CVE-2023-54026opp: Fix use-after-free in lazy_opp_tables after probe deferral
- 7.8HighCVSS base score
- 0.14%Exploitation in 30 daysEPSS · top 97% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: opp: Fix use-after-free in lazy_opp_tables after probe deferral When dev_pm_opp_of_find_icc_paths() in _allocate_opp_table() returns -EPROBE_DEFER, the opp_table is freed again, to wait until all the interconnect paths are available. However, if the OPP table is using required-opps then it may already have been added to the global lazy_opp_tables list. The error path does not remove the opp_table from the list again. This can cause crashes later when the provider of the required-opps is added, since we will iterate over OPP tables that have already been freed. E.g.: Unable to handle kernel NULL pointer dereference when read CPU: 0 PID: 7 Comm: kworker/0:0 Not tainted 6.4.0-rc3 PC is at _of_add_opp_table_v2 (include/linux/of.h:949 drivers/opp/of.c:98 drivers/opp/of.c:344 drivers/opp/of.c:404 drivers/opp/of.c:1032) -> lazy_link_required_opp_table() Fix this by calling _of_clear_opp_table() to remove the opp_table from the list and clear other allocated resources. While at it, also add the missing mutex_destroy() calls in the error path.
Timeline
ID reserved
By Linux
Published
- 7 months later
· 7 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.14% · top 97% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 7eba0c7641b0009818e469dbfcdd87a0155ab9d4 – < 39a0e723d3502f6dc4c603f57ebe8dc7bcc4a4bc
- affected 7eba0c7641b0009818e469dbfcdd87a0155ab9d4 – < 76ab057de777723ec924654502d1a260ba7d7d54
- affected 7eba0c7641b0009818e469dbfcdd87a0155ab9d4 – < c05e76d6b249e5254c31994eedd06dd3cc90dee0
- affected 7eba0c7641b0009818e469dbfcdd87a0155ab9d4 – < b2a2ab039bd58f51355e33d7d3fc64605d7f870d
- affected 5.12
- unaffected < 5.12
- unaffected 5.15.121 – ≤ 5.15.*
- unaffected 6.1.40 – ≤ 6.1.*
- unaffected 6.4.5 – ≤ 6.4.*
- unaffected 6.5 – ≤ *
References
References4
- https://git.kernel.org/stable/c/39a0e723d3502f6dc4c603f57ebe8dc7bcc4a4bc (opens in a new tab)
- https://git.kernel.org/stable/c/76ab057de777723ec924654502d1a260ba7d7d54 (opens in a new tab)
- https://git.kernel.org/stable/c/c05e76d6b249e5254c31994eedd06dd3cc90dee0 (opens in a new tab)
- https://git.kernel.org/stable/c/b2a2ab039bd58f51355e33d7d3fc64605d7f870d (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-205119 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-54026)Record last updated .