ACPICA: Revert "ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine."
In the Linux kernel, the following vulnerability has been resolved: ACPICA: Revert "ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine." Undo the modifications made in commit d410ee5109a1 ("ACPICA: avoid "Info: mapping multiple BARs. Your kernel is fine.""). The initial purpose of this commit was to stop memory mappings for operation regions from overlapping page boundaries, as it can trigger warnings if different page attributes are present. However, it was found that when this situation arises, mapping continues until the boundary's end, but there is still an attempt to read/write the entire length of the map, leading to a NULL pointer deference. For example, if a four-byte mapping request is made but only one byte is mapped because it hits the current page boundary's end, a four-byte read/write attempt is still made, resulting in a NULL pointer deference. Instead, map the entire length, as the ACPI specification does not mandate that it must be within the same page boundary. It is permissible for it to be mapped across different regions.
Noroxi analysis
No Noroxi analysis for this record yet
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We use this product, ask for help- Published
- Jul 12, 2024
- Updated
- Aug 5, 2026
- EPSS
- 0.3% · 20th percentile
- CWE
- CWE-476
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Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 22 / 40 · 5.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.3%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 5.5
- CNA · Linux
- 7.8
- 2.3 point gap
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- linux linux kernel2.6.32 and later · before 4.19.317
- linux linux kernel4.20 and later · before 5.4.279
- linux linux kernel5.5 and later · before 5.10.221
- linux linux kernel5.11 and later · before 5.15.162
- linux linux kernel5.16 and later · before 6.1.96
- linux linux kernel6.2 and later · before 6.6.36
- linux linux kernel6.7 and later · before 6.9.7
- linux linux kernel6.10
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.
Linux Linux
- 2.6.32affected
- d410ee5109a1633a686a5663c6743a92e1181f9b and later · before 435ecc978c3d5d0c4e172ec5b956dc1904061d98affected · git
- d410ee5109a1633a686a5663c6743a92e1181f9b and later · before ae465109d82f4fb03c5adbe85f2d6a6a3d59124caffected · git
- d410ee5109a1633a686a5663c6743a92e1181f9b and later · before 6eca23100e9030725f69c1babacd58803f29ec8daffected · git
- d410ee5109a1633a686a5663c6743a92e1181f9b and later · before dc5017c57f5eee80020c73ff8b67ba7f9fd08b1faffected · git
- d410ee5109a1633a686a5663c6743a92e1181f9b and later · before ddc1f5f124479360a1fd43f73be950781d172239affected · git
- d410ee5109a1633a686a5663c6743a92e1181f9b and later · before 434c6b924e1f4c219aab2d9e05fe79c5364e37d3affected · git
- d410ee5109a1633a686a5663c6743a92e1181f9b and later · before e21a4c9129c72fa54dd00f5ebf71219b41d43c04affected · git
- d410ee5109a1633a686a5663c6743a92e1181f9b and later · before a83e1385b780d41307433ddbc86e3c528db031f0affected · git
- before 2.6.32not affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:9 | bpftool | before 7.3.0-427.37.1.el9_4 | 7.3.0-427.37.1.el9_4 |
| AlmaLinux:9 | kernel | before 5.14.0-427.37.1.el9_4 | 5.14.0-427.37.1.el9_4 |
| AlmaLinux:9 | kernel-64k | before 5.14.0-427.37.1.el9_4 | 5.14.0-427.37.1.el9_4 |
| AlmaLinux:9 | kernel-64k-core | before 5.14.0-427.37.1.el9_4 | 5.14.0-427.37.1.el9_4 |
| AlmaLinux:9 | kernel-64k-debug | before 5.14.0-427.37.1.el9_4 | 5.14.0-427.37.1.el9_4 |
| AlmaLinux:9 | kernel-64k-debug-core | before 5.14.0-427.37.1.el9_4 | 5.14.0-427.37.1.el9_4 |
| AlmaLinux:9 | kernel-64k-debug-devel | before 5.14.0-427.37.1.el9_4 | 5.14.0-427.37.1.el9_4 |
| AlmaLinux:9 | kernel-64k-debug-devel-matched | before 5.14.0-427.37.1.el9_4 | 5.14.0-427.37.1.el9_4 |
| AlmaLinux:9 | kernel-64k-debug-modules | before 5.14.0-427.37.1.el9_4 | 5.14.0-427.37.1.el9_4 |
| AlmaLinux:9 | kernel-64k-debug-modules-core | before 5.14.0-427.37.1.el9_4 | 5.14.0-427.37.1.el9_4 |
| AlmaLinux:9 | kernel-64k-debug-modules-extra | before 5.14.0-427.37.1.el9_4 | 5.14.0-427.37.1.el9_4 |
| AlmaLinux:9 | kernel-64k-devel | before 5.14.0-427.37.1.el9_4 | 5.14.0-427.37.1.el9_4 |
| AlmaLinux:9 | kernel-64k-devel-matched | before 5.14.0-427.37.1.el9_4 | 5.14.0-427.37.1.el9_4 |
| AlmaLinux:9 | kernel-64k-modules | before 5.14.0-427.37.1.el9_4 | 5.14.0-427.37.1.el9_4 |
| AlmaLinux:9 | kernel-64k-modules-core | before 5.14.0-427.37.1.el9_4 | 5.14.0-427.37.1.el9_4 |
| AlmaLinux:9 | kernel-64k-modules-extra | before 5.14.0-427.37.1.el9_4 | 5.14.0-427.37.1.el9_4 |
| AlmaLinux:9 | kernel-abi-stablelists | before 5.14.0-427.37.1.el9_4 | 5.14.0-427.37.1.el9_4 |
| AlmaLinux:9 | kernel-core | before 5.14.0-427.37.1.el9_4 | 5.14.0-427.37.1.el9_4 |
| AlmaLinux:9 | kernel-cross-headers | before 5.14.0-427.37.1.el9_4 | 5.14.0-427.37.1.el9_4 |
| AlmaLinux:9 | kernel-debug | before 5.14.0-427.37.1.el9_4 | 5.14.0-427.37.1.el9_4 |
| AlmaLinux:9 | kernel-debug-core | before 5.14.0-427.37.1.el9_4 | 5.14.0-427.37.1.el9_4 |
| AlmaLinux:9 | kernel-debug-devel | before 5.14.0-427.37.1.el9_4 | 5.14.0-427.37.1.el9_4 |
| AlmaLinux:9 | kernel-debug-devel-matched | before 5.14.0-427.37.1.el9_4 | 5.14.0-427.37.1.el9_4 |
| AlmaLinux:9 | kernel-debug-modules | before 5.14.0-427.37.1.el9_4 | 5.14.0-427.37.1.el9_4 |
+96
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV89Now
- CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV85Now
- CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV83Now
- CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV77This week
- CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV77This week
- CVE-2013-2094The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows loKEV77This week
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Linux Linux | 434c6b924e1f4c219aab2d9e05fe79c5364e37d3 | Vendor (CNA) |
| Linux Linux | 435ecc978c3d5d0c4e172ec5b956dc1904061d98 | Vendor (CNA) |
| Linux Linux | 6eca23100e9030725f69c1babacd58803f29ec8d | Vendor (CNA) |
| Linux Linux | a83e1385b780d41307433ddbc86e3c528db031f0 | Vendor (CNA) |
| Linux Linux | ae465109d82f4fb03c5adbe85f2d6a6a3d59124c | Vendor (CNA) |
| Linux Linux | dc5017c57f5eee80020c73ff8b67ba7f9fd08b1f | Vendor (CNA) |
| Linux Linux | ddc1f5f124479360a1fd43f73be950781d172239 | Vendor (CNA) |
| Linux Linux | e21a4c9129c72fa54dd00f5ebf71219b41d43c04 | Vendor (CNA) |
| almalinux:bpftool | 7.3.0-427.37.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel | 5.14.0-427.37.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k | 5.14.0-427.37.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-core | 5.14.0-427.37.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug | 5.14.0-427.37.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-core | 5.14.0-427.37.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-devel | 5.14.0-427.37.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-devel-matched | 5.14.0-427.37.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-modules | 5.14.0-427.37.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-modules-core | 5.14.0-427.37.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-modules-extra | 5.14.0-427.37.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-devel | 5.14.0-427.37.1.el9_4 · AlmaLinux:9 | Package registry (OSV) |
| debian:linux | 6.1.99-1 · Debian:12 | Package registry (OSV) |
| red hat:bpftool-debuginfo | 0:7.0.0-284.84.1.el9_2 · Red Hat:rhel_eus:9.2::appstream | Package registry (OSV) |
| red hat:kernel-64k-debug-debuginfo | 0:5.14.0-284.84.1.el9_2 · Red Hat:rhel_eus:9.2::appstream | Package registry (OSV) |
| red hat:kernel-64k-debug-devel | 0:5.14.0-284.84.1.el9_2 · Red Hat:rhel_eus:9.2::appstream | Package registry (OSV) |
| red hat:kernel-64k-debug-devel-matched | 0:5.14.0-284.84.1.el9_2 · Red Hat:rhel_eus:9.2::appstream | Package registry (OSV) |
| red hat:kernel-64k-debuginfo | 0:5.14.0-284.84.1.el9_2 · Red Hat:rhel_eus:9.2::appstream | Package registry (OSV) |
| red hat:kernel-64k-devel | 0:5.14.0-284.84.1.el9_2 · Red Hat:rhel_eus:9.2::appstream | Package registry (OSV) |
| red hat:kernel-64k-devel-matched | 0:5.14.0-284.84.1.el9_2 · Red Hat:rhel_eus:9.2::appstream | Package registry (OSV) |
| red hat:kernel-debug-debuginfo | 0:5.14.0-284.84.1.el9_2 · Red Hat:rhel_eus:9.2::appstream | Package registry (OSV) |
| red hat:kernel-debug-devel | 0:5.14.0-284.84.1.el9_2 · Red Hat:rhel_eus:9.2::appstream | Package registry (OSV) |
+3
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-476 · NULL Pointer DereferenceCVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- git.kernel.org/stable/c/434c6b924e1f4c219aab2d9e05fe79c5364e37d3
- git.kernel.org/stable/c/435ecc978c3d5d0c4e172ec5b956dc1904061d98
- git.kernel.org/stable/c/6eca23100e9030725f69c1babacd58803f29ec8d
- git.kernel.org/stable/c/a83e1385b780d41307433ddbc86e3c528db031f0
- git.kernel.org/stable/c/ae465109d82f4fb03c5adbe85f2d6a6a3d59124c
- git.kernel.org/stable/c/dc5017c57f5eee80020c73ff8b67ba7f9fd08b1f
- git.kernel.org/stable/c/ddc1f5f124479360a1fd43f73be950781d172239
- git.kernel.org/stable/c/e21a4c9129c72fa54dd00f5ebf71219b41d43c04
- lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- cert-portal.siemens.com/productcert/html/ssa-265688.html
- cert-portal.siemens.com/productcert/html/ssa-355557.html
- cert-portal.siemens.com/productcert/html/ssa-613116.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.