff888012677908 EFLAGS: 00000202
...
Call Trace:
neigh_table_clear+0x94/0x2d0
ndisc_cleanup+0x27/0x40 [ipv6]
inet6_init+0x21c/0x2cb [ipv6]
do_one_initcall+0xd3/0x4d0
do_init_module+0x1ae/0x670
...
Kernel panic - not syncing: Fatal exception
When ipv6 initialization fails, it will try to cleanup and calls:
neigh_table_clear()
neigh_ifdown(tbl, NULL)
pneigh_queue_purge(&tbl->proxy_queue, dev_net(dev == NULL))
# dev_net(NULL) triggers null-ptr-deref.
Fix it by passing NULL to pneigh_queue_purge() in neigh_ifdown() if dev
is NULL, to make kernel not panic immediately.
Affected
27 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.0.8-1 (bookworm) | linux 6.0.8-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | >= 05fdce1ae744dee43c9181fd063c9c0db4f777f2 < b736592de2aa53aee2d48d6b129bc0c892007bbe | b736592de2aa53aee2d48d6b129bc0c892007bbe |
| linux | linux | >= 4.14.292 < 4.14.299 | 4.14.299 |
| linux | linux | >= 4.19.257 < 4.19.265 | 4.19.265 |
| linux | linux | >= 5.10.141 < 5.10.154 | 5.10.154 |
| linux | linux | >= 5.15.65 < 5.15.78 | 5.15.78 |
| linux | linux | >= 5.19.7 < 5.20 | 5.20 |
| linux | linux | >= 5.4.212 < 5.4.224 | 5.4.224 |
| linux | linux | >= 51be9dd391fd25872b95708a0250f2f7722d2d8e < b49f6b2f21f543d4dc88fb7b1ec2adccb822f27c | b49f6b2f21f543d4dc88fb7b1ec2adccb822f27c |
| linux | linux | >= 66ba215cb51323e4e55e38fd5f250e0fae0cbc94 < a99a8ec4c62180c889482a2ff6465033e0743458 | a99a8ec4c62180c889482a2ff6465033e0743458 |
| linux | linux | >= 66ba215cb51323e4e55e38fd5f250e0fae0cbc94 < f8017317cb0b279b8ab98b0f3901a2e0ac880dad | f8017317cb0b279b8ab98b0f3901a2e0ac880dad |
| linux | linux | >= 9bbaed571c4bf1b62ac8703cb359dc090efc3455 < 0d38b4ca6679e72860ff8730e79bb99d0e9fa3b0 | 0d38b4ca6679e72860ff8730e79bb99d0e9fa3b0 |
| linux | linux | >= c35adafe42bd6c3bf2aca0a3f523dabc38fc23c8 < 1c89642e7f2b7ecc9635610653f5c2f0276c0051 | 1c89642e7f2b7ecc9635610653f5c2f0276c0051 |
| linux | linux | >= db6fa03d80ab076238fc806c9925d1f8b9639d1b < 2b45d6d0c41cb9593868e476681efb1aae5078a1 | 2b45d6d0c41cb9593868e476681efb1aae5078a1 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.158-1 | 5.10.158-1 |
| 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 | >= 0 < 6.0.8-1 | 6.0.8-1 |
| linux | linux_kernel | >= 4.14.292 < 4.14.299 | 4.14.299 |
| linux | linux_kernel | >= 4.19.257 < 4.19.265 | 4.19.265 |
| linux | linux_kernel | >= 5.10.141 < 5.10.154 | 5.10.154 |
| linux | linux_kernel | >= 5.15.65 < 5.15.78 | 5.15.78 |
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: net, neigh: Fix null-ptr-deref in neigh_table_clear()
vendor_redhat·2025-05-01·CVSS 5.5
CVE-2022-49904 [MEDIUM] CWE-476 kernel: net, neigh: Fix null-ptr-deref in neigh_table_clear()
kernel: net, neigh: Fix null-ptr-deref in neigh_table_clear()
In the Linux kernel, the following vulnerability has been resolved:
net, neigh: Fix null-ptr-deref in neigh_table_clear()
When IPv6 module gets initialized but hits an error in the middle,
kenel panic with:
KASAN: null-ptr-deref in range [0x0000000000000598-0x000000000000059f]
CPU: 1 PID: 361 Comm: insmod
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996)
RIP: 0010:__neigh_ifdown.isra.0+0x24b/0x370
RSP: 0018:ffff888012677908 EFLAGS: 00000202
...
Call Trace:
neigh_table_clear+0x94/0x2d0
ndisc_cleanup+0x27/0x40 [ipv6]
inet6_init+0x21c/0x2cb [ipv6]
do_one_initcall+0xd3/0x4d0
do_init_module+0x1ae/0x670
...
Kernel panic - not syncing: Fatal exception
When ipv6 initialization fails, it will try to cleanup and calls:
neigh_table_c
Debian
CVE-2022-49904: linux - In the Linux kernel, the following vulnerability has been resolved: net, neigh:...
vendor_debian·2022·CVSS 5.5
CVE-2022-49904 [MEDIUM] CVE-2022-49904: linux - In the Linux kernel, the following vulnerability has been resolved: net, neigh:...
In the Linux kernel, the following vulnerability has been resolved: net, neigh: Fix null-ptr-deref in neigh_table_clear() When IPv6 module gets initialized but hits an error in the middle, kenel panic with: KASAN: null-ptr-deref in range [0x0000000000000598-0x000000000000059f] CPU: 1 PID: 361 Comm: insmod Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) RIP: 0010:__neigh_ifdown.isra.0+0x24b/0x370 RSP: 0018:ffff888012677908 EFLAGS: 00000202 ... Call Trace: neigh_table_clear+0x94/0x2d0 ndisc_cleanup+0x27/0x40 [ipv6] inet6_init+0x21c/0x2cb [ipv6] do_one_initcall+0xd3/0x4d0 do_init_module+0x1ae/0x670 ... Kernel panic - not syncing: Fatal exception When ipv6 initialization fails, it will try to cleanup and calls: neigh_table_clear() neigh_ifdown(tbl, NULL) pneigh_queue_purge(&tbl->proxy_qu
GHSA
GHSA-cfq2-3x3p-fqxp: In the Linux kernel, the following vulnerability has been resolved:
net, neigh: Fix null-ptr-deref in neigh_table_clear()
When IPv6 module gets init
ghsa_unreviewed·2025-05-01
CVE-2022-49904 [MEDIUM] CWE-476 GHSA-cfq2-3x3p-fqxp: In the Linux kernel, the following vulnerability has been resolved:
net, neigh: Fix null-ptr-deref in neigh_table_clear()
When IPv6 module gets init
In the Linux kernel, the following vulnerability has been resolved:
net, neigh: Fix null-ptr-deref in neigh_table_clear()
When IPv6 module gets initialized but hits an error in the middle,
kenel panic with:
KASAN: null-ptr-deref in range [0x0000000000000598-0x000000000000059f]
CPU: 1 PID: 361 Comm: insmod
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996)
RIP: 0010:__neigh_ifdown.isra.0+0x24b/0x370
RSP: 0018:ffff888012677908 EFLAGS: 00000202
...
Call Trace:
neigh_table_clear+0x94/0x2d0
ndisc_cleanup+0x27/0x40 [ipv6]
inet6_init+0x21c/0x2cb [ipv6]
do_one_initcall+0xd3/0x4d0
do_init_module+0x1ae/0x670
...
Kernel panic - not syncing: Fatal exception
When ipv6 initialization fails, it will try to cleanup and calls:
neigh_table_clear()
neigh_ifdown(tbl, NULL)
pneigh_queue_purge(&tbl->pr
OSV
CVE-2022-49904: In the Linux kernel, the following vulnerability has been resolved: net, neigh: Fix null-ptr-deref in neigh_table_clear() When IPv6 module gets initia
osv·2025-05-01·CVSS 5.5
CVE-2022-49904 [MEDIUM] CVE-2022-49904: In the Linux kernel, the following vulnerability has been resolved: net, neigh: Fix null-ptr-deref in neigh_table_clear() When IPv6 module gets initia
In the Linux kernel, the following vulnerability has been resolved: net, neigh: Fix null-ptr-deref in neigh_table_clear() When IPv6 module gets initialized but hits an error in the middle, kenel panic with: KASAN: null-ptr-deref in range [0x0000000000000598-0x000000000000059f] CPU: 1 PID: 361 Comm: insmod Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) RIP: 0010:__neigh_ifdown.isra.0+0x24b/0x370 RSP: 0018:ffff888012677908 EFLAGS: 00000202 ... Call Trace: neigh_table_clear+0x94/0x2d0 ndisc_cleanup+0x27/0x40 [ipv6] inet6_init+0x21c/0x2cb [ipv6] do_one_initcall+0xd3/0x4d0 do_init_module+0x1ae/0x670 ... Kernel panic - not syncing: Fatal exception When ipv6 initialization fails, it will try to cleanup and calls: neigh_table_clear() neigh_ifdown(tbl, NULL) pneigh_queue_purge(&tbl->proxy_qu
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/0d38b4ca6679e72860ff8730e79bb99d0e9fa3b0https://git.kernel.org/stable/c/1c89642e7f2b7ecc9635610653f5c2f0276c0051https://git.kernel.org/stable/c/2b45d6d0c41cb9593868e476681efb1aae5078a1https://git.kernel.org/stable/c/a99a8ec4c62180c889482a2ff6465033e0743458https://git.kernel.org/stable/c/b49f6b2f21f543d4dc88fb7b1ec2adccb822f27chttps://git.kernel.org/stable/c/b736592de2aa53aee2d48d6b129bc0c892007bbehttps://git.kernel.org/stable/c/f8017317cb0b279b8ab98b0f3901a2e0ac880dad
2025-05-01
Published