CVE-2026-97446ACPICA: Fix NULL pointer dereference in acpi_ns_custom_package()
- —Not scoredno CVSS score yet
- 0.17%Exploitation in 30 daysEPSS · top 93% 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: ACPICA: Fix NULL pointer dereference in acpi_ns_custom_package() acpi_ns_custom_package() unconditionally dereferences the first element of the package to read the _BIX version number, without checking for NULL: if ((*Elements)->Common.Type != ACPI_TYPE_INTEGER) When firmware returns a _BIX package whose first element is an unresolvable reference, ACPICA evaluates that entry to NULL. acpi_ns_remove_null_elements() does not strip NULL entries for ACPI_PTYPE_CUSTOM packages (fixed-position format would break if elements were shifted), so acpi_ns_custom_package() sees the NULL and causes a crash. Add a NULL check for the first element (version field) before dereferencing it. The caller then receives AE_AML_OPERAND_TYPE instead of crashing.
Timeline
ID reserved
By Linux
Published
- 9 days later
· 9 days 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
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.17% · top 93% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 7952d40240855932de01bbe81c02bf1416ec91d8 – < fad537538cdfcdc51e41db61bbf9ebe5ed9427eb
- affected 7952d40240855932de01bbe81c02bf1416ec91d8 – < 9936507ac0f2379787a2a805b11ab1cf0f241372
- affected 7952d40240855932de01bbe81c02bf1416ec91d8 – < 644888605f55395e6012ed43e3ed643ef7ab5013
- affected 7952d40240855932de01bbe81c02bf1416ec91d8 – < 08c5dee5da1d8d99b5a4e94db5a3d873c491771e
- affected 7952d40240855932de01bbe81c02bf1416ec91d8 – < 3762c6c8ae5073892d7cec736cc54270c7c9ce90
- affected 7952d40240855932de01bbe81c02bf1416ec91d8 – < 3cbf096a478f4fa03953f0685ad28c9c82ce67cb
- affected 7952d40240855932de01bbe81c02bf1416ec91d8 – < f8d14b7bb0063bbbd86c0e4d73edb8cea7b362bc
- affected 4.7
- unaffected < 4.7
- unaffected 5.10.271 – ≤ 5.10.*
- unaffected 5.15.222 – ≤ 5.15.*
- unaffected 6.1.189 – ≤ 6.1.*
- unaffected 6.6.158 – ≤ 6.6.*
- unaffected 6.12.111 – ≤ 6.12.*
- unaffected 6.18.53 – ≤ 6.18.*
- unaffected 7.2 – ≤ *
References
References7
- https://git.kernel.org/stable/c/fad537538cdfcdc51e41db61bbf9ebe5ed9427eb (opens in a new tab)
- https://git.kernel.org/stable/c/9936507ac0f2379787a2a805b11ab1cf0f241372 (opens in a new tab)
- https://git.kernel.org/stable/c/644888605f55395e6012ed43e3ed643ef7ab5013 (opens in a new tab)
- https://git.kernel.org/stable/c/08c5dee5da1d8d99b5a4e94db5a3d873c491771e (opens in a new tab)
- https://git.kernel.org/stable/c/3762c6c8ae5073892d7cec736cc54270c7c9ce90 (opens in a new tab)
- https://git.kernel.org/stable/c/3cbf096a478f4fa03953f0685ad28c9c82ce67cb (opens in a new tab)
- https://git.kernel.org/stable/c/f8d14b7bb0063bbbd86c0e4d73edb8cea7b362bc (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-2026-86059 (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)
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[](https://cveledger.app/cve/CVE-2026-97446)Record last updated .