Answer in brief
CVE-2022-50423 records a High severity (CVSS 7.8) vulnerability in ACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | 3.17 | Not reported |
| Linux/Linuxgeneric | >=8aa5e56eeb61a099ea6519eb30ee399e1bc043ce <133462d35dae95edb944af86b986d4c9dec59bd1 || >=8aa5e56eeb61a099ea6519eb30ee399e1bc043ce <02f237423c9c6a18e062de2d474f85d5659e4eb9 || >=8aa5e56eeb61a099ea6519eb30ee399e1bc043ce <c9125b643fc51b8e662f2f614096ceb45a0adbc3 || >=8aa5e56eeb61a099ea6519eb30ee399e1bc043ce <dfdde4d5138bc023897033a5ac653a84e94805be || >=8aa5e56eeb61a099ea6519eb30ee399e1bc043ce <02617006b5a46f2ea55ac61f5693c7afd7bf9276 || >=8aa5e56eeb61a099ea6519eb30ee399e1bc043ce <6fde666278f91b85d71545a0ebbf41d8d7af8074 || >=8aa5e56eeb61a099ea6519eb30ee399e1bc043ce <f51b2235e4f320edc839c3e5cb0d1f8a6e8657c6 || >=8aa5e56eeb61a099ea6519eb30ee399e1bc043ce <01f2c2052ea50fb9a8ce12e4e83aed0267934ef0 || >=8aa5e56eeb61a099ea6519eb30ee399e1bc043ce <470188b09e92d83c5a997f25f0e8fb8cd2bc3469 || b3e98f0c4f996cd53b80bad71f0d7e4a2cf3a4e8 || 7af5504c102a378376101dbd160246b10a814dd0 || e29a15484d7ea949e49ae7fb7e576a575da824a6 || e2ab6731a36966d042a2d4dabd980496cd680f75 || >=3.10.55 <3.11 || >=3.12.29 <3.13 || >=3.14.19 <3.15 || >=3.16.3 <3.17 | 133462d35dae95edb944af86b986d4c9dec59bd1, 02f237423c9c6a18e062de2d474f85d5659e4eb9, c9125b643fc51b8e662f2f614096ceb45a0adbc3, dfdde4d5138bc023897033a5ac653a84e94805be, 02617006b5a46f2ea55ac61f5693c7afd7bf9276, 6fde666278f91b85d71545a0ebbf41d8d7af8074, f51b2235e4f320edc839c3e5cb0d1f8a6e8657c6, 01f2c2052ea50fb9a8ce12e4e83aed0267934ef0, 470188b09e92d83c5a997f25f0e8fb8cd2bc3469, 3.11, 3.13, 3.15, 3.17 |
Published upstream
Oct 1, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: ACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage() There is an use-after-free reported by KASAN: BUG: KASAN: use-after-free in acpi_ut_remove_reference+0x3b/0x82 Read of size 1 at addr ffff888112afc460 by task modprobe/2111 CPU: 0 PID: 2111 Comm: modprobe Not tainted 6.1.0-rc7-dirty Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), Call Trace: <TASK> kasan_report+0xae/0xe0 acpi_ut_remove_reference+0x3b/0x82 acpi_ut_copy_iobject_to_iobject+0x3be/0x3d5 acpi_ds_store_object_to_local+0x15d/0x3a0 acpi_ex_store+0x78d/0x7fd acpi_ex_opcode_1A_1T_1R+0xbe4/0xf9b acpi_ps_parse_aml+0x217/0x8d5 ... </TASK> The root cause of the problem is that the acpi_operand_object is freed when acpi_ut_walk_package_tree() fails in acpi_ut_copy_ipackage_to_ipackage(), lead to repeated release in acpi_ut_copy_iobject_to_iobject(). The problem was introduced by "8aa5e56eeb61" commit, this commit is to fix memory leak in acpi_ut_copy_iobject_to_iobject(), repeatedly adding remove operation, lead to "acpi_operand_object" used after free. Fix it by removing acpi_ut_remove_reference() in acpi_ut_copy_ipackage_to_ipackage(). acpi_ut_copy_ipackage_to_ipackage() is called to copy an internal package object into another internal package object, when it fails, the memory of acpi_operand_object should be freed by the caller.
Quoted source text, attributed separately from HOL analysis.