CVE-2023-52516

Source
https://nvd.nist.gov/vuln/detail/CVE-2023-52516
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52516.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2023-52516
Related
Published
2024-03-02T22:15:47Z
Modified
2024-09-18T03:24:32.169455Z
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved:

dma-debug: don't call _dmaentryalloccheckleak() under freeentries_lock

_dmaentryalloccheckleak() calls into printk -> serial console output (qcom geni) and grabs port->lock under freeentrieslock spin lock, which is a reverse locking dependency chain as qcomgeni IRQ handler can call into dma-debug code and grab freeentrieslock under port->lock.

Move _dmaentryalloccheckleak() call out of freeentries_lock scope so that we don't acquire serial console's port->lock under it.

Trimmed-down lockdep splat:

The existing dependency chain (in reverse order) is:

           -> #2 (free_entries_lock){-.-.}-{2:2}:
    _raw_spin_lock_irqsave+0x60/0x80
    dma_entry_alloc+0x38/0x110
    debug_dma_map_page+0x60/0xf8
    dma_map_page_attrs+0x1e0/0x230
    dma_map_single_attrs.constprop.0+0x6c/0xc8
    geni_se_rx_dma_prep+0x40/0xcc
    qcom_geni_serial_isr+0x310/0x510
    __handle_irq_event_percpu+0x110/0x244
    handle_irq_event_percpu+0x20/0x54
    handle_irq_event+0x50/0x88
    handle_fasteoi_irq+0xa4/0xcc
    handle_irq_desc+0x28/0x40
    generic_handle_domain_irq+0x24/0x30
    gic_handle_irq+0xc4/0x148
    do_interrupt_handler+0xa4/0xb0
    el1_interrupt+0x34/0x64
    el1h_64_irq_handler+0x18/0x24
    el1h_64_irq+0x64/0x68
    arch_local_irq_enable+0x4/0x8
    ____do_softirq+0x18/0x24
    ...

           -> #1 (&port_lock_key){-.-.}-{2:2}:
    _raw_spin_lock_irqsave+0x60/0x80
    qcom_geni_serial_console_write+0x184/0x1dc
    console_flush_all+0x344/0x454
    console_unlock+0x94/0xf0
    vprintk_emit+0x238/0x24c
    vprintk_default+0x3c/0x48
    vprintk+0xb4/0xbc
    _printk+0x68/0x90
    register_console+0x230/0x38c
    uart_add_one_port+0x338/0x494
    qcom_geni_serial_probe+0x390/0x424
    platform_probe+0x70/0xc0
    really_probe+0x148/0x280
    __driver_probe_device+0xfc/0x114
    driver_probe_device+0x44/0x100
    __device_attach_driver+0x64/0xdc
    bus_for_each_drv+0xb0/0xd8
    __device_attach+0xe4/0x140
    device_initial_probe+0x1c/0x28
    bus_probe_device+0x44/0xb0
    device_add+0x538/0x668
    of_device_add+0x44/0x50
    of_platform_device_create_pdata+0x94/0xc8
    of_platform_bus_create+0x270/0x304
    of_platform_populate+0xac/0xc4
    devm_of_platform_populate+0x60/0xac
    geni_se_probe+0x154/0x160
    platform_probe+0x70/0xc0
    ...

           -> #0 (console_owner){-...}-{0:0}:
    __lock_acquire+0xdf8/0x109c
    lock_acquire+0x234/0x284
    console_flush_all+0x330/0x454
    console_unlock+0x94/0xf0
    vprintk_emit+0x238/0x24c
    vprintk_default+0x3c/0x48
    vprintk+0xb4/0xbc
    _printk+0x68/0x90
    dma_entry_alloc+0xb4/0x110
    debug_dma_map_sg+0xdc/0x2f8
    __dma_map_sg_attrs+0xac/0xe4
    dma_map_sgtable+0x30/0x4c
    get_pages+0x1d4/0x1e4 [msm]
    msm_gem_pin_pages_locked+0x38/0xac [msm]
    msm_gem_pin_vma_locked+0x58/0x88 [msm]
    msm_ioctl_gem_submit+0xde4/0x13ac [msm]
    drm_ioctl_kernel+0xe0/0x15c
    drm_ioctl+0x2e8/0x3f4
    vfs_ioctl+0x30/0x50
    ...

Chain exists of: consoleowner --> &portlockkey --> freeentries_lock

Possible unsafe locking scenario:

    CPU0                    CPU1
    ----                    ----

lock(freeentrieslock); lock(&portlockkey); lock(freeentrieslock); lock(console_owner);

            *** DEADLOCK ***

Call trace: dumpbacktrace+0xb4/0xf0 showstack+0x20/0x30 dumpstacklvl+0x60/0x84 dumpstack+0x18/0x24 printcircularbug+0x1cc/0x234 checknoncircular+0x78/0xac _lockacquire+0xdf8/0x109c lockacquire+0x234/0x284 consoleflush_all+0x330/0x454 consol ---truncated---

References

Affected packages

Debian:11 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.10.205-1

Affected versions

5.*

5.10.46-4
5.10.46-5
5.10.70-1~bpo10+1
5.10.70-1
5.10.84-1
5.10.92-1~bpo10+1
5.10.92-1
5.10.92-2
5.10.103-1~bpo10+1
5.10.103-1
5.10.106-1
5.10.113-1
5.10.120-1~bpo10+1
5.10.120-1
5.10.127-1
5.10.127-2~bpo10+1
5.10.127-2
5.10.136-1
5.10.140-1
5.10.148-1
5.10.149-1
5.10.149-2
5.10.158-1
5.10.158-2
5.10.162-1
5.10.178-1
5.10.178-2
5.10.178-3
5.10.179-1
5.10.179-2
5.10.179-3
5.10.179-4
5.10.179-5
5.10.191-1
5.10.197-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:12 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.1.64-1

Affected versions

6.*

6.1.27-1
6.1.37-1
6.1.38-1
6.1.38-2~bpo11+1
6.1.38-2
6.1.38-3
6.1.38-4~bpo11+1
6.1.38-4
6.1.52-1
6.1.55-1~bpo11+1
6.1.55-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.5.6-1

Affected versions

6.*

6.1.27-1
6.1.37-1
6.1.38-1
6.1.38-2~bpo11+1
6.1.38-2
6.1.38-3
6.1.38-4~bpo11+1
6.1.38-4
6.1.52-1
6.1.55-1~bpo11+1
6.1.55-1
6.1.64-1
6.1.66-1
6.1.67-1
6.1.69-1~bpo11+1
6.1.69-1
6.1.76-1~bpo11+1
6.1.76-1
6.1.82-1
6.1.85-1
6.1.90-1~bpo11+1
6.1.90-1
6.1.94-1~bpo11+1
6.1.94-1
6.1.98-1
6.1.99-1
6.1.106-1
6.1.106-2
6.1.106-3
6.3.1-1~exp1
6.3.2-1~exp1
6.3.4-1~exp1
6.3.5-1~exp1
6.3.7-1~bpo12+1
6.3.7-1
6.3.11-1
6.4~rc6-1~exp1
6.4~rc7-1~exp1
6.4.1-1~exp1
6.4.4-1~bpo12+1
6.4.4-1
6.4.4-2
6.4.4-3~bpo12+1
6.4.4-3
6.4.11-1
6.4.13-1
6.5~rc4-1~exp1
6.5~rc6-1~exp1
6.5~rc7-1~exp1
6.5.1-1~exp1
6.5.3-1~bpo12+1
6.5.3-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}