7.8

CVE-2023-52491: media: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run

Modified
AliasesUBUNTU-CVE-2023-52491DEBIAN-CVE-2023-52491
Published 29-02-2024Last modified 05-08-2026

Vulnerability summary

CVE-2023-52491 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 20.3% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.28%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 13 · Related 14
DLA-3842-1DSA-5681-1USN-6766-1USN-6766-2USN-6766-3USN-6795-1

Timeline

  1. 29-02-2024
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: media: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run In mtk_jpeg_probe, &jpeg->job_timeout_work is bound with mtk_jpeg_job_timeout_work. In mtk_jpeg_dec_device_run, if error happens in mtk_jpeg_set_dec_dst, it will finally start the worker while mark the job as finished by invoking v4l2_m2m_job_finish. There are two methods to trigger the bug. If we remove the module, it which will call mtk_jpeg_remove to make cleanup. The possible sequence is as follows, which will cause a use-after-free bug. CPU0 CPU1 mtk_jpeg_dec_... | start worker | |mtk_jpeg_job_timeout_work mtk_jpeg_remove | v4l2_m2m_release | kfree(m2m_dev); | | | v4l2_m2m_get_curr_priv | m2m_dev->curr_ctx //use If we close the file descriptor, which will call mtk_jpeg_release, it will have a similar sequence. Fix this bug by starting timeout worker only if started jpegdec worker successfully. Then v4l2_m2m_job_finish will only be called in either mtk_jpeg_job_timeout_work or mtk_jpeg_dec_device_run.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.28%

Chance of exploitation in the next 30 days

Percentile

20%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.28% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu104 products
  • linux< 5.15.0-106.116
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1061.67
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ b2f0d2724ba477d326e9d654d4db1c93e98f8b93, < 43872f44eee6c6781fea1348b38885d8e78face9 | ≥ b2f0d2724ba477d326e9d654d4db1c93e98f8b93, < 1b1036c60a37a30caf6759a90fe5ecd06ec35590 | ≥ b2f0d2724ba477d326e9d654d4db1c93e98f8b93, < 9fec4db7fff54d9b0306a332bab31eac47eeb5f6 | ≥ b2f0d2724ba477d326e9d654d4db1c93e98f8b93, < 8254d54d00eb6cdb8367399c7f912eb8d354ecd7 | ≥ b2f0d2724ba477d326e9d654d4db1c93e98f8b93, < 6e2f37022f0fc0893da4d85a0500c9d547fffd4c | ≥ b2f0d2724ba477d326e9d654d4db1c93e98f8b93, < 206c857dd17d4d026de85866f1b5f0969f2a109e | 4.12
  • linux_kernel≥ 4.12, < 5.10.210 | ≥ 5.11, < 5.15.149 | ≥ 5.16, < 6.1.76 | ≥ 6.2, < 6.6.15 | ≥ 6.7, < 6.7.3
Debian1 product
  • linux< 6.1.76-1 | < 6.6.15-1

3 vendors · 107 products

References

24 links
Show all 24 references