CVE-2024-41007

CVE Details

Release Date:2024-07-15

Description


In the Linux kernel, the following vulnerability has been resolved: tcp: avoid too many retransmit packets If a TCP socket is using TCP_USER_TIMEOUT, and the other peer retracted its window to zero, tcp_retransmit_timer() can retransmit a packet every two jiffies (2 ms for HZ=1000), for about 4 minutes after TCP_USER_TIMEOUT has 'expired'. The fix is to make sure tcp_rtx_probe0_timed_out() takes icsk->icsk_user_timeout into account. Before blamed commit, the socket would not timeout after icsk->icsk_user_timeout, but would use standard exponential backoff for the retransmits. Also worth noting that before commit e89688e3e978 ('net: tcp: fix unexcepted socket die when snd_wnd is 0'), the issue would last 2 minutes instead of 4.

See more information about CVE-2024-41007 from MITRE CVE dictionary and NIST NVD


CVSS Scoring


NOTE: The following CVSS v3.1 metrics and score provided are preliminary and subject to review.

Base Score: 5.5 CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector: Local network Attack Complexity: Low
Privileges Required: Low User Interaction: None
Scope: Unchanged Confidentiality Impact: None
Integrity Impact: None Availability Impact: High

Errata information


PlatformErrataRelease Date
Oracle Linux version 7 (kernel-uek)ELSA-2024-126102024-09-10
Oracle Linux version 7 (kernel-uek-container)ELSA-2024-126122024-09-11
Oracle Linux version 8 (kernel)ELSA-2024-70002024-09-24
Oracle Linux version 8 (kernel-uek)ELSA-2024-126102024-09-10
Oracle Linux version 8 (kernel-uek)ELSA-2024-126182024-09-12
Oracle Linux version 8 (kernel-uek-container)ELSA-2024-126122024-09-11
Oracle Linux version 9 (kernel-uek)ELSA-2024-126182024-09-12


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