CVE-2024-56694
Essential information
- Published
- 28/12/2024 10:15
- Modified
- 09/01/2025 16:16
- Author
- —
- Creator
- —
- CVSS
- 5.5 MEDIUM (v3.1)
- CISA KEV
- No
- CWE
- —
- CVSS vector
-
—
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H—
CVSS metrics
- Access vector
- —
- Access complexity
- —
- Authentication
- —
- Confidentiality impact
- —
- Integrity impact
- —
- Availability impact
- —
- Exploitability
- —
- Remediation level
- —
- Report confidence
- —
- Temporal score
- —
- Attack vector
- LOCAL
- Attack complexity
- LOW
- Privileges required
- LOW
- User interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality impact
- NONE
- Integrity impact
- NONE
- Availability impact
- HIGH
- Exploit code maturity
- —
- Remediation level
- —
- Report confidence
- —
- Temporal score
- —
- Attack vector
- —
- Attack complexity
- —
- Attack requirements
- —
- Privileges required
- —
- User interaction
- —
- Confidentiality (V)
- —
- Confidentiality (S)
- —
- Integrity (V)
- —
- Integrity (S)
- —
- Availability (V)
- —
- Availability (S)
- —
- Exploit maturity
- —
Description
In the Linux kernel, the following vulnerability has been resolved:
bpf: fix recursive lock when verdict program return SK_PASS
When the stream_verdict program returns SK_PASS, it places the received skb
into its own receive queue, but a recursive lock eventually occurs, leading
to an operating system deadlock. This issue has been present since v6.9.
'''
sk_psock_strp_data_ready
write_lock_bh(&sk->sk_callback_lock)
strp_data_ready
strp_read_sock
read_sock -> tcp_read_sock
strp_recv
cb.rcv_msg -> sk_psock_strp_read
# now stream_verdict return SK_PASS without peer sock assign
__SK_PASS = sk_psock_map_verd(SK_PASS, NULL)
sk_psock_verdict_apply
sk_psock_skb_ingress_self
sk_psock_skb_ingress_enqueue
sk_psock_data_ready
read_lock_bh(&sk->sk_callback_lock) <= dead lock
'''
This topic has been discussed before, but it has not been fixed.
Previous discussion:
https://lore.kernel.org/all/[email protected]
NVD status
- Status
- Modified — CVE has been recently published to the CVE List and has been received by the NVD.
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- NVD
- View on NVD
Affected products (CPE)
| Product | CPE |
|---|---|
| linux / linux kernel | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux / linux kernel | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux / linux kernel | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux / linux kernel | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux / linux kernel | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux / linux kernel | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |