Linux Kernel up to 7.1.8 atlantic aq_ring_rx_deinit release of resource

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.2$0-$5k0.88

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 7.1.8. This affects the function aq_ring_rx_deinit of the component atlantic. Executing a manipulation can lead to release of resource. This vulnerability is tracked as CVE-2026-74622. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 7.1.8 and classified as critical. This vulnerability affects the function aq_ring_rx_deinit of the component atlantic. The manipulation with an unknown input leads to a release of resource vulnerability. The CWE definition for the vulnerability is CWE-772. The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed. As an impact it is known to affect availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: net: atlantic: free RX pages of consumed but not refilled buffers aq_ring_rx_deinit() only walks [sw_head, sw_tail), the region posted to hardware. Since the page reuse strategy was added, a cleaned RX buffer keeps its page (and its DMA mapping) in the ring for reuse, and refill is batched: aq_ring_rx_fill() returns early until AQ_CFG_RX_REFILL_THRES slots are free. Slots that were consumed but not yet reposted therefore sit in the complementary [sw_tail, sw_head) gap with a live page, and the deinit walk never visits them: up to a refill batch worth of pages and DMA mappings leak on every interface down. Walk the whole ring instead and release whatever is still there. Also bail out if the buffer ring is already gone: a partial aq_ptp_ring_alloc() failure frees the ring but leaves aq_nic set, so aq_ptp_ring_deinit() still gets here on the unwind path.

The advisory is available at git.kernel.org. This vulnerability was named CVE-2026-74622 since 08/15/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/22/2026). This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 5.10.265, 5.15.216, 6.1.183, 6.6.152, 6.12.104, 6.18.45 or 7.1.9 eliminates this vulnerability. Applying the patch 1e58b0bab40dcbdfc04acaba6a221d40801c3770/30c473ea097ef0c93b064281b3e295c97d17e28b/17c99dd86f169c7a3e73d6778e79ef5b1ed3ceac/ff451bc4290b79c04f1c5cfa928d448f9d47ecf5/64e1346bc66b947eb80b848e4c8d9828ba50e0fe/782cc40b7ade4614a8aec0b948b8cf95c69f8d4b/24d87dc28ddd3771dd0e88719209811809729439/e8e7471ef686b6c002218fee9671cc61992ae01a is able to eliminate this problem.

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Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Release of resource
CWE: CWE-772 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.265/5.15.216/6.1.183/6.6.152/6.12.104/6.18.45/7.1.9
Patch: 1e58b0bab40dcbdfc04acaba6a221d40801c3770/30c473ea097ef0c93b064281b3e295c97d17e28b/17c99dd86f169c7a3e73d6778e79ef5b1ed3ceac/ff451bc4290b79c04f1c5cfa928d448f9d47ecf5/64e1346bc66b947eb80b848e4c8d9828ba50e0fe/782cc40b7ade4614a8aec0b948b8cf95c69f8d4b/24d87dc28ddd3771dd0e88719209811809729439/e8e7471ef686b6c002218fee9671cc61992ae01a

Timelineinfo

08/15/2026 CVE reserved
08/22/2026 +7 days Advisory disclosed
08/22/2026 +0 days VulDB entry created
08/22/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-74622 (🔒)
GCVE (CVE): GCVE-0-2026-74622
GCVE (VulDB): GCVE-100-394402

Entryinfo

Created: 08/22/2026 18:16
Changes: 08/22/2026 18:16 (59)
Complete: 🔍
Cache ID: 216::103

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