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GSD-2024-26974
Vulnerability from gsd - Updated: 2024-02-20 06:02Details
** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.
Aliases
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CVE-2024-26974 (GCVE-0-2024-26974)
Vulnerability from cvelistv5 – Published: 2024-05-01 05:20 – Updated: 2026-08-05 11:28
VLAI
EPSS
VEX
Title
crypto: qat - resolve race condition during AER recovery
Summary
In the Linux kernel, the following vulnerability has been resolved:
crypto: qat - resolve race condition during AER recovery
During the PCI AER system's error recovery process, the kernel driver
may encounter a race condition with freeing the reset_data structure's
memory. If the device restart will take more than 10 seconds the function
scheduling that restart will exit due to a timeout, and the reset_data
structure will be freed. However, this data structure is used for
completion notification after the restart is completed, which leads
to a UAF bug.
This results in a KFENCE bug notice.
BUG: KFENCE: use-after-free read in adf_device_reset_worker+0x38/0xa0 [intel_qat]
Use-after-free read at 0x00000000bc56fddf (in kfence-#142):
adf_device_reset_worker+0x38/0xa0 [intel_qat]
process_one_work+0x173/0x340
To resolve this race condition, the memory associated to the container
of the work_struct is freed on the worker if the timeout expired,
otherwise on the function that schedules the worker.
The timeout detection can be done by checking if the caller is
still waiting for completion or not by using completion_done() function.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
12 references
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
d8cba25d2c68992a6e7c1d329b690a9ebe01167d , < daba62d9eeddcc5b1081be7d348ca836c83c59d7
(git)
Affected: d8cba25d2c68992a6e7c1d329b690a9ebe01167d , < 8e81cd58aee14a470891733181a47d123193ba81 (git) Affected: d8cba25d2c68992a6e7c1d329b690a9ebe01167d , < d03092550f526a79cf1ade7f0dfa74906f39eb71 (git) Affected: d8cba25d2c68992a6e7c1d329b690a9ebe01167d , < 4ae5a97781ce7d6ecc9c7055396535815b64ca4f (git) Affected: d8cba25d2c68992a6e7c1d329b690a9ebe01167d , < 226fc408c5fcd23cc4186f05ea3a09a7a9aef2f7 (git) Affected: d8cba25d2c68992a6e7c1d329b690a9ebe01167d , < 8a5a7611ccc7b1fba8d933a9f22a2e76859d94dc (git) Affected: d8cba25d2c68992a6e7c1d329b690a9ebe01167d , < 0c2cf5142bfb634c0ef0a1a69cdf37950747d0be (git) Affected: d8cba25d2c68992a6e7c1d329b690a9ebe01167d , < bb279ead42263e9fb09480f02a4247b2c287d828 (git) Affected: d8cba25d2c68992a6e7c1d329b690a9ebe01167d , < 7d42e097607c4d246d99225bf2b195b6167a210c (git) |
|
| Linux | Linux |
Affected:
3.17
Unaffected: 0 , < 3.17 (semver) Unaffected: 4.19.312 , ≤ 4.19.* (semver) Unaffected: 5.4.274 , ≤ 5.4.* (semver) Unaffected: 5.10.215 , ≤ 5.10.* (semver) Unaffected: 5.15.154 , ≤ 5.15.* (semver) Unaffected: 6.1.84 , ≤ 6.1.* (semver) Unaffected: 6.6.24 , ≤ 6.6.* (semver) Unaffected: 6.7.12 , ≤ 6.7.* (semver) Unaffected: 6.8.3 , ≤ 6.8.* (semver) Unaffected: 6.9 , ≤ * (original_commit_for_fix) |
|
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem |
Affected:
0 , < *
(custom)
|
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"value": "AV:L - The vulnerable `adf_slot_reset()` runs in the host kernel\u0027s PCIe AER/EEH error-recovery machinery for the local QAT accelerator; there is no network- or adjacent-network-facing path to `drivers/crypto/intel/qat/qat_common/adf_aer.c`. The attacker must be local to the host \u2014 a co-resident guest/VFIO holder of a QAT function on the same PCIe hierarchy, or a local actor able to drive AER recovery.\nAC:L - The attacker controls the triggering event (the PCIe error that starts recovery), and the losing side of the race is not a narrow window \u2014 a device that has just taken an uncorrectable error leaves MMIO reads returning all-ones, so `adf_dev_up()` runs every poll loop to its full timeout (5 s admin-message poll plus 3 s firmware-auth waits) and deterministically exceeds the caller\u0027s 10-second `wait_for_completion_timeout`. The UAF was observed occurring naturally in the field via KFENCE, confirming the window is routinely hit.\nPR:L - SR-IOV VF assignment is the mainstream QAT deployment model, and a tenant guest or VFIO-granted user holding a QAT function can make it signal an uncorrectable error; `pci_walk_bridge()` then broadcasts `slot_reset` across the port\u0027s subordinate bus, invoking the host PF\u0027s `adf_slot_reset()` \u2014 no host root needed. Unprivileged local users can additionally drive arbitrary traffic through the device via AF_ALG, which dispatches to the QAT skcipher/aead implementations.\nUI:N - The reset worker and the timing-out caller both run entirely within kernel context once the PCIe error is signalled; no victim action, mount, or file open is required.\nS:U - The freed `adf_reset_dev_data` and the corruption caused by the stale `complete()` are both host kernel heap objects under the same security authority; no hypervisor, IOMMU, or sandbox boundary is itself bypassed by the flaw.\nC:H - The worker performs a use-after-free read of `reset_data-\u003emode` and dereferences `x-\u003ewait.task_list` out of the freed ~80-byte `kmalloc-96` object, a cache an attacker can reliably reoccupy with sprayed objects (msg_msg, xattr, etc.), turning the stale reference into a controlled read of kernel memory.\nI:H - `complete()` on the freed object writes into it \u2014 taking a raw spinlock, incrementing `x-\u003edone`, and running `swake_up_locked()` over an attacker-groomed wait list, yielding `wake_up_process()` on a controlled task pointer; because `ADF_DEV_RESET_ASYNC == 0`, a zeroed reallocation of the slot also produces a second `kfree()` on the already-freed pointer, a classic double-free route to an arbitrary write.\nA:H - The use-after-free and potential double free corrupt the slab allocator, producing KASAN/KFENCE splats and kernel panics (immediate under `panic_on_warn`), and the reset path additionally hits `WARN(1, \"QAT: device restart failed. Device is unusable\")`, leaving the crypto accelerator dead."
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Loading…
Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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