CVE-2024-26680

net: atlantic: Fix DMA mapping for PTP hwts ring

Severity Score

4.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

In the Linux kernel, the following vulnerability has been resolved: net: atlantic: Fix DMA mapping for PTP hwts ring Function aq_ring_hwts_rx_alloc() maps extra AQ_CFG_RXDS_DEF bytes
for PTP HWTS ring but then generic aq_ring_free() does not take this
into account.
Create and use a specific function to free HWTS ring to fix this
issue. Trace:
[ 215.351607] ------------[ cut here ]------------
[ 215.351612] DMA-API: atlantic 0000:4b:00.0: device driver frees DMA memory with different size [device address=0x00000000fbdd0000] [map size=34816 bytes] [unmap size=32768 bytes]
[ 215.351635] WARNING: CPU: 33 PID: 10759 at kernel/dma/debug.c:988 check_unmap+0xa6f/0x2360
...
[ 215.581176] Call Trace:
[ 215.583632] <TASK>
[ 215.585745] ? show_trace_log_lvl+0x1c4/0x2df
[ 215.590114] ? show_trace_log_lvl+0x1c4/0x2df
[ 215.594497] ? debug_dma_free_coherent+0x196/0x210
[ 215.599305] ? check_unmap+0xa6f/0x2360
[ 215.603147] ? __warn+0xca/0x1d0
[ 215.606391] ? check_unmap+0xa6f/0x2360
[ 215.610237] ? report_bug+0x1ef/0x370
[ 215.613921] ? handle_bug+0x3c/0x70
[ 215.617423] ? exc_invalid_op+0x14/0x50
[ 215.621269] ? asm_exc_invalid_op+0x16/0x20
[ 215.625480] ? check_unmap+0xa6f/0x2360
[ 215.629331] ? mark_lock.part.0+0xca/0xa40
[ 215.633445] debug_dma_free_coherent+0x196/0x210
[ 215.638079] ? __pfx_debug_dma_free_coherent+0x10/0x10
[ 215.643242] ? slab_free_freelist_hook+0x11d/0x1d0
[ 215.648060] dma_free_attrs+0x6d/0x130
[ 215.651834] aq_ring_free+0x193/0x290 [atlantic]
[ 215.656487] aq_ptp_ring_free+0x67/0x110 [atlantic]
...
[ 216.127540] ---[ end trace 6467e5964dd2640b ]---
[ 216.132160] DMA-API: Mapped at:
[ 216.132162] debug_dma_alloc_coherent+0x66/0x2f0
[ 216.132165] dma_alloc_attrs+0xf5/0x1b0
[ 216.132168] aq_ring_hwts_rx_alloc+0x150/0x1f0 [atlantic]
[ 216.132193] aq_ptp_ring_alloc+0x1bb/0x540 [atlantic]
[ 216.132213] aq_nic_init+0x4a1/0x760 [atlantic]

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: atlantic: corrige el mapeo DMA para el anillo PTP hwts. La función aq_ring_hwts_rx_alloc() asigna bytes AQ_CFG_RXDS_DEF adicionales para el anillo PTP HWTS, pero luego el aq_ring_free() genérico no tiene esto en cuenta. Cree y utilice una función específica para liberar el anillo HWTS y solucionar este problema. Seguimiento: [215.351607] ------------[ cortar aquí ]------------ [ 215.351612] DMA-API: atlantic 0000:4b:00.0: el controlador de dispositivo se libera Memoria DMA con diferente tamaño [dirección del dispositivo=0x00000000fbdd0000] [tamaño del mapa=34816 bytes] [tamaño de desasignación=32768 bytes] [215.351635] ADVERTENCIA: CPU: 33 PID: 10759 en kernel/dma/debug.c:988 check_unmap+0xa6f/ 0x2360... [215.581176] Seguimiento de llamadas: [215.583632] [215.585745]? show_trace_log_lvl+0x1c4/0x2df [215.590114]? show_trace_log_lvl+0x1c4/0x2df [215.594497]? debug_dma_free_coherent+0x196/0x210 [215.599305]? check_unmap+0xa6f/0x2360 [215.603147]? __advertir+0xca/0x1d0 [215.606391] ? check_unmap+0xa6f/0x2360 [215.610237]? report_bug+0x1ef/0x370 [215.613921]? handle_bug+0x3c/0x70 [215.617423]? exc_invalid_op+0x14/0x50 [215.621269]? asm_exc_invalid_op+0x16/0x20 [215.625480]? check_unmap+0xa6f/0x2360 [215.629331]? mark_lock.part.0+0xca/0xa40 [215.633445] debug_dma_free_coherent+0x196/0x210 [215.638079]? __pfx_debug_dma_free_coherent+0x10/0x10 [215.643242] ? slab_free_freelist_hook+0x11d/0x1d0 [ 215.648060] dma_free_attrs+0x6d/0x130 [ 215.651834] aq_ring_free+0x193/0x290 [atlántico] [ 215.656487] aq_ptp_ring_free+0x67/0x110 [atlántico]... [216.127540] ---[fin de seguimiento 6467e5964dd2640b]- -- [ 216.132160] DMA-API: Asignado en: [ 216.132162] debug_dma_alloc_coherent+0x66/0x2f0 [ 216.132165] dma_alloc_attrs+0xf5/0x1b0 [ 216.132168] aq_ring_hwts_rx_alloc+0x150 /0x1f0 [atlántico] [ 216.132193] aq_ptp_ring_alloc+0x1bb/0x540 [atlántico] [216.132213] aq_nic_init+0x4a1/0x760 [atlántico]

In the Linux kernel, the following vulnerability has been resolved: net: atlantic: Fix DMA mapping for PTP hwts ring Function aq_ring_hwts_rx_alloc() maps extra AQ_CFG_RXDS_DEF bytes for PTP HWTS ring but then generic aq_ring_free() does not take this into account. Create and use a specific function to free HWTS ring to fix this issue. Trace: [ 215.351607] ------------[ cut here ]------------ [ 215.351612] DMA-API: atlantic 0000:4b:00.0: device driver frees DMA memory with different size [device address=0x00000000fbdd0000] [map size=34816 bytes] [unmap size=32768 bytes] [ 215.351635] WARNING: CPU: 33 PID: 10759 at kernel/dma/debug.c:988 check_unmap+0xa6f/0x2360 ... [ 215.581176] Call Trace: [ 215.583632] <TASK> [ 215.585745] ? show_trace_log_lvl+0x1c4/0x2df [ 215.590114] ? show_trace_log_lvl+0x1c4/0x2df [ 215.594497] ? debug_dma_free_coherent+0x196/0x210 [ 215.599305] ? check_unmap+0xa6f/0x2360 [ 215.603147] ? __warn+0xca/0x1d0 [ 215.606391] ? check_unmap+0xa6f/0x2360 [ 215.610237] ? report_bug+0x1ef/0x370 [ 215.613921] ? handle_bug+0x3c/0x70 [ 215.617423] ? exc_invalid_op+0x14/0x50 [ 215.621269] ? asm_exc_invalid_op+0x16/0x20 [ 215.625480] ? check_unmap+0xa6f/0x2360 [ 215.629331] ? mark_lock.part.0+0xca/0xa40 [ 215.633445] debug_dma_free_coherent+0x196/0x210 [ 215.638079] ? __pfx_debug_dma_free_coherent+0x10/0x10 [ 215.643242] ? slab_free_freelist_hook+0x11d/0x1d0 [ 215.648060] dma_free_attrs+0x6d/0x130 [ 215.651834] aq_ring_free+0x193/0x290 [atlantic] [ 215.656487] aq_ptp_ring_free+0x67/0x110 [atlantic] ... [ 216.127540] ---[ end trace 6467e5964dd2640b ]--- [ 216.132160] DMA-API: Mapped at: [ 216.132162] debug_dma_alloc_coherent+0x66/0x2f0 [ 216.132165] dma_alloc_attrs+0xf5/0x1b0 [ 216.132168] aq_ring_hwts_rx_alloc+0x150/0x1f0 [atlantic] [ 216.132193] aq_ptp_ring_alloc+0x1bb/0x540 [atlantic] [ 216.132213] aq_nic_init+0x4a1/0x760 [atlantic]

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-02-19 CVE Reserved
2024-04-02 CVE Published
2024-04-02 EPSS Updated
2024-12-19 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (7)

URL	Tag	Source
https://git.kernel.org/stable/c/94ad94558b0fbf18dd6fb0987540af1693157556	Vuln. Introduced

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/466ceebe48cbba3f4506f165fca7111f9eb8bb12	2024-02-16
https://git.kernel.org/stable/c/004fe5b7f59286a926a45e0cafc7870e9cdddd56	2024-02-16
https://git.kernel.org/stable/c/e42e334c645575be5432adee224975d4f536fdb1	2024-02-16
https://git.kernel.org/stable/c/2e7d3b67630dfd8f178c41fa2217aa00e79a5887	2024-02-03

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2024-26680	2024-11-12
https://bugzilla.redhat.com/show_bug.cgi?id=2272842	2024-11-12

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.5 < 6.1.78 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 6.1.78"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.5 < 6.6.17 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 6.6.17"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.5 < 6.7.5 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 6.7.5"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.5 < 6.8 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 6.8"		en		Affected