CVE-2025-4516

Publication date 15 May 2025

Last updated 16 June 2025

Ubuntu priority

Medium

Why this priority?

There is an issue in CPython when using `bytes.decode("unicode_escape", error="ignore|replace")`. If you are not using the "unicode_escape" encoding or an error handler your usage is not affected. To work-around this issue you may stop using the error= handler and instead wrap the bytes.decode() call in a try-except catching the DecodeError.

Read the notes from the security team

Status

Package Ubuntu Release Status
python2.7 25.04 plucky Not in release
24.10 oracular Not in release
24.04 LTS noble Not in release
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected
python3.10 25.04 plucky Not in release
24.10 oracular Not in release
24.04 LTS noble Not in release
22.04 LTS jammy
Fixed 3.10.12-1~22.04.10
20.04 LTS focal Not in release
python3.11 25.04 plucky Not in release
24.10 oracular Not in release
24.04 LTS noble Not in release
22.04 LTS jammy
Fixed 3.11.0~rc1-1~22.04.1~esm4
20.04 LTS focal Not in release
python3.12 25.04 plucky Not in release
24.10 oracular
Fixed 3.12.7-1ubuntu2.1
24.04 LTS noble
Fixed 3.12.3-1ubuntu0.6
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
python3.13 25.04 plucky
Fixed 3.13.3-1ubuntu0.1
24.10 oracular
Needs evaluation
24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
python3.14 25.04 plucky Not in release
24.10 oracular Not in release
24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
python3.4 25.04 plucky Not in release
24.10 oracular Not in release
24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
14.04 LTS trusty
Not affected
python3.5 25.04 plucky Not in release
24.10 oracular Not in release
24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected
python3.6 25.04 plucky Not in release
24.10 oracular Not in release
24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic
Fixed 3.6.9-1~18.04ubuntu1.13+esm5
python3.7 25.04 plucky Not in release
24.10 oracular Not in release
24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic
Fixed 3.7.5-2ubuntu1~18.04.2+esm6
python3.8 25.04 plucky Not in release
24.10 oracular Not in release
24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal
Fixed 3.8.10-0ubuntu1~20.04.18+esm1
18.04 LTS bionic
Fixed 3.8.0-3ubuntu1~18.04.2+esm5
python3.9 25.04 plucky Not in release
24.10 oracular Not in release
24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal
Fixed 3.9.5-3ubuntu0~20.04.1+esm5

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Notes

hlibk

Seems to have been introduced in python3.6 with commit 5646648.

Patch details

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

Package Patch details
python3.12
python3.13
python3.14