CVE-2021-47606
published 2024-06-19CVE-2021-47606: In the Linux kernel, the following vulnerability has been resolved: net: netlink: af_netlink: Prevent empty skb by adding a check on len. Adding a check on len…
PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.23%
14.2th percentile
In the Linux kernel, the following vulnerability has been resolved:
net: netlink: af_netlink: Prevent empty skb by adding a check on len.
Adding a check on len parameter to avoid empty skb. This prevents a
division error in netem_enqueue function which is caused when skb->len=0
and skb->data_len=0 in the randomized corruption step as shown below.
skb->data[prandom_u32() % skb_headlen(skb)] ^= 1 f1 48 b8 00 00 00 00 00 fc ff df 49 01 d5 4c 89 e9 48 c1 e9 03
[ 343.241883] RSP: 0018:ffff88800bcd7368 EFLAGS: 00010246
[ 343.242589] RAX: 00000000ba7c0a9c RBX: 0000000000000001 RCX:
0000000000000000
[ 343.243542] RDX: 0000000000000000 RSI: ffff88800f8edb10 RDI:
ffff88800f8eda40
[ 343.244474] RBP: ffff88800bcd7458 R08: 0000000000000000 R09:
ffffffff94fb8445
[ 343.245403] R10: ffffffff94fb8336 R11: ffffffff94fb8445 R12:
0000000000000000
[ 343.246355] R13: ffff88800a5a7000 R14: ffff88800a5b5800 R15:
0000000000000020
[ 343.247291] FS: 00007fdde2bd7700(0000) GS:ffff888109780000(0000)
knlGS:0000000000000000
[ 343.248350] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 343.249120] CR2: 00000000200000c0 CR3: 000000000ef4c000 CR4:
00000000000006e0
[ 343.250076] Call Trace:
[ 343.250423]
[ 343.250713] ? memcpy+0x4d/0x60
[ 343.251162] ? netem_init+0xa0/0xa0 [sch_netem]
[ 343.251795] ? __sanitizer_cov_trace_pc+0x21/0x60
[ 343.252443] netem_enqueue+0xe28/0x33c0 [sch_netem]
[ 343.253102] ? stack_trace_save+0x87/0xb0
[ 343.253655] ? filter_irq_stacks+0xb0/0xb0
[ 343.254220] ? netem_init+0xa0/0xa0 [sch_netem]
[ 343.254837] ? __kasan_check_write+0x14/0x20
[ 343.255418] ? _raw_spin_lock+0x88/0xd6
[ 343.255953] dev_qdisc_enqueue+0x50/0x180
[ 343.256508] __dev_queue_xmit+0x1a7e/0x3090
[ 343.257083] ? netdev_core_pick_tx+0x300/0x300
[ 343.257690] ? check_kcov_mode+0x10/0x40
[ 343.258219] ? _raw_spin_unlock_irqrestore+0x29/0x40
[ 343.258899] ? __kasan_init_slab_obj+0x24/0x30
[ 343.259529] ? setup_object.isra.71+0x23/0x90
[ 343.260121] ? new_slab+0x26e/0x4b0
[ 343.260609] ? kasan_poison+0x3
Affected
23 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.15.15-1 (bookworm) | linux 5.15.15-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= bcbde0d449eda7afa8f63280b165c8300dbd00e2 < c54a60c8fbaa774f828e26df79f66229a8a0e010 | c54a60c8fbaa774f828e26df79f66229a8a0e010 |
| linux | linux | >= bcbde0d449eda7afa8f63280b165c8300dbd00e2 < 40cf2e058832d9cfaae98dfd77334926275598b6 | 40cf2e058832d9cfaae98dfd77334926275598b6 |
| linux | linux | >= bcbde0d449eda7afa8f63280b165c8300dbd00e2 < 54e785f7d5c197bc06dbb8053700df7e2a093ced | 54e785f7d5c197bc06dbb8053700df7e2a093ced |
| linux | linux | >= bcbde0d449eda7afa8f63280b165c8300dbd00e2 < ff3f517bf7138e01a17369042908a3f345c0ee41 | ff3f517bf7138e01a17369042908a3f345c0ee41 |
| linux | linux | >= bcbde0d449eda7afa8f63280b165c8300dbd00e2 < c0315e93552e0d840e9edc6abd71c7db82ec8f51 | c0315e93552e0d840e9edc6abd71c7db82ec8f51 |
| linux | linux | >= bcbde0d449eda7afa8f63280b165c8300dbd00e2 < dadce61247c6230489527cc5e343b6002d1114c5 | dadce61247c6230489527cc5e343b6002d1114c5 |
| linux | linux | >= bcbde0d449eda7afa8f63280b165c8300dbd00e2 < 4c986072a8c9249b9398c7a18f216dc26a9f0e35 | 4c986072a8c9249b9398c7a18f216dc26a9f0e35 |
| linux | linux | >= bcbde0d449eda7afa8f63280b165c8300dbd00e2 < f123cffdd8fe8ea6c7fded4b88516a42798797d0 | f123cffdd8fe8ea6c7fded4b88516a42798797d0 |
| linux | linux_kernel | < 4.4.296 | 4.4.296 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.92-1 | 5.10.92-1 |
| linux | linux_kernel | >= 0 < 5.15.15-1 | 5.15.15-1 |
| linux | linux_kernel | >= 0 < 5.15.15-1 | 5.15.15-1 |
| linux | linux_kernel | >= 0 < 5.15.15-1 | 5.15.15-1 |
| linux | linux_kernel | >= 0 < 4.4.0-266.300 | 4.4.0-266.300 |
| linux | linux_kernel | >= 4.10 < 4.14.259 | 4.14.259 |
| linux | linux_kernel | >= 4.15 < 4.19.222 | 4.19.222 |
| linux | linux_kernel | >= 4.20 < 5.4.167 | 5.4.167 |
| linux | linux_kernel | >= 4.5 < 4.9.294 | 4.9.294 |
| linux | linux_kernel | >= 5.11 < 5.15.10 | 5.15.10 |
| linux | linux_kernel | >= 5.5 < 5.10.87 | 5.10.87 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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OSV
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Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- PowerPC architecture;
- Block layer subsystem;
- GPIO subsystem;
- GPU drivers;
- Media drivers;
- Network drivers;
- SCSI subsystem;
- Direct Digital Synthesis drivers;
- TTY drivers;
- 9P distributed file system;
- JFS file system;
- NILFS2 file system;
- File systems infrastructure;
- BPF subsystem;
- Netfilter;
- Network sockets;
- Memory management;
- Amateur Radio drivers;
- B.A.T.M.A.N. meshing protocol;
- Bluetooth subsystem;
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(
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linux-kvm vulnerabilities
Attila Szász discovered that the HFS+ file system implementation in the
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a specially crafted file system image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2025-0927)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- PowerPC architecture;
- Block layer subsystem;
- GPIO subsystem;
- GPU drivers;
- Media drivers;
- Network drivers;
- SCSI subsystem;
- Direct Digital Synthesis drivers;
- TTY drivers;
- 9P distributed file system;
- JFS file system;
- NILFS2 file system;
- File systems infrastructure
OSV
linux, linux-aws vulnerabilities
osv·2025-03-05·CVSS 7.8
[HIGH] linux, linux-aws vulnerabilities
linux, linux-aws vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- PowerPC architecture;
- Block layer subsystem;
- GPIO subsystem;
- GPU drivers;
- Media drivers;
- Network drivers;
- SCSI subsystem;
- Direct Digital Synthesis drivers;
- TTY drivers;
- 9P distributed file system;
- JFS file system;
- NILFS2 file system;
- File systems infrastructure;
- BPF subsystem;
- Netfilter;
- Network sockets;
- Memory management;
- Amateur Radio drivers;
- B.A.T.M.A.N. meshing protocol;
- Bluetooth subsystem;
- Ethernet bridge;
- Networking core;
- IPv4 networking;
- IPv6 networking;
- Netlink;
- TIPC protocol;
- Wireless networking;
- ALSA framework;
(
GHSA
GHSA-qh5p-hc8x-v67x: In the Linux kernel, the following vulnerability has been resolved:
net: netlink: af_netlink: Prevent empty skb by adding a check on len
ghsa_unreviewed·2024-06-19
CVE-2021-47606 [MEDIUM] CWE-369 GHSA-qh5p-hc8x-v67x: In the Linux kernel, the following vulnerability has been resolved:
net: netlink: af_netlink: Prevent empty skb by adding a check on len
In the Linux kernel, the following vulnerability has been resolved:
net: netlink: af_netlink: Prevent empty skb by adding a check on len.
Adding a check on len parameter to avoid empty skb. This prevents a
division error in netem_enqueue function which is caused when skb->len=0
and skb->data_len=0 in the randomized corruption step as shown below.
skb->data[prandom_u32() % skb_headlen(skb)] ^= 1 f1 48 b8 00 00 00 00 00 fc ff df 49 01 d5 4c 89 e9 48 c1 e9 03
[ 343.241883] RSP: 0018:ffff88800bcd7368 EFLAGS: 00010246
[ 343.242589] RAX: 00000000ba7c0a9c RBX: 0000000000000001 RCX:
0000000000000000
[ 343.243542] RDX: 0000000000000000 RSI: ffff88800f8edb10 RDI:
ffff88800f8eda40
[ 343.244474] RBP: ffff88800bcd7458 R08: 0000000000000000 R09:
ffffffff94fb8445
[ 343.245403] R10: ffffffff94fb8336 R1
OSV
CVE-2021-47606: In the Linux kernel, the following vulnerability has been resolved: net: netlink: af_netlink: Prevent empty skb by adding a check on len
osv·2024-06-19·CVSS 5.5
CVE-2021-47606 [MEDIUM] CVE-2021-47606: In the Linux kernel, the following vulnerability has been resolved: net: netlink: af_netlink: Prevent empty skb by adding a check on len
In the Linux kernel, the following vulnerability has been resolved: net: netlink: af_netlink: Prevent empty skb by adding a check on len. Adding a check on len parameter to avoid empty skb. This prevents a division error in netem_enqueue function which is caused when skb->len=0 and skb->data_len=0 in the randomized corruption step as shown below. skb->data[prandom_u32() % skb_headlen(skb)] ^= 1 f1 48 b8 00 00 00 00 00 fc ff df 49 01 d5 4c 89 e9 48 c1 e9 03 [ 343.241883] RSP: 0018:ffff88800bcd7368 EFLAGS: 00010246 [ 343.242589] RAX: 00000000ba7c0a9c RBX: 0000000000000001 RCX: 0000000000000000 [ 343.243542] RDX: 0000000000000000 RSI: ffff88800f8edb10 RDI: ffff88800f8eda40 [ 343.244474] RBP: ffff88800bcd7458 R08: 0000000000000000 R09: ffffffff94fb8445 [ 343.245403] R10: ffffffff94fb8336 R11:
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-03-13·CVSS 7.8
CVE-2024-43893 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- PowerPC architecture;
- Block layer subsystem;
- GPIO subsystem;
- GPU drivers;
- Media drivers;
- Network drivers;
- SCSI subsystem;
- Direct Digital Synthesis drivers;
- TTY drivers;
- 9P distributed file system;
- JFS file system;
- NILFS2 file system;
- File systems infrastructure;
- BPF subsystem;
- Netfilter;
- Network sockets;
- Memory management;
- Amateur Radio drivers;
- B.A.T.M.A.N. meshing protocol;
- Bluetooth subsystem;
- Ethernet bridge;
- Networking core;
- IPv4 networking;
- IPv6 networking;
-
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-03-11·CVSS 7.8
CVE-2024-41064 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Attila Szász discovered that the HFS+ file system implementation in the
Linux Kernel contained a heap overflow vulnerability. An attacker could use
a specially crafted file system image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2025-0927)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- PowerPC architecture;
- Block layer subsystem;
- GPIO subsystem;
- GPU drivers;
- Media drivers;
- Network drivers;
- SCSI subsystem;
- Direct Digital Synthesis drivers;
- TTY drivers;
- 9P distributed file sy
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-03-05·CVSS 7.8
CVE-2024-40981 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- PowerPC architecture;
- Block layer subsystem;
- GPIO subsystem;
- GPU drivers;
- Media drivers;
- Network drivers;
- SCSI subsystem;
- Direct Digital Synthesis drivers;
- TTY drivers;
- 9P distributed file system;
- JFS file system;
- NILFS2 file system;
- File systems infrastructure;
- BPF subsystem;
- Netfilter;
- Network sockets;
- Memory management;
- Amateur Radio drivers;
- B.A.T.M.A.N. meshing protocol;
- Bluetooth subsystem;
- Ethernet bridge;
- Networking core;
- IPv4 networking;
- IPv6 networking;
-
Red Hat
kernel: net: netlink: af_netlink: Prevent empty skb by adding a check on len.
vendor_redhat·2024-06-19·CVSS 5.5
CVE-2021-47606 [MEDIUM] CWE-369 kernel: net: netlink: af_netlink: Prevent empty skb by adding a check on len.
kernel: net: netlink: af_netlink: Prevent empty skb by adding a check on len.
In the Linux kernel, the following vulnerability has been resolved:
net: netlink: af_netlink: Prevent empty skb by adding a check on len.
Adding a check on len parameter to avoid empty skb. This prevents a
division error in netem_enqueue function which is caused when skb->len=0
and skb->data_len=0 in the randomized corruption step as shown below.
skb->data[prandom_u32() % skb_headlen(skb)] ^= 1 f1 48 b8 00 00 00 00 00 fc ff df 49 01 d5 4c 89 e9 48 c1 e9 03
[ 343.241883] RSP: 0018:ffff88800bcd7368 EFLAGS: 00010246
[ 343.242589] RAX: 00000000ba7c0a9c RBX: 0000000000000001 RCX:
0000000000000000
[ 343.243542] RDX: 0000000000000000 RSI: ffff88800f8edb10 RDI:
ffff88800f8eda40
[ 343.244474] RBP: ffff88800bcd7458 R08: 0
Debian
CVE-2021-47606: linux - In the Linux kernel, the following vulnerability has been resolved: net: netlin...
vendor_debian·2021·CVSS 5.5
CVE-2021-47606 [MEDIUM] CVE-2021-47606: linux - In the Linux kernel, the following vulnerability has been resolved: net: netlin...
In the Linux kernel, the following vulnerability has been resolved: net: netlink: af_netlink: Prevent empty skb by adding a check on len. Adding a check on len parameter to avoid empty skb. This prevents a division error in netem_enqueue function which is caused when skb->len=0 and skb->data_len=0 in the randomized corruption step as shown below. skb->data[prandom_u32() % skb_headlen(skb)] ^= 1 f1 48 b8 00 00 00 00 00 fc ff df 49 01 d5 4c 89 e9 48 c1 e9 03 [ 343.241883] RSP: 0018:ffff88800bcd7368 EFLAGS: 00010246 [ 343.242589] RAX: 00000000ba7c0a9c RBX: 0000000000000001 RCX: 0000000000000000 [ 343.243542] RDX: 0000000000000000 RSI: ffff88800f8edb10 RDI: ffff88800f8eda40 [ 343.244474] RBP: ffff88800bcd7458 R08: 0000000000000000 R09: ffffffff94fb8445 [ 343.245403] R10: ffffffff94fb8336 R11:
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://git.kernel.org/stable/c/40cf2e058832d9cfaae98dfd77334926275598b6https://git.kernel.org/stable/c/4c986072a8c9249b9398c7a18f216dc26a9f0e35https://git.kernel.org/stable/c/54e785f7d5c197bc06dbb8053700df7e2a093cedhttps://git.kernel.org/stable/c/c0315e93552e0d840e9edc6abd71c7db82ec8f51https://git.kernel.org/stable/c/c54a60c8fbaa774f828e26df79f66229a8a0e010https://git.kernel.org/stable/c/dadce61247c6230489527cc5e343b6002d1114c5https://git.kernel.org/stable/c/f123cffdd8fe8ea6c7fded4b88516a42798797d0https://git.kernel.org/stable/c/ff3f517bf7138e01a17369042908a3f345c0ee41https://git.kernel.org/stable/c/40cf2e058832d9cfaae98dfd77334926275598b6https://git.kernel.org/stable/c/4c986072a8c9249b9398c7a18f216dc26a9f0e35https://git.kernel.org/stable/c/54e785f7d5c197bc06dbb8053700df7e2a093cedhttps://git.kernel.org/stable/c/c0315e93552e0d840e9edc6abd71c7db82ec8f51https://git.kernel.org/stable/c/c54a60c8fbaa774f828e26df79f66229a8a0e010https://git.kernel.org/stable/c/dadce61247c6230489527cc5e343b6002d1114c5https://git.kernel.org/stable/c/f123cffdd8fe8ea6c7fded4b88516a42798797d0https://git.kernel.org/stable/c/ff3f517bf7138e01a17369042908a3f345c0ee41
2024-06-19
Published