CVE-2025-37757

tipc: fix memory leak in tipc_link_xmit

MEDIUM
5.5
CVSS Score
Published: May 1, 2025 at 12:56 PM UTC
Updated: October 15, 2026 at 10:18 PM UTC
2 products affected across 2 vendorsLinux KernelDebian Linux

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM5.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: tipc: fix memory leak in tipc_link_xmit In case the backlog transmit queue for system-importance messages is overloaded, tipc_link_xmit() returns -ENOBUFS but the skb list is not purged. This leads to memory leak and failure when a skb is allocated. This commit fixes this issue by purging the skb list before tipc_link_xmit() returns.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.11 ≤ v < 5.4.2935.11 ≤ v < 5.15.1815.16 ≤ v < 6.1.1355.5 ≤ v < 5.10.2376.13 ≤ v < 6.13.126.14 ≤ v < 6.14.36.2 ≤ v < 6.6.886.7 ≤ v < 6.12.24365ad353c2564bba8835290061308ba825166b3a6.156.15 rc1
Vendor states this is fixed in 09c2dcda2c551bba30710c33f6ac678ae7395389 (fixed)
Vendor states this is fixed in 24e6280cdd7f8d01fc6b9b365fb800c2fb7ea9bb (fixed)
Vendor states this is fixed in 69ae94725f4fc9e75219d2d69022029c5b24bc9a (fixed)
Vendor states this is fixed in 7c5957f7905b4aede9d7a559d271438f3ca9e852 (fixed)
Vendor states this is fixed in 84895f5ce3829d9fc030e5ec2d8729da4c0c9d08 (fixed)
Vendor states this is fixed in a40cbfbb8f95c325430f017883da669b2aa927d4 (fixed)
Vendor states this is fixed in d0e02d3d27a0b4dcb13f954f537ca1dd8f282dcf (fixed)
Vendor states this is fixed in d4d40e437adb376be16b3a12dd5c63f0fa768247 (fixed)
Vendor states this is fixed in ed06675d3b8cd37120b447646d53f7cd3e6fcd63 (fixed)
Vendor states this is fixed in 4.11 (unaffected)
Vendor states this is fixed in 5.10.237 (unaffected)
Vendor states this is fixed in 5.15.181 (unaffected)
Vendor states this is fixed in 5.4.293 (unaffected)
Vendor states this is fixed in 6.1.135 (unaffected)
Vendor states this is fixed in 6.12.24 (unaffected)
Vendor states this is fixed in 6.13.12 (unaffected)
Vendor states this is fixed in 6.14.3 (unaffected)
Vendor states this is fixed in 6.15 (unaffected)
Vendor states this is fixed in 6.6.88 (unaffected)

References (11)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/09c2dcda2c551bba30710c33f6ac678ae7395389
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/24e6280cdd7f8d01fc6b9b365fb800c2fb7ea9bb
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/69ae94725f4fc9e75219d2d69022029c5b24bc9a
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/7c5957f7905b4aede9d7a559d271438f3ca9e852
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/84895f5ce3829d9fc030e5ec2d8729da4c0c9d08
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a40cbfbb8f95c325430f017883da669b2aa927d4
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/d0e02d3d27a0b4dcb13f954f537ca1dd8f282dcf
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/d4d40e437adb376be16b3a12dd5c63f0fa768247

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-401

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card