CVE-2026-41035

Publication date 16 April 2026

Last updated 2 June 2026

Ubuntu priority

Cvss 3 Severity Score

Description

In rsync 3.0.1 through 3.4.1, receive_xattr relies on an untrusted length value during a qsort call, leading to a receiver use-after-free. The victim must run rsync with -X (aka --xattrs). On Linux, many (but not all) common configurations are vulnerable. Non-Linux platforms are more widely vulnerable.

Read the notes from the security team

Why is this CVE low priority?

Per rsync developers this has no security impact

Learn more about Ubuntu priority

Status

Show unmaintained releases

Package	Ubuntu Release	Status
rsync	26.04 LTS resolute	Fixed 3.4.1+ds1-7ubuntu0.2
	25.10 questing	Fixed 3.4.1+ds1-5ubuntu1.2
	24.04 LTS noble	Fixed 3.2.7-1ubuntu1.4
	22.04 LTS jammy	Fixed 3.2.7-0ubuntu0.22.04.6
	20.04 LTS focal	Fixed 3.1.3-8ubuntu0.9+esm1
	18.04 LTS bionic	Fixed 3.1.2-2.1ubuntu1.6+esm3
	16.04 LTS xenial	Fixed 3.1.1-3ubuntu1.3+esm5
	14.04 LTS trusty	Fixed 3.1.0-2ubuntu0.4+esm3

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Notes

mdeslaur

Per rsync developers, this is not an exploitable issue. "the attack is the equivalent of the user closing the socket themselves." Marking as low priority

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
rsync	Upstream: bb0a811

Severity score breakdown

Parameter	Value
Base score	7.4 · High
Attack vector	Network
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Changed
Confidentiality	Low
Integrity impact	Low
Availability impact	Low
Vector	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L