PCI/ASPM: Fix link state exit during switch upstream function removal

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2024-58093
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-04-16 15:15:53 UTC
Updated2026-07-16 12:16:43 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: PCI/ASPM: Fix link state exit during switch upstream function removal Before 456d8aa37d0f ("PCI/ASPM: Disable ASPM on MFD function removal to avoid use-after-free"), we would free the ASPM link only after the last function on the bus pertaining to the given link was removed. That was too late. If function 0 is removed before sibling function, link->downstream would point to free'd memory after. After above change, we freed the ASPM parent link state upon any function removal on the bus pertaining to a given link. That is too early. If the link is to a PCIe switch with MFD on the upstream port, then removing functions other than 0 first would free a link which still remains parent_link to the remaining downstream ports. The resulting GPFs are especially frequent during hot-unplug, because pciehp removes devices on the link bus in reverse order. On that switch, function 0 is the virtual P2P bridge to the internal bus. Free exactly when function 0 is removed -- before the parent link is obsolete, but after all subordinate links are gone. [kwilczynski: commit log]

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-416

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 666e7f9d60cee23077ea3e6331f6f8a19f7ea03f 0a0f9aecf66b98959aab7fb5764b4b3e522f4f5b git Not specified
CNA Linux Linux affected 7badf4d6f49a358a01ab072bbff88d3ee886c33b 62db339ecc3d58d8fd83a9e4d80061cd943bb6e2 git Not specified
CNA Linux Linux affected 9856c0de49052174ab474113f4ba40c02aaee086 e5cd58f61e9d8024ee11bd78c12c8916891d4077 git Not specified
CNA Linux Linux affected 7aecdd47910c51707696e8b0e045b9f88bd4230f cd4b07507794f7ad1a74e12eca75121d98187e66 git Not specified
CNA Linux Linux affected 456d8aa37d0f56fc9e985e812496e861dcd6f2f2 8b930ddc2044e36866c41423e89889e0258695a3 git Not specified
CNA Linux Linux affected 456d8aa37d0f56fc9e985e812496e861dcd6f2f2 f556b6ba0ac5f8353287ce6ed761228f0b4fafb7 git Not specified
CNA Linux Linux affected 456d8aa37d0f56fc9e985e812496e861dcd6f2f2 ba4cdc14c0d4df00d3e99bff7fe545303db98183 git Not specified
CNA Linux Linux affected 456d8aa37d0f56fc9e985e812496e861dcd6f2f2 4d96930239981f312821a4065db8cc0f8240a173 git Not specified
CNA Linux Linux affected 456d8aa37d0f56fc9e985e812496e861dcd6f2f2 cbf937dcadfd571a434f8074d057b32cd14fbea5 git Not specified
CNA Linux Linux affected d51d2eeae4ce54d542909c4d9d07bf371a78592c git Not specified
CNA Linux Linux affected 4203722d51afe3d239e03f15cc73efdf023a7103 git Not specified
CNA Linux Linux affected 5.4.251 5.4.292 semver Not specified
CNA Linux Linux affected 5.10.188 5.10.236 semver Not specified
CNA Linux Linux affected 5.15.121 5.15.180 semver Not specified
CNA Linux Linux affected 6.1.39 6.1.134 semver Not specified
CNA Linux Linux affected 6.3.13 6.4 semver Not specified
CNA Linux Linux affected 6.4.4 6.5 semver Not specified
CNA Linux Linux affected 6.5 Not specified
CNA Linux Linux unaffected 6.5 semver Not specified
CNA Linux Linux unaffected 5.4.292 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.236 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.180 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.134 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.87 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.23 6.12.* semver Not specified
CNA Linux Linux unaffected 6.13.11 6.13.* semver Not specified
CNA Linux Linux unaffected 6.14.2 6.14.* semver Not specified
CNA Linux Linux unaffected 6.15 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/f556b6ba0ac5f8353287ce6ed761228f0b4fafb7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0a0f9aecf66b98959aab7fb5764b4b3e522f4f5b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/62db339ecc3d58d8fd83a9e4d80061cd943bb6e2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/cbf937dcadfd571a434f8074d057b32cd14fbea5 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/8b930ddc2044e36866c41423e89889e0258695a3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/4d96930239981f312821a4065db8cc0f8240a173 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/cd4b07507794f7ad1a74e12eca75121d98187e66 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ba4cdc14c0d4df00d3e99bff7fe545303db98183 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e5cd58f61e9d8024ee11bd78c12c8916891d4077 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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